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Suggested Citation:"Appendix A. Detailed Test Results." National Academies of Sciences, Engineering, and Medicine. 2021. Validation of a Performance-Based Mix Design Method for Porous Friction Courses. Washington, DC: The National Academies Press. doi: 10.17226/26333.
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Page 26
Page 27
Suggested Citation:"Appendix A. Detailed Test Results." National Academies of Sciences, Engineering, and Medicine. 2021. Validation of a Performance-Based Mix Design Method for Porous Friction Courses. Washington, DC: The National Academies Press. doi: 10.17226/26333.
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Page 27

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26 A P P E N D I X A Detailed Test Results Table A-1. Cantabro Loss Results of Lab and Plant Mixtures Project Sample ID Corelok Air Voids (%) Initial Mass (g) Final Mass (g) Cantabro Loss (%) Avg. Air Voids (%) Avg Cantabro (%) SC Plant 4 15.3 4,116.4 3,462.3 15.9 14.8 14.3 SC Plant 6 14.5 4,104.6 3,607.8 12.1 SC Plant 8 14.6 4,120.7 3,504.6 15.0 SC Lab B1 3 14.2 4,102.6 3,746.9 8.7 14.5 9.6 SC Lab B1 11 14.6 4,107.7 3,662.7 10.8 SC Lab B1 12 14.8 4,110.3 3,729.0 9.3 GA Plant 4 19.5 3,988.3 3,367.1 15.6 19.5 21.5 GA Plant 6 19.3 3,998.4 2,940.0 26.5 GA Plant 8 19.6 3,992.8 3,098.8 22.4 GA Lab B1 6 18.4 3,987.1 3,595.8 9.8 18.8 11.5 GA Lab B1 7 19.1 4,010.8 3,452.6 13.9 GA Lab B1 12 18.8 4,015.8 3,581.8 10.8 AL Plant 4 14.5 4,211.2 3,936.8 6.5 14.3 5.7 AL Plant 7 14.1 4,183.0 3,983.5 4.8 AL Plant 8 14.4 4,196.7 3,957.6 5.7 AL Lab 2-hr 19 15.8 3,998.4 3,554.8 11.1 17.6 17.2 AL Lab 2-hr 22 16.7 4,094.2 3,663.8 10.5 AL Lab 2-hr 23 20.2 4,096.2 2,865.6 30.0

27 Table A-2. Indirect Tensile Strength Results of Lab and Plant Mixtures Mix ID F/T Cycles Spec. ID Ht (in.) Dia. (in.) Corelok Va (%) Peak Load (lb) ITS (psi) Avg. ITS TSR SC Plant 1 1 5.906 3.986 15.1 2,798.9 75.7 73.9 0.77 1 7 5.906 3.966 14.4 2,816.0 76.5 1 9 5.906 3.988 14.8 2,565.1 69.3 0 3 5.906 3.963 14.6 3,249.6 88.4 95.9 0 5 5.906 3.960 15.1 3,536.9 96.3 0 10 5.906 3.953 14.9 3,779.4 103.1 SC Lab 1 7 5.906 3.925 15.4 2,894.0 79.5 80.3 0.87 1 8 5.906 3.989 16.2 2,740.5 74.1 1 14 5.906 3.852 13.9 3,125.7 87.5 0 9 5.906 3.826 14.5 3,295.6 92.8 92.3 0 10 5.906 3.881 16.5 3,055.5 84.9 0 13 5.906 3.973 14.6 3,651.4 99.1 GA Plant 1 1 5.906 3.984 19.2 2,607.7 70.6 76.8 0.85 1 5 5.906 3.981 19.3 2,690.1 72.8 1 10 5.906 3.986 19.7 3,213.3 86.9 0 3 5.906 3.967 19.5 3,014.5 81.9 90.6 0 7 5.906 3.943 19.5 3,218.2 88.0 0 9 5.906 3.972 19.3 3,755.8 101.9 GA Lab 1 4 5.906 3.864 18.9 1,895.5 52.9 53.4 0.92 1 9 5.906 3.967 19.4 1,939.7 52.7 1 11 5.906 3.922 18.3 1,988.1 54.6 0 5 5.906 3.871 18.6 2,144.7 59.7 58.0 0 8 5.906 3.923 18.0 2,350.7 64.6 0 10 5.906 3.958 19.8 1,829.1 49.8 AL Plant 1 5 5.906 3.944 13.8 2,278.9 62.3 64.6 0.75 1 6 5.906 3.863 14.7 2,171.1 60.6 1 10 5.906 4.010 14.4 2,636.1 70.9 0 9 5.906 3.934 14.2 3,119.9 85.5 85.7 0 12 5.906 3.764 14.9 2,921.5 83.7 0 13 5.906 3.956 13.8 3,222.9 87.8 AL Lab - 2 hour 1 18 5.906 3.968 18.4 2,227.2 60.5 69.2 0.82 1 21 5.906 3.965 15.2 3,002.3 81.6 1 25 5.906 3.869 18.5 2,354.3 65.6 0 16 5.906 4.048 17.7 3,127.0 83.3 84.6 0 26 5.906 3.991 15.8 3,496.0 94.4 0 24 5.906 3.958 18.0 2,793.7 76.1

Validation of a Performance-Based Mix Design Method for Porous Friction Courses Get This Book
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Porous Friction Course (PFC) mixtures are designed with an open aggregate structure to yield high inplace air voids (i.e., typically between 15 and 20 percent). This allows rainwater to drain horizontally through the layer toward the edge of the pavement structure, thereby improving pavement surface friction.

The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 305: Validation of a Performance-Based Mix Design Method for Porous Friction Courses is designed to assist state highway agencies in implementing the proposed performance-based mix design procedure, verify if the thresholds proposed in the procedure could be achieved, and refine the procedure if needed.

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