基于贯入试验的沥青混合料抗剪强度影响因素研究

Research on Influencing Factors of Shear Strength of Asphalt Mixture Based on Penetration Test

本文利用单轴贯入试验,分别从粗集料、细集料、沥青种类以及加载速率四个因素来探讨对沥青混合料抗剪强度的影响程度。实验结果表明,粗集料的棱角性与沥青混合料的抗剪强度有较好的相关性;沥青类型对混合料的最大抗剪强度影响显著;加载速率越大,最大抗剪强度随之增加。

In this paper,uniaxial penetration tests are used to explore the influence of coarse aggregate,fine aggregate,asphalt type and loading rate on the shear strength of asphalt mixtures.The experimental results show that the angularity of the coarse aggregate has a good correlation with the shear strength of the asphalt mixture;the type of asphalt has a significant influence on the maximum shear strength of the mixture;the higher the loading rate,the greater the maximum shear strength.