Appendix A, LTPP Materials Characterization Program: Verification of Dynamic Test Systems With an Emphasis on Resilient Modulus, FHWA-RD-02-034 - Pavements

APPENDIX A. SAMPLE DATA COLLECTION FORMS

Sample forms used for recording the appropriate data during the verification testing are contained in this appendix. A checklist of items to be completed, arranged in an order designed to follow the proficiency procedure from start to finish, also is included.

Inspection Date: ______/_______/__________

Laboratory Name: ______________________________

Equipment Model: ______________________________

Channel Designation: ______________________________

Input Voltage Amplitude: (peak-to-peak, pp) _____________________

Data Collection Channels
Input Freq. (Hz)	Input Voltage (pp)	Data Acquisition Recorded Voltage (pp)	Data Acquisition Derived Input-Output Delay (ms)
2	__ __.__ __	__ __.__ __
4	__ __.__ __	__ __.__ __
6	__ __.__ __	__ __.__ __
8	__ __.__ __	__ __.__ __
10	__ __.__ __	__ __.__ __
12	__ __.__ __	__ __.__ __
14	__ __.__ __	__ __.__ __
16	__ __.__ __	__ __.__ __
18	__ __.__ __	__ __.__ __
20	__ __.__ __	__ __.__ __
50	__ __.__ __	__ __.__ __	__ __ __ __

Gain Setting: ____________________________________

Filter Setting: ____________________________________

Figure 14. Form. Sample form 1—data collection channel check.

Inspection Date: _______/_______/__________

Laboratory Name: ______________________________

Equipment Model: ______________________________

Load Cell Zero Reading
Load cell description	_____________________________
Vendor	_____________________________
Model number	_____________________________
Serial number	_____________________________
Capacity	______________ kN
Sensitivity	__ . __ __ __ mV/V
ax. Zero value (±1.5 percent of sensitivity)	±1.5 percent of full scale
ax. Zero value (±1.5 percent of sensitivity)	±__ . __ __ __ mV/V
Strain indicator error	±5 micro strain
Gauge factor on strain indicator	2
Balance range	0
Balance pot	500
Measured zero value (including strain indicator error)	+ or - __ __ __ micro strain + or - __ . __ __ __ ±0.0025 mV/V
Load cell zero values within specified tolerances?	Yes / No
Last calibration date	_____ /_____ / ________

Figure 15. Form. Sample form 2—determination of load cell zero reading.

Inspection Date: _______/_______/__________

Laboratory Name: ______________________________

Equipment Model: ______________________________

Load Cell
Nominal Load Level (kN)	Dial Gauge Reading	Proving Ring Load Level (kN)	Laboratory Load Cell (kN)	Ratio of Proving Ring to Load Cell Readings
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__
__. __ __	__ __ __	__.__ __ __	__.__ __ __	__.__

Figure 16. Form. Sample form 3—load cell check.

Inspection Date: _______/_______/__________

Laboratory Name: ______________________________

Equipment Model: ______________________________

Load versus Deformation
Nominal Target Load* (kN)	Mean Applied Load (kN)	Mean LVDT Reading, mm	Rv=Ymax/Y min 1.1	Point within ±5%?
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No
_ _._ _	_ _._ _	_._ _ _ _ _	Yes / No	Yes / No

*Load levels are dependent on the type of load cell and proving ring used to conduct the testing.

Figure 17. Form. Sample form 4—dynamic load versus deformation check.

Inspection Date: _______/_______/__________

Laboratory Name: ______________________________

Equipment Model: ______________________________

Triaxial Chamber: Type 1/Type 2 (circle one)

Triaxial Chamber
Time, min.	Pressure Level 1 (kPa)		Pressure Level 2 (kPa)		Pressure Level 3 (kPa)		Pressure Level 4 (kPa)		Pressure Level 5 (kPa)
Time, min.	System	Gauge	System	Gauge	System	Gauge	System	Gauge	System	Gauge
0	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
1	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
2	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
3	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
4	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
5	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
6	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
7	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
8	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
9	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._
10	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._	_ _ _._

Figure 18. Form. Sample form 5—triaxial cell check.

Inspection Date: _______/_______/__________

Laboratory Name: ______________________________

Equipment Model: ______________________________

Environmental Chamber
Time, min.	Temperature Level 1 (°C)		Temperature Level 2 (°C)		Temperature Level 3 (°C)
Time, min.	System	Gauge	System	Gauge	System	Gauge
0.00	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
1	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
2	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
3	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
4	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
5	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
6	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
7	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
8	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
9	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__
10	__ . __	__ . __	__ __ . __	__ __ . __	__ __ . __	__ __.__

Figure 19. Form. Sample form 6—environmental chamber check.

Equipment Availability

Check that the following items are ready prior to beginning the QC procedure:

Latest version of procedure.: _____
Computer with sufficient hardware/software for data analysis.: _____
Pressure gauge.: _____
Triaxial cell and pressure system.: _____
Loading device.: _____
Electronic load cell.: _____
Spring-loaded LVDTs.: _____
Signal excitation, conditioning, and recording equipment.: _____
All other miscellaneous equipment needed for preparing samples.: _____
Bulk material splitter.: _____
152 mm diameter split mold, minimum height of 381 mm.: _____
71 mm diameter mold, minimum height of 152 mm.: _____
Vibratory compaction device.: _____
Spacer plugs for compaction of material lifts.: _____

Electronic Systems Performance Verification Check

The electronic systems performance verification check has been successfully completed.: _____

Calibration Check and Overall System Performance Verification Procedure

Calibration check and overall system performance verification procedure has been successfully completed.: _____

Type 1 (Base/Subbase) Proficiency

Sample preparation is performed satisfactorily.: _____
Moisture content within ±1 percent of specified.: _____
Dry density within ±3 percent of specified.: _____
Specimen is compacted according to appendix B procedure.: _____
Porous stone and sample cap in place.: _____
Specimen is placed in triaxial chamber, with all lines hooked up, and no leakage is noted.: _____
Triaxial chamber checked for levelness.: _____
Initial pressure of 14 kPa applied to specimen in chamber.: _____
Apply confining pressure of 103 kPa.: _____
Load cell and LVDTs ready to begin testing.: _____
Sample is not decreasing in height after preconditioning.: _____
The type 1 (subgrade) test sequence has been performed.: _____
Remove specimen and determine moisture content.: _____
Triaxial pressure maintained within tolerance throughout testing.: _____
LVDT ratios are within acceptable tolerances.: _____
Specimen was handled appropriately throughout the test procedure.: _____

Type 2 (Subgrade) Proficiency

Sample preparation is performed satisfactorily.: _____
Moisture content within ±0.5 percent of specified.: _____
Dry density within ±3 percent of specified.: _____
Specimen is compacted according to procedure in LTPP Protocol P46.: _____
Porous stone and sample cap in place.: _____
Specimen is placed in triaxial chamber, with all lines hooked up, and no leakage is noted.: _____
Triaxial chamber checked for levelness.: _____
Initial pressure of 14 kPa applied to specimen in chamber.: _____
Apply confining pressure of 41 kPa.: _____
Load cell and LVDTs ready to begin testing.: _____
Sample is not decreasing in height after preconditioning.: _____
The type 2 (subgrade) test sequence has been performed.: _____
Remove specimen and determine moisture content.: _____
Triaxial pressure maintained within tolerance throughout testing.: _____
LVDT ratios are within acceptable tolerances.: _____
Specimen was handled appropriately throughout the test procedure.: _____

Figure 20. Form. Sample form 7—checklist for proficiency procedure

Equipment Availability

Check that the following items are ready prior to beginning the QC procedure.

Latest version of procedure.: _____
Computer with sufficient hardware/software for data analysis.: _____
Environmental chamber and temperature control system.: _____
Loading device.: _____
Diametral loading heads and specimen restraint system.: _____
Gauge points.: _____
Contact point template.: _____
Gauge point mounting system.: _____
Humidity cabinet.: _____
Data reduction and analysis system.: _____
LVDT calibration unit.: _____
Electronic load cell.: _____
Extensometers (4).: _____
Signal excitation, conditioning, and recording equipment.: _____
All other miscellaneous equipment needed for preparing samples.: _____
Masonry saw capable of cutting smooth surfaced specimens.: _____

Electronic Systems Performance Verification Check

The electronic systems performance verification check has been successfully completed.: _____

Calibration Check and Overall System Performance Verification Procedure

Calibration check and overall system performance verification procedure has been successfully completed.: _____

Proficiency Testing

Sample Preparation

Cores for testing have visible cracks or deformed in any manner.: _____
Specimens for test of one pavement layer.: _____
Specimens from one area of test specimen.: _____
Top and bottom surfaces trued as necessary.: _____
Test specimen greater than 25.4 mm but less than 53.3 mm in thickness.: _____
Core examination and thickness performed.: _____
Bulk specific gravity performed.: _____
Bulk specific gravities similar for the three candidate test specimens.: _____
Thickness measurement conducted by averaging four measurements located at quarter points around the sample perimeter and 13 to 25 mm in from the edge.: _____
Diameter measured (1) along the axis parallel to the direction of traffic and (2) the axis perpendicular to the axis measured in (1).: _____
Diameter ≥ 97.8 mm or ≤ 105.4 mm.: _____
Diametral axis marked with loading head contact template.: _____
Specimen sawn to provide smooth, parallel surfaces for mounting the measurement gauges.: _____
Gauge points attached per protocol.: _____
Samples’ temperature and moisture conditioned properly before test.: _____
Core samples in the cabinet/chamber for a minimum of 24 hours before testing at 5 °C and 25 °C.: _____
Specimens held at 40 °C for a minimum of 3 hours, but not exceeding 6 hours, before testing.: _____
Specimens stored in an environment where the temperature is maintained between 5 and 21 °C until they are to be conditioned for testing.: _____
Deformation devices mounted on sample and zeroed/rebalanced before test.: _____

Creep Compliance Testing

Load strip alignment mark on test specimen located in line of action of actuator shaft and loading strips (back and front).: _____
Specimen to strip surface in a contact condition (no obvious projections or depressions).: _____
Static load of fixed magnitude applied without impact to specimen.: _____
Fixed load produce horizontal strain of 150 to 350 micro strain.: _____
Constant static load within 2 percent of required loading during entire test procedure.: _____
Reasonable deformation response.: _____
Data collected at 10 Hz for first 10 s and 1 Hz for remaining 90 s.: _____
Initial load level achieved at end of test.: _____
Three temperatures achieved and within tolerance.: _____

Resilient Modulus Testing

Deformation devices zeroed or rebalanced prior to start of test.: _____
Correct haversine waveform produced.: _____
Reasonable deformation response.: _____
Horizontal strain in the 150 to 350 micro strain range.: _____
Data collected uniformly at 500 Hz.: _____
Five load cycles recorded.: _____
All three temperatures achieved and within tolerance.: _____

Strength Testing

All other testing complete and results checked prior to commencing test.: _____
Test performed at the correct temperature and within tolerance.: _____
Deformation devices zeroed or rebalanced prior to start of test.: _____
Load applied to specimen correctly.: _____
Data collected at 1 Hz.: _____
Test stopped when load begins to decrease.: _____

Calculations

Calculations performed completely and accurately.: _____

Completion of Data Forms

Calculations performed completely and accurately.: _____

Figure 21. Form. Sample form 8—checklist for asphalt proficiency procedure.

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APPENDIX A. SAMPLE DATA COLLECTION FORMS

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