沥青混合料水稳定性汉堡车辙试验研究

Research on the Water Stability of Asphalt Mixtures Based on the HWTD

通过对沥青混合料常规水稳试验、浸水车辙试验及汉堡车辙试验(HWTD)的比较,分析了不同试验方法对沥青混合料水稳定性评价的影响。试验采用3种级配类型在不同试验方法下测定水稳定性评价指标。研究结果表明,常规水稳试验及普通浸水车辙试验都无法很好的评价沥青混合料的水稳定性,而HWTD试验可以得出合理的判定。

The influence of the test methods to the estimation of the water stability of asphalt mixtures was researched by comparing the general immersion tests, the immersion rutting test and the HWTD. Three types of gradations were used in the tests to measure the estimation index of the water stability under different test methods. The results indicate that the general immersion tests and the immersion-rutting test cannot accurately estimate the water stability of asphalt mixtures. The HWTD could more accurately evaluate the water stability of asphalt mixtures.