沥青混合料密度试验方法合理选择研究

Study of Rational Choice of Methods for Asphalt Mixture Density Testing

以数理统计方法为理论计算依据、相关系数作为判断指标,分别采用表干法、水中重法和蜡封法对不同级配的SMA沥青混合料进行测试,通过综合考虑空隙率、吸水率与密度的相关性优劣,来确定与不同级配的SMA沥青混合料相适应的密度试验方法。为沥青混合料密度试验方法的合理选择提供了理论依据和判断标准。

As theoretical calculating basis with mathematical statistics,as evaluating index with correlative coefficient, the test of SMA asphalt mixture with different water weight method and wax sealing grading is performed respectively by surface drying method, method. By way of comprehensive consideration of correlation of void ratio and water absorptivity to density to determine density testing methods suited to SMA asphalt mixture with different grading, which provides theoretical basis and judgement critaria for rational choice of methods for asphalt mixture density testing.