摘要
基于高速铁路路基对填料的严格要求,根据室内试验,分析了水泥改良黄土的物理力学性质,研究了不同水泥掺量、养护龄期等对于强度增长的影响,力求通过强度变化了解水泥土的固化程度,为工程施工所需配合比,提供参考依据.实验表明:Q3水泥改良黄土的最大干密度和压缩系数都随掺和比的增大而减小,无侧限抗压强度随掺和比的增大而增大,干湿循环时5%的水泥改良黄土稳定性最好.
Because of the strict demand of the embankment soil for high-speed railway, the physics-mechanics properties of cement-loess are probed on base of lab tests. Through tests, the influence of defferent cement content,days for strength are got. The results can help to understand cement-loess＇ s curing degree and can be the base of optimum proportioning needed for construction. The results indicate： when amount of cement increases, the unconfined compression,strength increases, while the max dry density and the compressibility decreases. When the amount of cement used is about 5 %, it＇s stability is best in the test of wetting-drying cycle.
出处
《兰州交通大学学报》
CAS
2005年第4期28-31,共4页
Journal of Lanzhou Jiaotong University
关键词
路基填料
水泥改良黄土
无侧限抗压强度
三轴固结不排水试验
工程特性
embankment soil
cement-loess
unconfined compression strength
triaxial nondrain consolidation test
engineering characteristic
