U.S. Department of Transportation
Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
This report is an archived publication and may contain dated technical, contact, and link information 

Publication Number: FHWARD07052 Date: September 2007 
This chapter contains the primary information needed to complete the testing of individual samples for the LTPP program. The tables on the following pages provide a list of the protocols included in this chapter and the expected number of tests per layer for each protocol by experiment type. These target levels of testing were not always achieved.
Details of the laboratory material testing program for basic GPS work are provided in Tables 4.1 to 4.6. These tables provide the layer type, test designation, LTPP protocol, and number of tests per layer.
The expected SPS testing for each material are presented by experiment in Tables 4.7 to 4.22. For the experiments involving rehabilitation, there were two rounds of testing performed and these are presented in two separate tablesone for preconstruction and one for postconstruction. For the SPS9A projects, the laboratory testing program was fairly involved. The required tests for these projects are presented across seven tables based on the layers involved and the types of samples being collected.
The MAP provided new target levels for the amount of testing required for some of the tests. The MAP testing program summary is provided in Table 4.23. Initially, the plan identified several new tests to be completed, including the Direct Tension Test, Bending Beam Rheometer (BBR) testing, and Dynamic Shear Test on asphalt cement; petrographic examination of hardened concrete on the PCC layers; and specific gravity and Dynamic Cone Penetrometer (DCP) testing on the unbound materials. Due to budget limitations, only the specific gravity and DCP testing of unbound materials were pursued for additional testing. However, the protocols developed for all of these tests were included in this chapter for informational purposes.
After these tables, the protocols required for laboratory testing are provided. Most of the protocols were modifications of existing AASHTO and ASTM standards. The protocols provided specific directions for performing the tests when the tests were done for the LTPP program. In a few instances, neither AASHTO nor ASTM provided a suitable procedure and therefore a "stand alone" protocol was developed (for example, P01). The protocol and the corresponding AASHTO or ASTM procedure (if applicable) were to be rigorously followed when testing was to be performed for the LTPP program. The protocols are presented in numerical order with the laboratory test data sheets provided directly behind each respective protocol.
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  16 
AC02. Bulk Specific Gravity  P02  2 
AC03. Maximum Specific Gravity  P03  2 
AC04. Asphalt Content (Extraction)  P04  2 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  2 
b. Extracted Aggregate  
AG04. Gradation of Aggregate  P14  2 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  2 
II. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  2 
UG02. Sieve Analysis (Washed)  P41  2 
UG04. Atterberg Limits  P43  2 
UG05. MoistureDensity Relations  P44  2 
UG07. Resilient Modulus  P46  2 
UG08. Classification  P47  2 
UG10. Natural Moisture Content  P49  5 
III. Subgrade  
SS01. Sieve Analysis  P51  2 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  2 
SS03. Atterberg Limits  P43  2 
SS04. Classification/Type of Subgrade Soils  P52  2 
SS05. MoistureDensity Relations  P44  2 
SS07. Resilient Modulus (at in situ density, moisture)  P46  2 
SS09. Natural Moisture Content  P49  5 
Definitions:
NAA  National Aggregate Association
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  16 
AC02. Bulk Specific Gravity  P02  2 
AC03. Maximum Specific Gravity  P03  2 
AC04. Asphalt Content (Extraction)  P04  2 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  2 
b. Extracted Aggregate  
AG04. Gradation of Aggregate  P14  2 
AG05. NAA Test for Fine Aggregate Particle Shape.  P14A  2 
II. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Type of Treatment  P31  2 
TB02. Compressive Strength  P32  2 
III. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  2 
UG02. Sieve Analysis (Washed)  P41  2 
UG04. Atterberg Limits  P43  2 
UG05. MoistureDensity Relations  P44  2 
UG07. Resilient Modulus (at in situ density, moisture)  P46  2 
UG08. Classification  P47  2 
UG10. Natural Moisture Content  P49  5 
IV. Subgrade  
SS01. Sieve Analysis  P51  2 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  2 
SS03. Atterberg Limits  P43  2 
SS04. Classification/Type of Subgrade Soils  P52  2 
SS05. MoistureDensity Relations  P44  2 
SS07. Resilient Modulus (at in situ density, moisture)  P46  2 
SS09. Natural Moisture Content  P49  5 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Portland Cement Concrete  
PC01. Compressive Strength of InPlace Concrete  P61  2 
PC02. Splitting Tensile Strength  P62  2 
PC04. Static Modulus of InPlace Concrete  P64  2 
PC06. Visual Examination and Length Measurement of Cores  P66  14 
II. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Type of Treatment  P31  2 
TB02. Compressive Strength  P32  2 
III. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  2 
UG02. Sieve Analysis (Washed)  P41  2 
UG04. Atterberg Limits  P43  2 
UG05. MoistureDensity Relations  P44  2 
UG07. Resilient Modulus (at in situ density, moisture)  P46  2 
UG08. Classification  P47  2 
UG09. Natural Moisture Content  P49  5 
IV. Subgrade  
SS01. Sieve Analysis  P51  2 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  2 
SS03. Atterberg Limits  P43  2 
SS04. Classification/Type of Subgrade Soils  P52  2 
SS05. MoistureDensity Relations  P44  2 
SS07. Resilient Modulus (at in situ density, moisture)  P46  2 
SS09. Natural Moisture Content  P49  5 
Definitions:
JPCP  Jointed Plain Concrete Pavement
JRCP  Jointed Reinforced Concrete Pavement
CRCP  Continuously Reinforced Concrete Pavement
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  16 
AC02. Bulk Specific Gravity  P02  2 
AC03. Maximum Specific Gravity  P03  2 
AC04. Asphalt Content (Extraction)  P04  2 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  2 
b. Extracted Aggregate  
AG04. Gradation of Aggregate  P14  2 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  2 
II. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Type of Treatment  P31  2 
TB02. Compressive Strength  P32  2 
III. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  2 
UG02. Sieve Analysis (Washed)  P41  2 
UG04. Atterberg Limits  P43  2 
UG05. MoistureDensity Relations  P44  2 
UG07. Resilient Modulus (at in situ density, moisture)  P46  2 
UG08. Classification  P47  2 
UG10. Natural Moisture Content  P49  5 
IV. Subgrade  
SS01. Sieve Analysis  P51  2 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  2 
SS03. Atterberg Limits  P43  2 
SS04. Classification/Type of Subgrade Soils  P52  2 
SS05. MoistureDensity Relations  P44  2 
SS07. Resilient Modulus (at in situ density, moisture)  P46  2 
SS09. Natural Moisture Content  P49  5 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  16 
AC02. Bulk Specific Gravity  P02  2 
AC03. Maximum Specific Gravity  P03  2 
AC04. Asphalt Content (Extraction)  P04  2 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  2 
b. Extracted Aggregate  
AG04. Gradation of Aggregate  P14  2 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  2 
II. Portland Cement Concrete  
PC01. Compressive Strength of InPlace Concrete  P61  2 
PC02. Splitting Tensile Strength  P62  2 
PC04. Static Modulus of InPlace Concrete  P64  2 
PC06. Visual Examination and Length Measurement of Cores  P66  14 
III. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Type of Treatment  P31  2 
TB02. Compressive Strength  P32  2 
IV. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  2 
UG02. Sieve Analysis (Washed)  P41  2 
UG04. Atterberg Limits  P43  2 
UG05. MoistureDensity Relations  P44  2 
UG07. Resilient Modulus (at in situ density, moisture)  P46  2 
UG08. Classification  P47  2 
UG10. Natural Moisture Content  P49  5 
V. Subgrade  
SS01. Sieve Analysis  P51  2 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  2 
SS03. Atterberg Limits  P43  2 
SS04. Classification/Type of Subgrade Soils  P52  2 
SS05. MoistureDensity Relations  P44  2 
SS07. Resilient Modulus (at in situ density, moisture)  P46  2 
SS09. Natural Moisture Content  P49  5 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Portland Cement Concrete  
PC01. Compressive Strength of InPlace Concrete  P61  2 
PC02. Splitting Tensile Strength  P62  2 
PC04. Static Modulus of InPlace Concrete  P64  2 
PC06. Visual Examination and Length Measurement of Cores  P66  14 
II. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Type of Treatment  P31  2 
TB02. Compressive Strength  P32  2 
III. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  2 
UG02. Sieve Analysis (Washed)  P41  2 
UG04. Atterberg Limits  P43  2 
UG05. MoistureDensity Relations  P44  2 
UG07. Resilient Modulus (at in situ density, moisture)  P46  2 
UG08. Classification  P47  2 
UG10. Natural Moisture Content  P49  5 
IV. Subgrade  
SS01. Sieve Analysis  P51  2 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  2 
SS03. Atterberg Limits  P43  2 
SS04. Classification/Type of Subgrade Soils  P52  2 
SS05. MoistureDensity Relations  P44  2 
SS07. Resilient Modulus (at in situ density, moisture)  P46  2 
SS09. Natural Moisture Content  P49  5 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  60 
AC02. Bulk Specific Gravity  P02  60 
AC03. Maximum Specific Gravity  P03  3 
AC04. Asphalt Content (Extraction)  P04  3 
AC05. Moisture Susceptibility  P05  3 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  18 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 
AG02. Specific Gravity of Fine Aggregate  P12  3 
AG04. Gradation of Aggregate  P14  3 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 
c. Recovered Asphalt Cement  
AE01. Abson Recovery  P21  3 
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
d. Asphalt Cement from Tanker  
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
II. Asphalt Treated Base  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  34 
AC02. Bulk Specific Gravity  P02  34 
AC03. Maximum Specific Gravity  P03  3 
AC04. Asphalt Content (Extraction)  P04  3 
AC05. Moisture Susceptibility  P05  3 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  9 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 
AG02. Specific Gravity of Fine Aggregate  P12  3 
AG04. Gradation of Aggregate  P14  3 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 
c. Recovered Asphalt Cement  
AE01. Abson Recovery  P21  3 
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
d. Asphalt Cement from Tanker  
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
III. Permeable Asphalt Treated Base  
AC04. Asphalt Content (Extraction)  P04  3 
AG04. Gradation of Extracted Aggregate  P14  3 
IV. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  3 
UG02. Sieve Analysis (washed)  P41  3 
UG04. Atterberg Limits  P43  3 
UG05. MoistureDensity Relations  P44  3 
UG07. Resilient Modulus (at in situ density, moisture)  P46  3 
UG08. Classification  P47  3 
UG09. Permeability  P48  3 
UG10. Natural Moisture Content  P49  3 
V. Subgrade  
SS01. Sieve Analysis  P51  6 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  6 
SS03. Atterberg Limits  P43  6 
SS04. Classification  P52  6 
SS05. MoistureDensity Relations  P55  6 
SS07. Resilient Modulus (at in situ density, moisture)  P46  6 
SS08. Unit Weight  P56  6 
SS09. Natural Moisture Content  P49  6 
SS10. Unconfined Compressive Strength (if thinwalled tube was available)  P54  6 
SS11. Permeability (if thinwall tube was available)  P57  3 
UG09. Permeability (if thinwall tube was not available)  P48  6 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Portland Cement Concrete  
PC01. Compressive Strength  P61  
14 day  550 psi (3.8 MPa) PCC, cylinders molded from fresh PCC  3  
14 day  550 psi (3.8 MPa) PCC, cores  6  
14 day  900 psi (6.2 MPa) PCC, cylinders molded from fresh PCC  3  
14 day  900 psi (6.2 MPa) PCC, cores  6  
28 day  550 psi (3.8 MPa) PCC, cylinders molded from fresh PCC  3  
28 day  550 psi (3.8 MPa) PCC, cores  6  
28 day  900 psi (6.2 MPa) PCC, cylinders molded from fresh PCC  3  
28 day  900 psi (6.2 MPa) PCC, cores  6  
1 year  550 psi (3.8 MPa) PCC, cylinders molded from fresh PCC  3  
1 year  550 psi (3.8 MPa) PCC, cores  6  
1 year  900 psi (6.2 MPa) PCC, cylinders molded from fresh PCC  3  
1 year  900 psi (6.2 MPa) PCC, cores  6  
PC02. Splitting Tensile Strength  P62  
14 day  550 psi (3.8 MPa) PCC, cylinders molded from fresh PCC  3  
14 day  550 psi (3.8 MPa) PCC, cores  6  
14 day  900 psi (6.2 MPa) PCC, cylinders molded from fresh PCC  3  
14 day  900 psi (6.2 MPa) PCC, cores  6  
28 day  550 psi (3.8 MPa) PCC, cylinders molded from fresh PCC  3  
28 day  550 psi (3.8 MPa) PCC, cores  6  
28 day  900 psi (6.2 MPa) PCC, cylinders molded from fresh PCC  3  
28 day  900 psi (6.2 MPa) PCC, cores  6  
1 year  550 psi (3.8 MPa) PCC, cylinders molded from fresh PCC  3  
1 year  550 psi (3.8 MPa) PCC, cores  6  
1 year  900 psi (6.2 MPa) PCC, cylinders molded from fresh PCC  3  
1 year  900 psi (6.2 MPa) PCC, cores  6  
PC03. Coefficient of Thermal Expansion  P63  6 
PC04. Static Modulus of Elasticity  P64  
28 day  550 psi (3.8 MPa) PCC  6  
28 day  900 psi (6.2 MPa) PCC  6  
1 year  550 psi (3.8 MPa) PCC  6  
1 year  900 psi (6.2 MPa) PCC  6  
PC05. PCC Unit Weight  P65  12 
PC06. Visual Examination and Length Measurement of Cores  P66  99 
PC08. Air Content  P68  2 
II. Lean Concrete Base  
PC01. Compressive Strength  P61  
7 day, cylinders molded from fresh PCC  4  
14 day, cores  8  
28 day, cylinders molded from fresh PCC  4  
28 day, cores  8  
1 year, cylinders molded from fresh PCC  4  
1 year, cores  8  
PC06. Visual Examination and Length Measurement of Cores  P66  24 
III. Permeable Asphalt Treated Base  
AC04. Asphalt Content (Extraction)  P04  3 
AG04. Gradation of Extracted Aggregate  P14  3 
IV. Unbound Granular Base  
UG01. Particle Size Analysis  P41  3 
UG02. Sieve Analysis (washed)  P41  3 
UG04. Atterberg Limits  P43  3 
UG05. MoistureDensity Relations  P44  3 
UG07. Resilient Modulus (at in situ density, moisture)  P46  3 
UG08. Classification  P47  3 
UG09. Permeability  P48  3 
UG10. Natural Moisture Content  P49  3 
V. Subgrade  
SS01. Sieve Analysis  P51  6 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  6 
SS03. Atterberg Limits  P43  6 
SS04. Classification  P52  6 
SS05. MoistureDensity Relations  P55  6 
SS07. Resilient Modulus (at in situ density, moisture)  P46  6 
SS08. Unit Weight (if thinwalled tube is available)  P56  6 
SS09. Natural Moisture Content  P49  6 
SS10. Unconfined Compressive Strength (if thinwalled tube is available)  P54  6 
SS11. Permeability (if thinwall tube is available)  P57  3 
UG09. Permeability (if thinwall tube is not available)  P48  6 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  26 
AC02. Bulk Specific Gravity  P02  9 
AC03. Maximum Specific Gravity  P03  3 
AC04. Asphalt Content (Extraction)  P04  3 
AC07. Creep Compliance, Resilient Modulus, Indirect Tensile Strength  P07  3 
AC08. Field Moisture Damage  P08  3 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 
AG02. Specific Gravity of Fine Aggregate  P12  3 
AG04. Gradation of Aggregate  P14  3 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 
c. Asphalt Cement  
AE01. Abson Recovery  P21  3 
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
II. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Treatment  P31  3 
TB02. Compressive Strength  P32  3 
III. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  3 
UG02. Sieve Analysis (washed)  P41  3 
UG04. Atterberg Limits  P43  3 
UG05. MoistureDensity Relations  P44  3 
UG07. Resilient Modulus (at in situ density, moisture)  P46  3 
UG08. Classification  P47  3 
UG09. Permeability  P48  3 
UG10. Natural Moisture Content  P49  3 
IV. Subgrade  
SS01. Sieve Analysis  P51  3 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  3 
SS03. Atterberg Limits  P43  3 
SS04. Classification  P52  3 
SS05. MoistureDensity Relations  P55  3 
SS07. Resilient Modulus (at in situ density, moisture)  P46  3 
SS08. Unit Weight  P56  3 
SS09. Natural Moisture Content  P49  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  40 
AC02. Bulk Specific Gravity  P02  40 
AC03. Maximum Specific Gravity  P03  6 
AC04. Asphalt Content (Extraction)  P04  6 
AC05. Moisture Susceptibility  P05  6 
AC07. Creep Compliance, Resilient Modulus, Indirect Tensile Strength  P07  6 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 
AG02. Specific Gravity of Fine Aggregate  P12  3 
AG04. Gradation of Aggregate  P14  3 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 
c. Asphalt Cement  
AE01. Abson Recovery  P21  3 
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Portland Cement Concrete  
PC01. Compressive Strength  P61  10 
PC02. Splitting Tensile Strength  P62  10 
PC03. PCC Coefficient of Thermal Expansion  P63  3 
PC04. Static Modulus of Elasticity  P64  6 
PC05. PCC Unit Weight  P65  10 
PC06. Visual Examination and Length Measurement of Cores  P66  23 
II. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Treatment  P31  3 
TB02. Compressive Strength  P32  3 
III. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  3 
UG02. Sieve Analysis (washed)  P41  3 
UG04. Atterberg Limits  P43  3 
UG05. MoistureDensity Relations  P44  3 
UG07. Resilient Modulus (at in situ density, moisture)  P46  3 
UG08. Classification  P47  3 
UG09. Permeability  P48  3 
UG10. Natural Moisture Content  P49  3 
IV. Subgrade  
SS01. Sieve Analysis  P51  3 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  3 
SS03. Atterberg Limits  P43  3 
SS04. Classification  P52  6 
SS05. MoistureDensity Relations  P55  3 
SS07. Resilient Modulus (at in situ density, moisture)  P46  3 
SS08. Unit Weight  P56  6 
SS09. Natural Moisture Content  P49  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  20 
AC02. Bulk Specific Gravity  P02  20 
AC03. Maximum Specific Gravity  P03  3 
AC04. Asphalt Content (Extraction)  P04  3 
AC05. Moisture Susceptibility  P05  3 
AC07. Creep Compliance, Resilient Modulus, Indirect Tensile Strength  P07  3 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 
AG02. Specific Gravity of Fine Aggregate  P12  3 
AG04. Gradation of Aggregate  P14  3 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 
c. Asphalt Cement  
AE01. Abson Recovery  P21  3 
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Bound (Treated) Base and Subbase  
TB01. Type and Classification of Material and Treatment  P31  3 
TB02. Compressive Strength  P32  3 
II. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  3 
UG02. Sieve Analysis (washed)  P41  3 
UG04. Atterberg Limits  P43  3 
UG05. MoistureDensity Relations  P44  3 
UG07. Resilient Modulus (at in situ density, moisture)  P46  3 
UG08. Classification  P47  3 
UG09. Permeability  P48  3 
UG10. Natural Moisture Content  P49  3 
III. Subgrade  
SS01. Sieve Analysis  P51  3 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  3 
SS03. Atterberg Limits  P43  3 
SS04. Classification  P52  6 
SS05. MoistureDensity Relations  P55  3 
SS07. Resilient Modulus (at in situ density, moisture)  P46  3 
SS08. Unit Weight  P56  6 
SS09. Natural Moisture Content  P49  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Portland Cement Concrete Overlay  
PC01. Compressive Strength  P61  
14day, cylinders molded from fresh PCC  6  
14day, cores  4  
28day, cylinders molded from fresh PCC  6  
28day, cores  4  
1year, cylinders molded from fresh PCC  6  
1year, cores  4  
PC02. Splitting Tensile Strength  P62  
14day, cylinders molded from fresh PCC  6  
14day, cores  4  
28day, cylinders molded from fresh PCC  6  
28day, cores  4  
1year, cylinders molded from fresh PCC  6  
1year, cores  4  
PC03. PCC Coefficient of Thermal Expansion  P63  1 
PC04. Static Modulus of Elasticity  P64  
28day, cores  4  
1year, cores  4  
PC05. PCC Unit Weight  P65  
14day, cores  4  
28day, cores  4  
1year, cores  4  
PC06. Visual Examination and Length Measurement  P66  99 
PC07. Interface Bond Strength  P67  
28day  32  
1year  32  
PC08. Air Content  P68  
14day  2  
PC09. Flexural Strength  P69  
14day, cylinders molded from fresh PCC  6  
28day, cylinders molded from fresh PCC  6  
1year, cylinders molded from fresh PCC  6  
II. Portland Cement Concrete Original Pavement  
PC01. Compressive Strength  P61  9 
PC02. Splitting Tensile Strength  P62  9 
PC03. PCC Coefficient of Thermal Expansion  P63  1 
PC04. Static Modulus of Elasticity  P64  9 
PC05. PCC Unit Weight  P65  9 
PC06. Visual Examination and Length Measurement  P66  47 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  16 
AC02. Bulk Specific Gravity  P02  16 
AC03. Maximum Specific Gravity  P03  3 
AC04. Asphalt Content (Extraction)  P04  3 
AC05. Moisture Susceptibility  P05  3 
AC07. Creep Compliance, Resilient Modulus, Indirect Tensile Strength  P07  3 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 
AG02. Specific Gravity of Fine Aggregate  P12  3 
AG04. Gradation of Aggregate  P14  3 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 
c. Asphalt Cement (Recovered from Mix)  
AE01. Abson Recovery  P21  3 
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
d. Asphalt Cement (From Tanker)  
AE02. Penetration at 77°F (25°C), 115°F (46°C)  P22  3 
AE03. Specific Gravity at 60°F (16°C)  P23  3 
AE05. Viscosity at 140°F (60°C), 275°F (135°C)  P25  3 
II. Portland Cement Concrete  
PC01. Compressive Strength  P61  
14day, cylinders molded from fresh PCC  3  
14day, cores  3  
28day, cylinders molded from fresh PCC  3  
28day, cores  3  
1year, cylinders molded from fresh PCC  3  
1year, cores  3  
PC02. Splitting Tensile Strength  P62  
14day, cylinders molded from fresh PCC  3  
14day, cores  3  
28day, cylinders molded from fresh PCC  3  
28day, cores  3  
1year, cylinders molded from fresh PCC  3  
1year, cores  3  
PC03. PCC Coefficient of Thermal Expansion  P63  1 
PC04. Static Modulus of Elasticity  P64  
28day  3  
1year  3  
PC05. PCC Unit Weight  P65  9 
PC08. Air Content, 28day  P68  1 
PC09. Flexural Strength  P69  
14day  3  
28day  3  
1year  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Layer 

New/ReConstruction  
I. Bound (Treated) Base and Subbase  
AC01. Core Examination and Thickness  P01  6 
II. Unbound Granular Base and Subbase  
UG01. Particle Size Analysis  P41  3 
UG02. Sieve Analysis (washed)  P41  3 
UG04. Atterberg Limits  P43  3 
UG08. Classification  P47  3 
III. Subgrade  
SS01. Sieve Analysis  P51  3 
SS03. Atterberg Limits  P43  3 
SS04. Classification  P52  3 
SS09. Natural Moisture Content  P49  3 
Existing Pavement (Overlay Construction)  
I. Existing Surface Layers  
AC01/PC06. Core Examination and Thickness  P01/P66  6 
II. Base/Subbase  
Field Classification of Unbound Base  Field Guide  3 
AC01. Core Examination and Thickness (Bound Base)  P01  6 
III. Subgrade  
SS01. Sieve Analysis  P51  3 
SS03. Atterberg Limits  P43  3 
SS04. Classification  P52  3 
SS09. Natural Moisture Content  P49  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Unique Material 

I. Aggregate Tests  
AG04. Aggregate Gradation  P14  1 
AG01. Specific Gravity of Coarse Aggregate  P11  1 
AG02. Specific Gravity of Fine Aggregate  P12  1 
Specific Gravity of  No. 200 (0.075 mm) Material  AASHTO T100  1 
Coarse Aggregate Angularity  Penn DOT TM 621  1 
Fine Aggregate Angularity  ASTM C1252  1 
Toughness  AASHTO T96  1 
Soundness  AASHTO T104  1 
Deleterious Materials  AASHTO T112  1 
Clay Content  AASHTO T176  1 
Thin, Elongated Particles  ASTM D4791  1 
II. Asphalt Cement  
Penetration at 41°F (5°C)  AASHTO T49  1 
AE02. Penetration at 77°F (25°C) and 115°F (46°C)  P22  1 
AE05. Viscosity at 140°F (60°C) and 275°F (135°C)  P25  2 
AE03. Specific Gravity at 60°F (16°C)  P23  2 
Dynamic Shear at 3 temperatures  AASHTO TP5  2 
Brookfield Viscosity at 135°C (275°F) and 165°C (329°F)  ASTM D4402  1 
Rolling Thin Film Oven (RTFOT)  AASHTO T240  a 
Dynamic Shear on RTFOT Residue at 3 temperatures  AASHTO TP5  3 
Pressure Aging (PAV) of RTFOT residue  AASHTO PP1  a 
Creep Stiffness of RTFOTPAV residue at 2 temperatures  24 hour conditioning  AASHTO TP1  2 
Creep Stiffness of RTFOTPAV residue at 2 temperatures  AASHTO TP1  2 
Dynamic Shear on RTFOTPAV residue at 3 temperatures  AASHTO TP5  2 
Direct Tension on RTFOTPAV residue at 2 temperatures  AASHTO TP3  2 
Notes:
a Sufficient material should be conditioned for the required tests.
Material Type, Test Designation  LTPP Protocol  Tests Per Section 

Gyratory Compaction at design asphalt content at N_{max}  AASHTO M002  3 
Gyratory Compaction at 7% Air Voids  AASHTO M002  6 
AC02. Bulk Specific Gravity  P02  3 
AC03. Maximum Specific Gravity  P03  1 
AC05. Moisture Susceptibility  P05  1 test requiring 6 lab samples 
Volume Percent of Air Voids  AASHTO PP19  3 
Percent Voids in Mineral Aggregate  AASHTO PP19  3 
Voids Filled with Asphalt  AASHTO PP19  3 
Material Type, Test Designation  LTPP Protocol  Tests Per Section 

Gyratory Compaction at N_{max}  AASHTO M002  6 
AC02. Bulk Specific Gravity  P02  6 
AC03. Maximum Specific Gravity  P03  2 
AC04. Asphalt Content (Extraction)  P04  2 
AG04. Gradation of Extracted Aggregate  P14  2 
Volume Percent of Air Voids  AASHTO PP19  6 
Percent Voids in Mineral Aggregate  AASHTO PP19  6 
Voids Filled with Asphalt  AASHTO PP19  6 
Material Type, Test Designation  LTPP Protocol  Number of Tests^{a} 

Gyratory Compaction at N_{max}  AASHTO M002  6 lab mixed samples 
Gyratory Compaction at 3% Air Voids  AASHTO M002  2 lab mixed samples 
Gyratory Compaction at 7% Air Voids  AASHTO M002  32 lab mixed samples 
Gyratory Compaction at N_{max}  AASHTO M002  6 field samples 
Gyratory Compaction at 3% Air Voids  AASHTO M002  2 field samples 
Gyratory Compaction at 7% Air Voids  AASHTO M002  26 field samples 
AC02. Bulk Specific Gravity  P02  9 lab samples9 field samples 
AC03. Maximum Specific Gravity  P03  1 lab sample2 field samples 
AC04. Asphalt Content (Extraction)  P04  6 field samples 
AC05. Moisture Susceptibility  P05  1 test from 6 lab samples 
AG04. Gradation of Extracted Aggregate  P14  2 field samples 
Volume Percent of Air Voids  AASHTO PP19  6 
Percent Voids in Mineral Aggregate  AASHTO PP19  6 
Voids Filled with Asphalt  AASHTO PP19  6 
AC07. Creep Compliance, Resilient Modulus and Indirect Tensile Strength  P07  1 set lab samples 1 set field samples 
Frequency Sweep at Constant Height and Simple Shear at Constant Height  AASHTO M003, P005  3 lab samples 3 field samples 
Volumetric Test and Uniaxial Strain  AASHTO M003, P005  3 lab samples 3 field samples 
Repeated Shear at Constant Stress Ratio  AASHTO M003, P005  2 lab samples 2 field samples 
Indirect Tensile Creep Compliance and Indirect Tensile Strength  AASHTO M005  9 lab samples9 field samples 
Notes:
a Lab samples were obtained by mixing aggregate stockpile samples with the asphalt cement in accordance with the mix design. Field samples were obtained from bulk samples of the asphalt concrete.
Material Type, Test Designation  LTPP Protocol  Tests Per Section 

AC01. Core Examination and Thickness  P01  8 
AC02. Bulk Specific Gravity  P02  8 
AC04. Asphalt Content (Extraction)  P04  8 
AG04. Gradation of Extracted Aggregate  P14  2 
Volume Percent of Air Voids  AASHTO PP19  2 
Volume Percent of Voids in Mineral Aggregate  AASHTO PP19  2 
Voids Filled with Asphalt  AASHTO PP19  2 
AE01. Abson Recovery  P21  8 
Penetration at 41°F (5°C)  AASHTO T49  1 
AE02. Penetration at 77°F (25°C) and 115°F (46°C)  P22  1 
AE03. Specific Gravity at 60°F (16°C)  P23  2 
AE05. Viscosity at 140°F (60°C) and 275°F (135°C)  P25  2 
Dynamic Shear at 3 temperatures  AASHTO TP5  2 
Creep Stiffness at 2 temperatures  AASHTO TP1  2 
Direct Tension at 2 temperatures  AASHTO TP3  2 
Notes:
t = A at time 0, immediately after construction
t = B at 6 months after construction
t = C at 12 months after construction
t = D at 18 months after construction
t = E at 24 months after construction
t = F at 48 months after construction
Material Type, Test Designation  LTPP Protocol  Number of Tests 

AC01. Core Examination and Thickness  P01  8 
AC02. Bulk Specific Gravity  P02  8 
AC03. Maximum Specific Gravity  P03  2 
AC04. Asphalt Content (Extraction)  P04  8 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  1 
AG04. Gradation of Extracted Aggregate  P14  2 
Volume Percent of Air Voids  AASHTO PP19  2 
Percent Voids in Mineral Aggregate  AASHTO PP19  2 
Voids Filled with Asphalt  AASHTO PP19  2 
AE01. Abson Recovery  P21  8 
Penetration at 41°F (5°C)  AASHTO T49  1 
AE02. Penetration at 77°F (25°C) and 115°F (46°C)  P22  1 
AE03. Specific Gravity at 60°F (16°C)  P23  2 
AE05. Viscosity at 140°F (60°C) and 275°F (135°C)  P25  2 
Dynamic Shear at 3 temperatures  AASHTO TP5  2 
Creep Stiffness at 2 temperatures  AASHTO TP1  2 
Direct Tension at 2 temperatures  AASHTO TP3  2 
Frequency Sweep at Constant Height and Simple Shear at Constant Height  AASHTO M003, P005  2 
Volumetric Test and Uniaxial Strain  AASHTO M003, P005  2 
Repeated Shear at Constant Stress Ratio  AASHTO M003, P005  2 
Indirect Tensile Creep Compliance and Indirect Tensile Strength  AASHTO M05, M005  10 
Material Type, Test Designation  LTPP Protocol  Tests per Layer 

I. Asphalt Concrete  
a. Asphaltic Concrete  
AC01. Core Examination and Thickness  P01  3 per Section 
AC02. Bulk Specific Gravity  P02  3 per Section 
AC03. Maximum Specific Gravity  P03  3 per Project 
AC04. Asphalt Content (Extraction)  P04  3 per Project 
AC07. Creep Compliance, Resilient Modulus, and Indirect Tensile Strength  P07  3 per Project 
b. Extracted Aggregate  
AG01. Specific Gravity of Coarse Aggregate  P11  3 per Project 
AG02. Specific Gravity of Fine Aggregate  P12  3 per Project 
AG04. Gradation of Aggregate  P14  3 per Project 
AG05. NAA Test for Fine Aggregate Particle Shape  P14A  3 per Project 
c. Asphalt Cement  
AE03. Specific Gravity at 60°F (16°C)  P23  3 per Project 
AE05. Viscosity at 140°F (60°C) and 275°F (135°C)  P25  3 per Project 
II. Portland Cement Concrete  
PC01. Compressive Strength (aging test)  P61  3 per Project 
PC02. Splitting Tensile Strength (aging test)  P62  3 per Project 
PC03. PCC Coefficient of Thermal Expansion  P63  2 per Project 
PC04. Static Modulus of Elasticity (aging test)  P64  3 per Project 
PC06. Core Examination and Thickness  P66  3 per Section 
PC08. Air Content  P68  3 per Project 
III. Treated Base and Subbase  
TB01. Type and Classification of Material and Treatment  P31  3 per Project 
IV. Unbound Granular Base and Subbase  
UG01/UG02. Sieve Analysis  P41  3 per Project 
UG04. Atterberg Limits  P43  3 per Project 
UG07. Resilient Modulus (at in situ density, moisture)  P46  3 per Project 
UG13. Specific Gravity  P70  3 per Project 
UG14. Dynamic Cone Penetrometer  P72  3 per Project 
V. Subgrade Soils  
SS01. Sieve Analysis  P51  3 per Project 
SS02. Hydrometer to 0.001 mm (0.04 mils)  P42  3 per Project 
SS03. Atterberg Limits  P43  3 per Project 
SS07. Resilient Modulus (at in situe density, moisture)  P46  3 per Project 
SS13. Specific Gravity  P70  3 per Project 
SS14. Dynamic Cone Penetrometer  P72  3 per Project 
All protocols were to be adhered to as standard procedures for the laboratory material testing work. Results from laboratory tests were reported on standard LTPP test forms as provided with each protocol. The pertinent test form number was indicated in the REPORT section of each protocol. In addition, space for comment codes also was included as the second to last item in the REPORT section of each protocol.
The following entries were made on each of the forms in this section: Sheet, Laboratory Performing Test, Laboratory Identification Code, Region, State, Experiment Number, State Code, SHRP ID, Field Set Number, Sampled by, Date Sampled, LTPP Test Designation, LTPP Protocol, Layer Number, Sampling Area No., Laboratory Test Number, Location Number, LTPP Sample Number, Submitted by, Date, Checked and Approved, and Date.
SHEET: All data sheets from the laboratory material testing work on a particular project or test section were assigned sequential numbers starting from 1 for the sample receipt report (Form L01) followed by the sample inspection report (Form L02), preliminary laboratory test assignment (Form L03), laboratory test assignments (Form L04) and so on in increasing order through all of the respective Ltype laboratory testing forms and continuing through the Ttype laboratory testing forms.
If the information could not be completely filled out on one sheet for one type of sample/test then multiple sheets were used and numbered accordingly ... 1 of 30, 2 of 30, 3 of 30 ....
LABORATORY PERFORMING TEST: The name of the laboratory where the laboratory materials test was conducted was written on this line.
LTPP LABORATORY IDENTIFICATION CODE: The laboratory identification code number assigned to the laboratory performing the test was recorded. The first two digits of the code indicate the state in which the laboratory was operating.
REGION: Identifies the LTPP region in which the project or test section was located:
NA = North Atlantic Region
NC = North Central Region
S = Southern Region
W = Western Region
STATE: Two letter abbreviation (shown in Table 3.2) of the state, District of Columbia, Puerto Rico or the Canadian Province in which the project or test section was located.
EXPERIMENT NO: One of the eight GPS experiments (GPS1, GPS2, GPS3, GPS4, GPS5, GPS6, GPS7, or GPS9) or one of the seven SPS experiments (SPS1, SPS2, SPS5, SPS6, SPS7, SPS8 or SPS9) as shown in Table 3.3 of this Guide.
STATE CODE: Twodigit code as shown in Table 3.2 for the state in which the project or test section was located.
SHRP ID: The fourdigit code identifying the specific LTPP test section within the state.
FIELD SET NO: The field set number was a sequentially assigned number to indicate the different time periods in which material samples and field testing were conducted on the project. These time periods usually referred to different stages in the pavement life, such as prior to overlay construction, after overlay construction, end of test, etc. A field set number could have applied to more than one day since sampling of SPS test sections usually required more than one day. As a general rule, the same field set number was applied to all material samples and field tests conducted in a continuous 30day period, unless a construction event occurred between the two sampling sessions. The number "1" was entered to indicate the first time that material sampling and field testing were conducted on the project.
SAMPLED BY: This was used to identify the Drilling and Sampling Crew who performed the field material sampling and field testing work for this particular project or test section.
DATE (OR DATE SAMPLED): All dates were recorded as mmddyyyy. This date was the date on which the field material sampling and field testing was conducted.
LAYER NUMBER: This item represents the pavement layer number which was assigned by the Participating Laboratory and recorded on Forms L054, L05A, L05B, T01B through T72. This information was based on Field Operations Information Form 2 included in the Field Data Packet received from the Drilling and Sampling Crew, observations of samples in the laboratory packet, inventory data and approval by the Region.
SAMPLING AREA NO: The sampling area number was a twodigit number used to reference all of the samples taken from one area of an SPS project. It has the form SA##. This number was specified in the materials sampling plan for the project as developed by the LTPP Region.
LABORATORY TEST NUMBER: The number one (1) was used for samples retrieved from locations at Stations 0. The number two (2) was used for samples retrieved from locations at Stations 5+... The number three (3) was used for samples retrieved from locations within the test section (Stations 0+00 to 5+00). The number four (4) was for samples obtained by combining material from different areas of the test section. The number five (5) was for samples obtained by combining material from multiple test sections. This combining of samples across test sections was required on some SPS projects.
In some tables within the PPDB, laboratory test numbers higher than 5 were used. In these cases, test numbers 6 and 11 have the same meaning as test number 1. Test numbers 7 and 12 have the same meaning as test number 2. Test numbers 8 and 13 have the same meaning as 3. Test numbers 9 and 14 have the same meaning as 4. Test numbers 10 and 15 have the same meaning as 5.
LOCATION NUMBER: This was a threedigit alphanumeric code for the sample location obtained from field markings and Field Operations Information Form 1. This number designated the field location of the sample. Bulk samples may have been combined from several field locations to form a representative sample. See Section 3.2.6 for more information about the location number in these instances.
LTPP SAMPLE NUMBER: This was an alphanumeric fourdigit code which had two letters on the left side and two Arabic numerals on the right side which identified the type of sample/specimen and the sampling location of the material sample. Bulk samples may have been combined from several samples to form a representative sample used in testing. See Section 3.2.6 for more information about the sample number identified in these instances.
The first digit on the left was a letter that defines the "sample type." One of the following nine letters was used: C (Core sample), K (Block sample), B (Bulk sample), M (Moisture sample), T (thinwalled tube sample), J (Splitspoon sample), P (chunk and/or broken pieces), F (molded beam), G (molded cylinder).
The second digit from the left end had another letter which indicated the sample material. It may have been one of the following eight letters: A (asphalt concrete), P (portland cement concrete), X (portland cement concrete 14day test specimens), Y (28day test specimens), Z (365day test specimens), T (treated or bound base/subbase), G (granular or unbound base/subbase) and S (subgrade soil). Refer to the Field Sampling Guide for examples and a further explanation of the LTPP sample codes and numbers.^{(2)}
Sample numbers for each sample retrieved from the field and sent to the Participating Laboratory were found on Field Operations Information Form 1 from the Field Data Packet received from the Drilling and Sampling Crew.
At the bottom of each LTPP Standard Form, the following information was required:
SUBMITTED BY, DATE: The signature (clearly written) of the Laboratory Chief and the date of this signature. Underneath this signature, the corporate affiliation of the Laboratory Chief was identified.
CHECKED AND APPROVED, DATE: The signature (clearly written) of the LTPP Representative who checked and approved the report and the date of this signature. Underneath this signature, the corporate affiliation of the LTPP Representative was identified.
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Topics: research, infrastructure, pavements and materials Keywords: research, infrastructure, pavements and materials, Asphalt cement, asphalt concrete, field sampling, General Pavement Studies, laboratory testing, LTPP, material properties, pavement layering, Pavement Performance Data Base, portland cement concrete, protocol,Specific Pavement Studies, subbase, subgrade, treated base, unbound base TRT Terms: research, facilities, transportation, highway facilities, roads, parts of roads, pavements Updated: 03/08/2016
