SMA物理力学性能测试与分析

DETERMINING AND ANALYZING PHYSICAL MECHANICAL PROPERTIES OF SMA

通过马歇尔试验、间接拉伸试验和车辙试验， 研究分析了ＳＭＡ组成对其物理力学性能的影响。结果表明： ＳＭＡ沥青混合料的主要马歇尔物理力学参数， 包括稳定度、空隙率随沥青含量的增加而减小， 不存在最佳沥青含量。在按马歇尔设计方法进行ＳＭＡ混合料组成设计时， 起控制作用的只有空隙率。

The effect of SMA compositions on its mechanical properties is analyzed by Mashall stability,indirect tensile and rutting tests Results indicate that Mashall stability and void ratio are basic mechanical parameters of SMA mixtures and reduce with increasing content of asphalt In the said parameters there is not optimum asphalt content,void ratio is only controlled role when SMA mixture composition will be designed