偏高岭土对水泥土强度影响的试验研究  

Effect of Metakaolin on Strength of Cemented Soil

作　　者：王林浩[1,2] 徐晓东[1] 刘剑平[1] 白晓红[1] 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024 [2]太原科技大学交通与物流学院,山西太原030024

出　　处：《非金属矿》2016年第2期59-61,共3页Non-Metallic Mines

摘　　要：通过对7 d、14 d、28 d龄期下5种不同偏高岭土掺量的水泥土试块进行无侧限抗压强度测试,分析了山西煤系偏高岭土对水泥砂土抗压强度的影响规律,并借助水泥活性矿物掺料增强效应统计模型分析了水泥土强度增强效应因子变化规律。结果表明:在一定掺量范围内,偏高岭土可部分替代水泥,以减少环境污染,提高水泥土强度;当胶结材料总量为15%时,3%的偏高岭土掺量最有利于水泥土强度提高;偏高岭土对水泥土早期强度的提高更明显,对后期强度影响较弱。In order to study the effect of cemented soil by 7 d, 14 d and 28 d ages with five contents of metakaolin, a series of unconfined compressive strength are conducted on the cemented soil samples. The enhancement effects of cemented soil strength are discussed by cement active mineral admixtures enhancing effect statistical model. The test results show that metakaolin can partly replace cement to reduce environmental pollution and improve the strength of cemented soil in certain dosage range. 3% metakaolin is best for strength of cemented soil when the content of total cementitious material is 15%. Metakaolin is more helpful for the early strength of cemented soil.

关 键 词：偏高岭土 水泥土 无侧限抗压强度 增强效应 

分 类 号：TU411.6[建筑科学—岩土工程] TD985[建筑科学—土工工程]