摘要
抗冻能力是评价水泥等化学材料加固黄土耐久性的关键指标之一。就水泥、新型高分子材料SH固化黄土的抗冻特性及增强措施进行了室内冻融循环试验。结果表明,水泥黄土抗冻性较差。水泥黄土经25次冻融循环后强度损失超过30%,而SH加固黄土后抗冻性较好,25次冻融强度损失率17%。掺适当少量添加剂后可提高水泥、高分子材料固化黄土的抗冻能力,试验用冼衣粉的效果较其它添加剂好。建议进一步开展添加剂与水泥、高分子材料加固黄土抗冻作用效果的研究。
The resistance to freezing and thawing is a key index in evaluating the durability of loess-cement and loess solidified by polymer. The freezing and thawing test is used in this paper, the properties of resistance to freezing and thawing and improving methods are made at lab. The results indicate that the resistance to freezing and thawing of loess-cement is low, and the strength loss may reach more than 30% after 25 times of freezing and thawing, and the strength loss of loess solidified by polymer is only 17 %. The resistance to freezing and thawing may improve though applied good admixture with good quantity. The effect of washing powder is better than the other. It is suggested that the study of admixture effect on the durability of loess-cement and loess solidified by polymer should be made in the future.
出处
《西部探矿工程》
CAS
2008年第12期51-53,56,共4页
West-China Exploration Engineering
基金
山西高校科技研究开发项目(2006110010)
关键词
黄土加固
耐久性
冻融循环
添加剂
强度损失
loess solidity
durability
freezing and thawing
admixture
strength loss
