摘要
桂林石灰岩地区其基岩面处的红黏土常处于高塑性状态,含有机质时其强度低。通过对高塑性有机质红黏土的加固试验,研究其在有无外加高效减水剂的情况下,水泥掺量、养护时间及水灰比对其无侧限强度的影响。试验表明:高塑性有机质红黏土在水泥加固条件下,其无侧限抗压强度会随着水泥掺量及养护时间的增加而增加,随着水灰比的提高而减小;高效减水剂能明显提高和改善高塑性有机质红黏土的强度力学性质。该试验研究可为红黏土地区的水泥土加固优化设计及施工提供科学依据,以满足实际工程的需要。
The red clay on the surface of Guilin limestone bedrock is of at high plastic state,when it contains organic matter en its intensity is low. Through the high plasticity organic red clay reinforced trials to study the affect of cement content,curing time and the water-cement ratio on its unconfined strength in case of presence or absence of additional superplasticizer. It shows that: high plastic organic red clay in cement stabilized conditions,the unconfined compressive strength will increase with the increase of cement content and curing time,and decreases with the increasing of water cement ratio; superplasticizer can significantly improve the mechanical properties of high strength plastic organic red clay. The experimental results can provide a scientific basis for the optimization design and construction of soil cement red clay area reinforcement,in order to meet the actual needs of the project.
出处
《工业建筑》
CSCD
北大核心
2014年第S1期850-853,共4页
Industrial Construction
基金
广西研究生教育创新计划资助项目(YCSZ2014156)
广西自然科学资金重点项目(2010GXNSFD013011)
广西科学研究与技术开发计划项目资助(桂科攻0992027-8)
关键词
改善
高塑性
有机质红黏土
高效减水剂
强度试验
improvement
high plasticity
organic red clay
superplasticizer
strength test
