工程地质学报2016，Vol.24Issue(1)：96-101,6.DOI:10.13544/j.cnki.jeg.2016.01.012
粉煤灰水泥土变形特性实验研究
EXPERIMENTAL STUDY OF DEFORMATION CHARACTERISTICS OF FLY ASH CEMENT-SOIL
摘要
Abstract
The incorporation of fly ash into cement-soil can improve its performance in a certain extent.The deformation characteristic is an important index of actual engineering applications.Therefore,researching the effects of fly ash and ages on deformation characteristics of cemente-soil has a great reference value to actual engineering applications.The unconfined compressive strength test of 0 and 8% fly ash cement-soil is done.The experiments show that the growth of the curing age and the addition of fly ash are beneficial to the growth of cement-soil deformation modulus.Especially,the addition of fly ash is beneficial to the growth of the late deformation modulus. By further analyzing the unconfined compressive strength and the average deformation modulus of 0 and 8% fly ash cement-soil specimen,it is found that there is a basically linear relationship between them.Then the conversion formula is derived between them by fitting.Finally,considering the characteristics of stress-strain curve model and regression analysis on the test data,the expression of stress-strain of cement-soil on ascent stage is deduced under the definite condition.The results provide the reference for actual engineering designs.关键词
水泥土/粉煤灰/龄期/无侧限抗压强度/变形特性Key words
Cement-soil/Fly ash/Curing period/Unconfined compressive strength/Deformation characteristics分类
建筑与水利引用本文复制引用
陈峰,赖锦华..粉煤灰水泥土变形特性实验研究[J].工程地质学报,2016,24(1):96-101,6.基金项目
福建省自然科学基金项目(编号:2015J01634),福建省省属高校专项科研项目(编号:JK2014059)资助. （编号:2015J01634）
