Asphalt mixture multi-stage loading high-temperature creep test method based on axle load spectrum
A technology of asphalt mixture and high-temperature creep, which is applied in the direction of material inspection products, analytical materials, measuring devices, etc., can solve the problems that the results cannot truly reflect the road conditions, etc., and achieve stable and reliable test results, simple and easy test methods, and test results. Conditional control for reasonable effects
Active Publication Date: 2016-05-11
SOUTHEAST UNIV
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[0003] The technical problem to be solved by the present invention is that the results obtained by the existing test
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The invention discloses an asphalt mixture multi-stage loading high-temperature creep test method based on an axle load spectrum. The test method includes the following steps that 1, the axle load spectrum of a road to be researched is analyzed, and a road axle load spectrum converted into a single-axle double-wheel set is obtained through a road maintenance management decision system (PMS); 2, the axle load stress level and weights of different axle loads are determined according to the road axle load spectrum; 3, a preloading test is conducted according to stress level data of a first loading sequence in the axle load stress level obtained in the step 2; 4, the number of action times of the first loading sequence in the test and the overall cycle length of multi-stage load actions are calculated according to weight data of the different axle loads obtained in the step 2; 5, a multi-stage loading high-temperature creep test is conducted according to the data obtained in the step 4; 6, a test result is obtained. High-temperature creep performance evaluation and prediction, which are more practical, for a material are provided for expressways with different traffic volumes and different axle load spectrums.
Description
technical field [0001] The invention specifically relates to a multi-stage loading high-temperature creep test method of an asphalt mixture based on an axle load spectrum, and belongs to the technical field of road engineering. Background technique [0002] In recent years, permanent deformation damage such as rutting has increasingly become one of the most typical and harmful disease forms of high-grade asphalt pavement in my country. Aiming at the problem of high-temperature rutting on asphalt pavement, domestic and foreign scholars have done a lot of research on test conditions, test methods, material composition, load characteristics, and environmental factors. The NCHRP research program of the United States has carried out the research on the simple performance test method of asphalt mixture. After a lot of screening and laboratory test research, three simple performance tests (simple performance test, referred to as SPT) are recommended to evaluate the permanent deform...
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Login to View More IPC IPC(8): G01N3/00G01N33/42
CPCG01N3/00G01N33/42G01N2203/0071
Inventor 倪富健蒋继望高磊娄深鑫
Owner SOUTHEAST UNIV