红粘土填料的路用性质研究

通过对耒宜高速公路红粘土填料路用性能的分析，结合土的失水收缩开裂和复水软化特征的室内试验结果，对红粘土路基表面开裂现象及裂缝扩展规律进行了研究，初步提出了防治开裂的工程措施及可直接用作填料的红粘土的评价标准。

Research on Nature of Red-Clay-Filling Material Used in Road

By analysing not only the nature of red-clay-filling material in Lei-Yi Expessway in Hunan province, but also results of indoor test about combined soil's losing-water shrink cracks and multiwater softening features, the cracking of the surface of red clay roadbed and crack extension rule are researched. Meanwhile , both engineering measures for preventing cracking and evaluation standard of red clay directly used as filling material are put forward preliminarily.