Optimization of Grouting Material Mixture Ratio Based on Multi-Objective Optimization and Multi-Attribute Decision-Making

Luchang Xiong, Zhaoyang Zhang, Zhijun Wan, Yuan Zhang, Ziqi Wang and Jiakun Lv
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Luchang Xiong: School of Mines, China University of Mining & Technology, Xuzhou 221116, China
Zhaoyang Zhang: School of Mines, China University of Mining & Technology, Xuzhou 221116, China
Zhijun Wan: School of Mines, China University of Mining & Technology, Xuzhou 221116, China
Yuan Zhang: School of Mines, China University of Mining & Technology, Xuzhou 221116, China
Ziqi Wang: School of Mines, China University of Mining & Technology, Xuzhou 221116, China
Jiakun Lv: School of Mines, China University of Mining & Technology, Xuzhou 221116, China

Sustainability, 2021, vol. 14, issue 1, 1-14

Abstract: As a solid waste produced by coal combustion, fly ash will cause serious environmental pollution. However, it can be considered as a sustainable and renewable resource to replace partial cement in grouting materials. Fly ash grouting materials re-cement the broken rock mass and improve the mechanical properties of the original structure. It can reinforce the broken surrounding rock of mine roadway. The utilization of fly ash also reduces environmental pollution. Therefore, this paper establishes a new material mixture ratio optimization model to meet the requirement of material property through combining the methods of experimental design and numerical analysis. Based on the Box–Behnken design with 3 factors and 3 levels, a mathematical model is constructed to fit the nonlinear multiple regression functions between material properties and raw materials ratios. The influence of raw materials is analyzed on material properties (the material’s 7-day uniaxial compressive strength, initial setting time, and slurry viscosity). Then, 80 Pareto solutions are obtained through NASG-II algorithm which takes the regression functions as the objective functions for multi-objective optimization of the grouting material ratio. Finally, the best ratio solution of water-cement ratio—0.71, silica fume content—1.73%, and sodium silicate content—2.61% is obtained through the NNRP-TOPSIS method.

Keywords: grouting materials; ratio design; multi-objective optimization; multi-objective decision-making (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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