GB/T 38948-2020 Translated English of Chinese Standard. (GBT 38948-2020, GB/T38948-2020, GBT38948-2020): Evaluation method for the cracking resistance of asphalt mixture at low temperaturehttps://www.chinesestandard.net, 2021 M02 8 - 11 pages This Standard specifies test equipment, preparation, test procedures, calculation, and test report for the evaluation of the cracking resistance of asphalt mixture at low temperature. This Standard applies to all kinds of hot-mixed, warm-mixed and cold-mixed asphalt mixtures whose nominal maximum particle size is no more than 26.5 mm. |
Contents
| 3 | |
1 Scope | 4 |
4 Test equipment | 5 |
6 Test procedure | 7 |
8 Test report | 9 |
Appendix A Informative Test report on the cracking resistance of asphalt mixture at low temperature | 11 |
Common terms and phrases
according to Formula Aging conditions asphalt mixture according asphalt mixture reaches asphalt mixture test Bend strain energy bending test destruction Calculate concentrated load crack formation cracking resistance cubic meter kJ/m3 𝑑𝑑𝑑𝑑 density of asphalt Design Institute Dimensions of test environmental box flexural-tensile strain GB/T greater than 0.1 height direction JTG E20 kilojoules per cubic low temperature lower support megapascals MPa micro-strains mid-span deflection mid-span section test millimeters mixture at low mixture test piece mixture The energy mixture type Modified asphalt mixture nominal maximum particle Ordinary asphalt mixture piece beam bottom reaches the critical rectangular parallelepiped resistance of asphalt Road & Bridge section test piece Shenzhen standard deviation strain energy density stress stress-strain Terms and definitions test at low test destruction process test piece according test piece beam test report test temperature testing machine thermal insulation upper indenter vernier caliper voidage Wang Warm-mixed width με