论文部分内容阅读
现在,铺筑柔性路面的基层,广泛采用矿物胶结料加固土,尤其是水泥加固土。在这种情况下,路面弯沉值减小,并因此而减轻了沥青混凝土面层的疲劳现象,同时还可降低路基的湿度,提高路基土的承载能力。然而在水泥土基层上的路面结构层通常也存在着一系列的缺陷,沥青混凝土面层与基层接触强度不足则当推其中之首。为了提高水泥土基层上沥青混凝土面层的剪切稳定性,寻找解决的措施,莫斯科公路学院为此进行了研究。根据计算和试验资料,结构层间的剪应力可达0.40～0.45MPa,在具体选择为提高结构层间接触强度的措施时,则必
Now, paving the grassroots of the pavement, the widespread use of mineral cement consolidation materials, especially cement soil. In this case, the deflection of the pavement is reduced, and therefore the fatigue of the asphalt concrete pavement is reduced, meanwhile the humidity of the subgrade can be reduced and the bearing capacity of the subgrade soil can be improved. However, there are usually a series of defects in the pavement structure layer on the cement-soil base. When the contact strength between the asphalt concrete surface layer and the base layer is insufficient, the first one is pushed. In order to improve the shear stability of asphalt concrete surfacing on the cement-soil subsoil and to find solutions to this problem, the Moscow Highway Institute conducted a study. According to the calculation and test data, the shear stress between the structural layers can reach 0.40 ~ 0.45MPa. When the specific choice is to increase the contact strength between the structural layers,