Development of two new anti-washout grouting materials using multi-way ANOVA in conjunction with grey relational analysis

被引：67

作者：

Cui, Wei ^{[1
]}

Huang, Junyan ^{[1
]}

Song, Huifang ^{[1
]}

Xiao, Ming ^{[2
]}

机构：

[1] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300354, Peoples R China

[2] Penn State Univ, Coll Engn, University Pk, PA 16801 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 156卷

基金：

中国国家自然科学基金;

关键词：

Anti-washout grout; Multi-way ANOVA; Grey relational analysis; Cement based; Accelerating agent; Flocculating agent; RHEOLOGICAL PROPERTIES; CEMENT GROUTS; MECHANICAL-PROPERTIES; SILICA SOL; DESIGN; ASH; RESISTANCE; ADMIXTURE; CHITOSAN; BEHAVIOR;

D O I：

10.1016/j.conbuildmat.2017.08.126

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Two new types of anti-washout cementitious grouts, named "AWG-1" and "AWG-2" (anti-washout grout) respectively, have been developed for different geological conditions. Separate addition tests were performed to study the effects of certain accelerating agents and flocculating agents on the cement based grout comparatively. Based on the results of separate addition tests, two new formulations were proposed for further investigations. Both formulations involved three admixtures respectively. Grey relational analysis, coupled with Taguchi design of the combined addition experiment, was performed to determine the optimal admixture dosages for simultaneously achieving the desired yield stress and plastic viscosity of the cementitious grout. Multi-way ANOVA was employed to identify the insignificant factors (p > 0.05) which could be used to adjust the setting time and the compressive strength while not compromising the optimum rheological properties. The optimization algorithm was thus developed to achieve a faster set time, higher durability but lower workability for AWG-1, as well as sufficient washout resistance for both formulations according to their geotechnical applications. In addition, AWG-1 requires a high-pressure grout pumping system. Finally, the washout resistance of the newly developed grouts was validated by anti-washout simulation experiments. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：184 / 198

页数：15

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