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基于湿陷性黄土地区水泥基浆液优化及耐腐蚀性研究

第37卷第1期 硅 酸 盐 通 报 Vol .37 No .1 2018年1月 BULLETIN OF THE CHINESE CERAMIC SOCIETY January ,2018

基于湿陷性黄土地区水泥基浆液优化

及耐腐蚀性研究

周茗如1,2,曹润倬1,周 群1,彭新新1,路承功1

(1.兰州理工大学甘肃省土木工程防灾减灾重点实验室,兰州 730050;

2.兰州理工大学西部土木工程防灾减灾教育部工程研究中心,兰州 730050)

摘要:为解决湿陷性黄土注浆过程中注浆材料的优选问题,设计了五因素四水平的正交试验方案,系统地研究了水灰比、无水硫酸钠、膨润土、粉煤灰和熟石灰等几种因素对注浆材料性能的影响。并对四种不同配比的浆液结石体进行了耐腐蚀性及微观试验。结果表明:水灰比对浆液初始黏度、析水率,结石体抗压强度的影响最为显著,对浆液性能起决定性作用,进而给出了适宜于黄土地区注浆的最优配比;通过耐腐蚀试验得出,优化浆液结石体比纯水泥浆液结石体的密实度更高,耐腐蚀性更好。

关键词:注浆材料;黏度;析水率;抗压强度;耐腐蚀性

中图分类号:TU 448 文献标识码:A 文章编号:1001-1625(2018)01-0251-09

ExperimentalStudyonCement-basedSlurryOptimizationandCorrosionResistanceofCollapsibleLoessAreas

ZHOUMing-ru1,2,CAORun-zhuo1,ZHOUQun1,PENGXin-xin1,LUCheng-gong1

(1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province ,

Lanzhou University of Technology ,Lanzhou 730050,China ;

2.Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education ,Lanzhou University of Technology ,Lanzhou 730050,China )

Abstract:In order to solve the problem that the excellent selection of grouting materials were in the process of the collapsible loess ,a five -factor and four -level orthogonal test scheme was designed .The effect of anhydrous sodium surfute ,bentonite ,fly ash and hydrate lime on the properties of grouting material was systematically studied .The corrosion resistance and micro experiments were performed on four different proportions .The result showes that comparing to water cement ratio on the initial discosity and drainage rate ,the stone body 's impact of compressive strength is most pronounced ,and it is decisive for the performance of the slurry ,so obtained the otimal formula of grouting that is suitable for the losse region .The optimized slurry lithosomes are more dense than pure cement slurry ,and they are more resistant to corrosion .Keywords:grouting material ;viscosity ;drainage rate ;compressive strength ;corrosion resistance

基金项目:国家自然科学基金(51468039)

作者简介:周茗如(1962-),男,教授.主要从事土木工程材料的研究.

通讯作者:曹润倬,硕士研究生.1 引 言

由于我国西部地区存在大面积湿陷性黄土,地基和路基的不均匀沉降时常发生,给国家造成了严重的经万方数据

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