摘要
水泥稳定碎石半刚性基层是我国常用的基层结构形式,但由于设计载荷强度高易导致其开裂并形成面层反射裂缝,这导致了半刚性基层沥青路面较严重的水损害。通过大量的室内试验,对比分析在水泥稳定碎石基层中掺加一定剂量乳化沥青后,基层材料的无侧限抗压强度、劈裂强度、抗压回弹模量以及干缩性能的变化情况,研究在确保基层强度的前提下增加基层柔性及提高抗收缩性能的有效途径。
Cement- stabilized crushed -stone semi -rigid base is widely used in China＇s road construction. But bituminous pavements often crack and form reflection cracks on surface, because of high design loads. As a result, there are serious water damages on semi - rigid base＇s bituminous pavements. After a lot of experiment on the cement - stabilized crushed - stone base materials with some emulsified bitumen, compare and analyse the change about unconfined compression strength, spihing strength, modulus of resilience and air shrinkage nature . Being sure of base course rigidity, the text meterial carry on improving the flexible of base course and validity of the anti - contraction performance.
出处
《石油沥青》
2009年第3期45-48,共4页
Petroleum Asphalt
关键词
乳化沥青
水泥稳定碎石
基层
Emulsified pitumen
Cement - stabilized crushed - stone
Base course
