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

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100090080006-101Virgin binder = PG76-22R 2 = 0.8344 06-8406-150Virgin binder = PG76-22R 2 = 0.8563Virgin binder =PG70-22R 2 = 0.8605Tensile Strength (psi)70060050040030006-125Virgin binder = PG64-22R 2 = 0.430206-105Virgin binder = PG70-22R 2 = 0.319707-123Virgin binder = PG64-22R 2 = 0.00812003.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0Air Voids (%)'06-84 06-101 06-125 06-15007-123 06-105 Linear (06-101) Linear (06-150)Linear ('06-84) Linear (06-125) Linear (07-123) Linear (06-105)Figure 20: IDT Strength vs % Air Voids: All Mixes: -10°C660640IDT Strength @ 6.5% voids @ -10 Deg C (psi)62060058056054052006-125 06-105 07-123 06-84 06-101 06-150PG64-22 0% RAP PG70-22 10% RAP PG64-22 20% RAP PG76-22 0% RAP PG76-22 0% RAP PG70-22 10% RAPFigure 21: IDT Strength: All Mixes @ 6.5% Voids @ -10°C35
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
Page 1 and 2: • • • • • • • • •
Page 3 and 4: TECHNICAL REPORT DOCUMENTATION PAGE
Page 5 and 6: TABLE OF CONTENTSACKNOWLEDGEMENTS .
Page 7 and 8: LIST OF FIGURESFigure 1: Test Equip
Page 9 and 10: LIST OF TABLESTable 1: HMA Mixes an
Page 11 and 12: OBJECTIVESThe objective of this pro
Page 13 and 14: voids generally describes the avera
Page 15 and 16: Figure 1: Test Equipment SetupCreep
Page 17 and 18: and level of % air voids. Although
Page 19 and 20: specimen is actually at the test te
Page 21 and 22: same four mixes but at 4.4°C (40°
Page 23 and 24: n Dn PNormalization Constant = ×
Page 25 and 26: where:0.05 ≤ ν ≤ 0.50Tensile S
Page 27 and 28: Table 4: Creep Compliance: 06-101 (
Page 29 and 30: 0.10Creep Compliance (1/GPa)07-123
Page 31 and 32: as it pertains to creep compliance,
Page 33 and 34: However, published documentation of
Page 35 and 36: Getting back to the issue of the er
Page 37 and 38: 0.090Creep Compliance @ 100 sec. @
Page 39 and 40: Table 12: Instrumented Tensile Stre
Page 41 and 42: Table 15: All Tensile Strength: -10
Page 43: 100090080006-101Virgin binder = PG7
Page 47 and 48: Table 18: Tensile Failure Strain: -
Page 49 and 50: CONCLUSIONSExpected trends such as
Page 51 and 52: REFERENCES1. Guide for Mechanistic-
Page 53 and 54: APPENDIX A: CREEP COMPLIANCE
Page 55 and 56: 0.080.070.06Creep Compliance (1/GPa
Page 57 and 58: 0.200.180.160.14Creep Compliance (1
Page 63 and 64: 0.300.25Creep Compliance (1/GPa)0.2
Page 65 and 66: 0.140.12Creep Compliance (1/GPa)0.1
Page 67 and 68: Table B-19: Non-instrumented Data @
Page 69 and 70: Table B-21: Instrumented Data @ 21.
Page 71 and 72: Table B-23: Instrumented Data @ 4.4
Page 73 and 74: Table B-25: Instrumented Data @ -10

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

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