实验参数对沥青混合料抗剪性能的影响

Influence of Experimental Parameters on Shear Resistant Performance of Asphalt Mixture

该文介绍了利用直接剪切试验结合无侧限抗压试验和劈裂试验对沥青混合料的抗剪性能所进行的研究。结果表明,C值随沥青用量的增加而先增加后减小,φ值随沥青用量的增加而减小,抗剪强度随沥青用量的增加而先增加后减小;随着加载速率的增大,沥青混合料的抗剪强度和C值增加,但是φ值基本上不变;随着温度的升高,混合料的抗剪强度降低,C值和φ值也随之减小。

The article introduces and studies the shear resistant performance of asphalt mixture by the direct shearing test combined with the unconfined compressive test and the splitting test.The result shows that the value C firstly increases and then decreases with the increment of the asphalt quantity,the valueφdecreases with the increment of asphalt quantity and the shear resistant strength firstly increases and then decreases with the increment of asphalt quantity.The shear resistant strength of asphalt mixture and the value C increase with the increment of loading velocity,but the valueφbasically does not change.The shear resistant strength of mixture decreases,and the values C andφalso decrease with the rising of temperature.