Determination of Creep Compliance and Tensile Strength of Hot-Mix ...

Tensile Failure StrainThe tensile failure strain results determined using horizontal deformations recordedduring the instrumented IDT strength testing are given in Tables 16 – 18. The resultsare expressed in microstrain based on a 38 mm gauge length.Table 16: Tensile Failure Strain: 21.1°CID Specimen Voids Average Failure Strain (microstrain)No. (%) Voids North South Average06-84 13 4.0 96 17806-84 20 4.4 4.0 172 163 18006-84 21 3.6 267 20306-84 16 6.4 176 8006-84 19 6.5 6.5 105 211 15306-84 20 6.6 142 20306-84 2 9.3 89 17206-84 13 9.2 9.1 247 228 18006-84 28 8.7 130 21106-101 2 3.9 80 21106-101 6 4.1 4.0 189 133 15006-101 22 4.1 118 17006-101 18 6.1 285 16006-101 20 6.8 6.5 90 92 12906-101 27 6.5 52 9506-101 2 8.9 128 17906-101 21 9.1 9.0 145 268 18306-101 28 9.1 222 15406-125 14 3.9 162 16806-125 25 4.1 4.1 181 258 19306-125 26 4.3 151 23806-125 10 6.2 286 30806-125 19 6.9 6.5 185 199 22706-125 29 6.3 168 21306-125 5 9.4 80 17606-125 16 9.0 9.0 287 195 18006-125 28 8.6 197 14906-150 7 4.1 159 23306-150 14 4.1 4.1 157 213 17906-150 17 4.0 179 13306-150 23 6.8 195 26406-150 8 6.8 6.8 213 240 22806-150 21 6.7 177 28306-150 18 9.0 147 31006-150 25 8.9 9.0 225 346 26606-150 24 9.2 225 343At 21.1°C (70°F), all failure strains coincided with the maximum load. Of particularinterest is the lack of an obvious trend relating failure strain to % air voids for eachmix.36