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 temperature
https://www.chinesestandard.net, 2021. 2. 8. - 11페이지
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.
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4 Test equipment
6 Test procedure
8 Test report
Appendix A Informative Test report on the cracking resistance of asphalt mixture at low temperature
according to Formula acquisition Aging Aging conditions applies asphalt mixture test average Bend strain energy Calculate Chen China coefficient concentrated load 𝑑𝑑𝑑𝑑 density of asphalt diagram difference distance document drafted Engineering environmental box flexural-tensile strain Form fulcrum GB/T greater greater than 0.1 height direction indicate invalid JTG E20 kilojoules per cubic less than 20 loading rate low temperature mark material measured meet the requirements megapascals MPa method micro-strains mid-span deflection millimeters mixture at low mixture test piece mixture type Modified asphalt mixture nominal maximum particle Note Ordinary asphalt mixture parameters piece beam bottom Place Preparation range reaches the critical Record references Road & Bridge section test piece sensor Shenzhen specified standard deviation strain energy density stress stress-strain Table test piece according test piece beam test report test temperature testing machine upper indenter voidage Wang Warm-mixed width