采用响应曲面优化法优化水泥基注浆材料的强度与耐硫酸盐腐蚀的试验研究

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英文篇名：Test research on optimizing the strength of cement based grouting material with response surface optimization and sulfate resistance 作者：周茗如 ; 曹润倬 ; 周群 ; 何勇 英文作者：Zhou Mingru;Cao Runzhuo;Zhou Qun;He Yong;Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology;Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education,Lanzhou University of Technology; 关键词：注浆材料 ; 响应曲面 ; 析水率 ; 抗压强度 ; 耐腐蚀性 英文关键词：grouting material;;response surface;;drainage rate;;compressive strength;;corrosion resistance 中文刊名：JZKX 英文刊名：Building Science 机构：兰州理工大学甘肃省土木工程防灾减灾重点实验室;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; 出版日期：2019-01-20 出版单位：建筑科学 年：2019 期：v.35;No.258 基金：国家自然科学基金资助项目(51468039);; 甘肃省建设厅建设科技攻关项目(JK2014-9) 语种：中文; 页：JZKX201901017 页数：7 CN：01 ISSN：11-1962/TU 分类号：105-111

摘要

采用响应曲面优化法优化湿陷性黄土注浆中的注浆材料并进行耐硫酸盐腐蚀性研究。以水灰比、粉煤灰等为考虑因素,2h析水率、3d及28d抗压强度为响应值,建立模型,并对浆液结石体进行耐硫酸盐腐蚀性及微观试验。结果表明:水灰比0. 8、粉煤灰掺量40%、无水硫酸钠掺量3. 11%、膨润土掺量4%,此时综合性能最佳,结石体3d、28d抗压强度分别为9. 5MPa和24. 7MPa,与预测值(8. 6MPa、23. 5MPa)相接近。响应曲面优化法能很好地预测试验结果,优化后的浆液结石体比纯水泥浆液结石体有更好的耐硫酸盐腐蚀性能。
        Response surface design is used to optimize grouting materials in collapsible loess grouting process and to study corrosion resistance. With water cement ratio,fly ash,anhydrous sodium sulfate and bentonite as consideration,the response surface method is adopted to establish a mathematical model with 2 h water rate,3 d and 28 d compressive strength as the response value,the slurry body is subjected to sulfate corrosion tests and microscopic tests. The results show that the ratio of water cement ratio 0. 8,fly ash content 40%,anhydrous sodium sulfate content 3. 11% and bentonite content 4% is the best proportion of cement based comprehensive properties,and the compressive strength of 3 d and 28 d is 9. 5 MPa and 24. 7 MPa respectively,which is close to the predicted values( 3 d,28 d compressive strength is 8. 6 MPa,23. 5 MPa),the test results can be well predicted through the response surface optimization. The corrosion resistance test and SEM show that the corrosion resistance of slurry stone body optomized by response surface method is better than that of pure cement slurry body.

引文

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