粉煤灰与生石灰加固软土的室内试验研究  

Study on indoor tests of fly ash and quick lime improving soft soils

作　　者：林彤[1] 刘祖德[1] 

机构地区：[1]武汉大学土木建筑工程学院

出　　处：《岩土力学》2003年第6期1049-1052,共4页Rock and Soil Mechanics

基　　金：国家自然科学基金项目资助(编号:40172090)

摘　　要：粉煤灰是一种工业废弃物,与生石灰一样均可用来加固软土地基。笔者进行了粉煤灰与生石灰加固土的室内配方试验,分别将水泥或生石灰与粉煤灰按照不同的比例干拌均匀后,再与不同含水量的软土人工拌和均匀,测定了不同龄期的无侧限抗压强度;分析了石灰加固土强度与生石灰掺入比和龄期的关系及其压缩系数、压缩模量等的变化。并进一步分析了粉煤灰的加固机理,旨在为其进一步的研究和工程应用提供参考。Being industrial waste materials, fly ash and quick lime are used to improve soft soils. The dispensing formula indoor tests of fly ash and quick lime were done. According to the different proportions of cement (or quick lime) to fly ash, the samples mixed with soft soil of different water contents. Then unconfined compression strengths of the samples at four different ages were tested. The relationship between improved soil strength and content of quick lime as well as ages was analyzed. Compression coefficient and compression modulus of the soil were also discussed. Improving mechanism of fly ash was studied further more. The conclusion of soft soil strength increase and so on were obtained. The aim is to refer to further study and engineering application.

关 键 词：粉煤灰 生石灰 地基加固 室内试验研究 软土地基 压缩系数 

分 类 号：TU411[建筑科学—岩土工程]