软岩改良土特性的室内试验研究

研究基于对石灰和水泥改良土强度形成机理的分析，开展了软岩改良土大量的室内实验研究，将生石灰和水泥分别按不同比例，与不同含水量的软岩人工拌和均匀，进行击实试验，确定最大干密度和最佳含水率，比较不同掺灰量、不同龄期、不同压实度改良土的无侧限抗压强度，并根据生石灰和水泥的加固机理，进一步分析改良土密实度随掺灰比变化的规律，以及其强度与掺灰比、龄期、压实度的关系，从而确定改良方法及最佳掺灰比，旨在为客运专线路基的设计、施工进一步的研究和工程应用提供参考。

Study on Indoor Tests of the Characteristics of Modified Weathered Soft Rock

In order to sure the stability of the embankment and sub-grade, it is necessary to improve the weathered soft rock which is used as the filling of embankment. Research is carried out such as part in different proportion quick-lime or cement, with soft rock of different water contents being artificial to mix and stir evenly, go on compaction test, work the biggest dry density and optimum water content, then unconfined compression strengths of the samples at different proportions, different curing ages and different compactness were compared. The relationships between strengths and contents of quick lime, ages as well as compactness of improved soil were further analyzed based on improving mechanism of quick lime and cement. Thus the best modified way and the best content of quick lime or cement were assured, the aim is to provide reference to further study and engineering application.