Advances in Materials Science and Engineering

Research Article

Average Fracture Energy for Crack Propagation in Postfire Concrete

Table 1

Parameters calculated from wedge-splitting test.
SpecimenTemperature (kN) (GPa) (mm) / / (mm)COD1 (mm) (kN/mm) (kN/mm)
WS120°C8.304 15.30 0.107 1.484 2.273 0.970 5.231 0.389 0.174 1.926 87.081 79.219
WS29.407 20.51 0.097 3.131 1.206 0.998 10.468 1.140 0.205 4.914 116.710 113.648
WS310.379 20.66 0.114 2.464 1.117 0.991 8.699 1.818 0.195 3.280 117.610 110.633
WS47.884 18.88 0.112 1.599 3.224 0.964 5.128 0.137 0.152 1.903 107.480 98.911
WS59.364 15.45 0.107 2.048 1.683 0.991 6.970 0.735 0.199 2.657 87.940 80.103
Average 9.068 18.16 0.107 ——0.983 7.299 0.844 0.185 2.936 103.364 96.503
WS665°C11.282 21.73 0.113 2.781 1.506 0.996 9.238 0.984 0.195 3.205 123.690 116.172
WS78.151 24.79 0.132 2.739 0.987 0.999 10.320 1.263 0.215 6.072 141.100 136.109
WS810.379 19.43 0.115 6.114 1.992 0.954 11.004 0.702 0.212 4.549 110.560 105.418
WS910.681 23.25 0.119 2.658 1.030 0.993 9.283 2.250 0.164 3.535 132.330 124.685
WS1011.610 16.60 0.107 3.185 1.252 0.983 11.466 1.071 0.190 5.324 94.490 90.418
Average 10.421 21.16 0.117 ——0.985 10.262 1.254 0.195 4.537 120.434 114.560
WS11120°C8.353 10.65 0.095 2.477 1.085 0.990 8.423 1.094 0.191 3.418 60.638 57.254
WS128.226 11.87 0.107 2.667 0.890 0.999 10.624 1.803 0.224 6.443 67.564 65.212
WS137.631 9.48 0.119 4.340 0.998 0.980 13.227 2.487 0.357 5.641 53.926 50.511
WS147.302 15.42 0.117 2.139 1.153 0.998 6.934 1.357 0.198 3.534 87.758 82.839
WS15————————————
Average 7.878 11.85 0.109 ——0.992 9.802 1.685 0.243 4.759 67.472 63.954
WS16200°C————————————
WS176.466 11.58 0.127 2.266 1.526 0.952 6.260 0.520 0.284 2.558 65.913 57.759
WS185.884 6.98 0.115 2.268 2.982 0.995 5.035 0.129 0.335 1.968 39.732 32.967
WS195.071 9.17 0.127 2.770 2.087 0.969 5.397 0.265 0.306 2.786 52.178 46.456
WS205.228 7.00 0.130 2.530 0.366 0.903 7.605 1.250 0.458 4.447 39.866 35.765
Average 5.662 8.680.125 ——0.955 6.074 0.541 0.346 2.940 49.422 43.237
WS21300°C3.341 2.45 0.121 4.023 0.361 0.981 10.019 0.491 0.792 3.101 13.939 11.004
WS225.513 3.49 0.117 4.090 0.300 0.987 13.570 1.105 0.667 5.065 19.869 17.251
WS233.371 1.91 0.113 6.985 0.610 0.982 7.727 0.475 0.672 4.957 10.854 9.384
WS244.761 1.99 0.105 4.285 0.345 0.990 12.552 0.987 0.728 6.816 11.350 10.138
WS254.076 4.03 0.137 2.172 0.206 0.963 11.532 1.667 0.869 6.874 22.960 20.438
Average 4.213 2.78 0.119 ——0.981 11.080 0.945 0.746 5.363 15.794 13.643
WS26350°C5.701 6.05 0.131 5.702 0.447 0.995 12.290 1.475 0.599 4.549 34.409 29.878
WS273.840 2.03 0.125 6.245 0.335 0.958 14.150 1.490 1.003 6.768 11.538 9.829
WS284.718 3.60 0.131 5.553 0.454 0.997 11.312 1.107 0.815 4.053 13.490 16.360
WS294.554 3.38 0.130 9.025 0.608 0.995 11.635 0.355 0.821 5.940 19.240 16.582
WS303.931 3.21 0.134 7.135 0.532 0.990 10.251 0.654 0.832 5.335 18.279 15.427
Average 4.549 3.65 0.130 ——0.987 11.927 1.016 0.814 5.329 19.391 17.615
WS31400°C3.584 2.56 0.136 3.934 0.307 0.999 11.737 1.033 0.921 6.937 14.557 12.391
WS323.039 1.42 0.126 21.138 0.828 0.992 9.300 0.226 0.904 5.614 8.084 6.331
WS333.228 2.12 0.114 2.100 0.224 0.995 8.533 1.575 0.842 5.819 7.348 6.419
WS344.476 1.71 0.111 4.208 0.322 0.929 13.388 0.986 0.985 5.940 12.035 8.463
WS35————————————
Average 3.582 1.950.122 ——0.979 10.740 0.955 0.913 6.078 10.506 8.401
WS36450°C3.336 1.41 0.125 5.280 0.299 0.977 13.124 1.553 1.224 5.625 8.037 6.289
WS37————————————
WS383.118 1.46 0.123 10.235 0.543 0.981 10.601 0.978 1.057 5.672 8.291 6.216
WS393.056 1.34 0.127 2.518 0.137 0.995 11.955 3.960 1.281 6.784 7.611 6.099
WS402.935 1.58 0.137 4.328 0.226 0.998 13.896 2.395 1.394 6.000 8.988 6.900
Average 3.111 1.45 0.128 ——0.988 12.394 1.663 1.239 6.020 8.232 6.376
WS41500°C————————————
WS422.153 1.76 0.146 3.056 0.245 0.976 7.762 3.054 1.284 5.153 7.251 7.506
WS432.857 1.09 0.119 3.648 0.306 0.979 10.092 1.342 1.174 6.533 6.179 5.069
WS441.929 0.75 0.109 2.234 0.153 0.968 8.758 4.119 1.225 6.591 4.243 3.651
WS451.838 1.48 0.147 2.300 0.186 0.996 7.826 3.012 1.354 6.225 6.078 6.591
Average 2.194 1.27 0.130 ——0.977 8.002 2.494 1.259 6.125 5.938 5.704
WS46600°C1.129 0.47 0.130 2.102 0.278 0.931 4.197 1.280 1.482 7.000 2.656 2.094
WS471.474 0.48 0.128 3.018 0.238 0.954 7.245 2.236 1.784 10.000 2.718 2.233
WS481.649 1.14 0.152 1.992 0.132 0.979 8.390 4.551 1.908 7.100 3.909 2.858
WS491.138 0.38 0.131 1.183 0.120 0.971 5.018 2.950 1.865 10.000 1.165 1.761
WS501.243 0.38 0.124 2.507 0.285 0.943 5.273 1.280 1.644 8.000 1.174 1.727
Average 1.326 0.57 0.133 ——0.956 6.025 2.460 1.737 8.420 2.324 2.135