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Publication Number: FHWA-RD-07-052
Date: September 2007

Long Term Pavement Performance Project Laboratory Materials Testing and Handling Guide

Protocol H15L
Chip Seal Mix Design (SC11)

This LTPP protocol covers the procedures for determining the chip seal design to be used as part of the SPS-3 studies. The design procedure will be performed in accordance with Appendix C, Design of Surface Treatments, Procedure B, of the Asphalt Surface Treatments (MS-13) Handbook, published by the Asphalt Institute. Use AASHTO T85-88I for determining the bulk specific gravity of the aggregates. Allow for 10% aggregate waste (E). Assume a traffic factor (T) of 0.65 and a surface adjustment variable (V) of 0.00. These latter two will be adjusted in the field to modify the residual asphalt spread rate as needed for site specific conditions. The asphalt spread rate will be used to determine the emulsified asphalt spread rate.

The results will be recorded on LTPP Test Sheet H14.

LTPP LABORATORY MATERIAL HANDLING AND TESTING
LABORATORY MATERIAL TEST DATA
CHIP SEAL MIX DESIGN
LAB DATA SHEET H14

CHIP SEAL PROPERTIES
LTPP TEST DESIGNATION SC11/LTPP PROTOCOL H15L

LABORATORY PERFORMING TEST: _____________________________________________________________

LABORATORY IDENTIFICATION CODE: ___ ___ ___ ___

REGION: _________________________ STATE: STATE CODE: __ __

EXPERIMENT NO: _____ SHRP ID: __ __ __ __

SAMPLED BY: _________________________________________ FIELD SET NO: ___

DATE SAMPLED: __ __ - __ __ - __ __ __ __ SAMPLING AREA NO: SA- ____

1. LAYER NUMBER ___

2. LABORATORY TEST NUMBER __

3. LOCATION NUMBER __ __ __

4. LTPP SAMPLE NUMBER __ __ __ __

5. TEST RESULTS

      (a) BULK SPECIFIC GRAVITY OF AGGREGATE __.__ __

      (b) AVERAGE LEAST DIMENSION, in __.__ __

      (c) AGGREGATE WASTAGE FACTOR (E) __.__ __

      (d) AGGREGATE SPREAD RATE, lb/yd2 __ __.__

      (e) TRAFFIC FACTOR (T) __.__ __

      (f) SURFACE CONDITION VARIABLE (V), gal/yd2 __.__ __

      (g) RESIDUAL ASPHALT SPREAD RATE, gal/yd2 __.__ __

6. COMMENTS

      (a) CODE ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

      (b) NOTE _______________________________________________________

7. TEST DATE __ __ - __ __ - __ __ __ __

GENERAL REMARKS:___________________________________________________________________________
SUBMITTED BY, DATECHECKED AND APPROVED, DATE
____________________________________________________________
LABORATORY CHIEF
Affiliation______________________
Affiliation______________________
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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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