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道路工程在快速发展的同时,由于低温使道路存在不同程度的病害。对沥青混合料的低温抗裂性能,目前主要采用低温弯曲试验的破坏弯拉应变和破坏弯拉强度作为评价指标。本文研究基于沥青混合料粘弹性特性,根据东北气候条件对沥青混合料进行材料选取,选用AC-16和SMA-16等2种典型的沥青混合料进行低温弯曲蠕变试验。采用NU-10气动沥青多功能试验机进行沥青混合料动态模量及沥青混合料的低温蠕变试验测试数据采集。
Road projects in the rapid development at the same time, due to the low temperature so that the road there are different levels of disease. As for the low temperature cracking resistance of asphalt mixture, the bending strain at break and the bending strength at break of low temperature bending test are mainly used as evaluation indexes. In this paper, based on the viscoelastic properties of asphalt mixture, the asphalt mixture was selected according to the weather conditions in Northeast China. Two typical asphalt mixtures, such as AC-16 and SMA-16, were selected to conduct low temperature creep creep tests. NU-10 pneumatic asphalt multi-function testing machine is used to test the dynamic modulus of asphalt mixture and low temperature creep test data of asphalt mixture.