摘要
以固原黄土高原地区某路基黄土为研究对象,采用水泥、硅微粉对黄土进行工程性能改良。利用掺量分别为2%、4%、6%的水泥和掺量分别为5%、10%、15%的硅微粉对黄土进行固化;并分别进行了龄期为7 d、28 d和90 d的无侧限抗压强度试验。试验结果表明:固化黄土的无侧限抗压强度随着水泥、硅微粉的掺量增加呈现先增加后减小的趋势,得出了4%水泥,10%硅微粉为固化黄土的最优配比;分析了水泥、硅微粉的掺量、养护龄期与固化黄土的无侧限抗压强度之间的影响关系,为利用水泥、硅微粉固化黄土提供了理论依据和借鉴。
Regarding roadbed loess in Guyuan＇s loess plateau,cement,silica powder were usd to improve loess＇ engineering properties. By using 2%,4% and 6% of the dosage of cement,and 5%,10% and 15% of the dosage of silica powder to solidify loess and do unconfined compressive strength tests whose ages are 7 d,28 d and90 d. The tests results show that solidified loess unconfined compressive strength increases firstly and then decrease as the dosages of cement and silica powder increase. According to the tests,the best matching to solidify loess contains 4% cement and 10% silica powder. The experiments analyze the relationships among the dosages of cement,silica powder,curing period and the unconfined compressive strength of solidified loess in order to provide theory basis and reference for using cement and silica powder to solidify loess.
出处
《科学技术与工程》
北大核心
2017年第23期287-291,共5页
Science Technology and Engineering
基金
宁夏自然科学基金(NZ1618)资助
关键词
硅微粉
固化黄土
无侧限抗压强度
最优配比
silica micro powder
solidified loess
unconfined compressive strength
optimum proportion
