论文部分内容阅读
水泥混凝土路面板体的破坏,除由于车辆吨位的增加和交通密度的不断增长及原有路基不稳定外,另一个原因是由于接缝(包括缩缝、胀缝、建筑缝)的漏水促使路基软化而造成的。在实践中我们发现混凝土路面在修筑通车三、四年后,一部分缩缝慢慢开始断裂,同时发现很多破坏板体下面,路基多半是非常潮湿的。因此要防止板体过早的破坏,一定要保证接缝不漏水,而这与填缝材料有密切关系。以前我们采用沥青:石棉:石粉=3∶1∶1的玛(王帝)脂、沥青砂和纯沥青来填缝,效果都不好。主要是夏天泛油,冬天又发裂漏水,不得不一年填筑两次,浪费很大。后来改用1.5∶1∶1和1∶1∶1
In addition to the increase of vehicle tonnage and the continuous increase of traffic density and the instability of the original roadbed, the failure of cement concrete pavement board body is due to the leakage of seams (including shrinkage joints, expansion joints and construction seams) Soften In practice, we found that some or all of the shrinkage joints began to break after the concrete pavement was opened to traffic for three or four years. Most of the subgrade was found to be very damp under a lot of damaged plates. Therefore, to prevent premature plate damage, we must ensure that the joints do not leak, which is closely related with the caulk material. Before we use asphalt: Asbestos: stone powder = 3: 1: 1 Ma (king emperor) fat, tar sands and pure asphalt to fill joints, the effect is not good. The main is the summer of oil pan, water leakage in winter, had to fill two times a year, a lot of waste. Later switched to 1.5: 1: 1 and 1: 1: 1