基于响应面法的地聚物改良炭质泥岩配比多目标优化设计
Multi-objective optimization design of geopolymer improved carbonaceous mudstone ratios based on response surface method
摘要
Abstract
Aiming at the problem of poor strength and durability of carbonaceous mudstone fillers,the improvement of carbonaceous mudstone was studied by water-glass-inspired slag-based aggregates.Based on the response surface method,the effects of slag doping,water glass modulus and water glass doping and their interactions on the 7 d,28 d unconfined compressive strength and permeability coefficients of the geopolymer improved carbonaceous mudstone(GICM)were analyzed to clarify the optimal material ratios of the GICM.The evolution of the mineral compositions and microstructures of the GICM before and after the improvement were analyzed using XRD and scanning electron microscopy to reveal its micro-action mechanism.The results show that the influence of the factors has an effect on the 7 d,28 d unconfined compressive strength and permeability coefficient of GICM.The degree of influence decreases in the order of slag doping,water glass doping,and water glass modulus.The interaction between the factors is mainly dominated by slag doping and water glass doping,and there is no significant interaction between the remaining factors.The optimal ratio of GICM obtained by combining the multi-objective satisfaction function with the entropy weighted TOPSIS method is 20%of slag doping,1.47 of water glass modulus and 7.6%of water glass doping.The dissolution and polycondensation reaction of slag-based aggregates generates gel-like substances such as C-S-H,C-A-S-H,etc.,which can effectively improve the internal microstructure of carbonaceous mudstone and significantly improve its strength and durability by mutual cementation to form a dense flocculent structure.Compared with the unimproved carbonaceous mudstone,the disintegration resistance and resistance to dry and wet cyclic effects of GICM are significantly improved.The results can provide reference for the treatment and long-term stability of carbonaceous mudstone roadbed diseases.关键词
地聚物/炭质泥岩/响应面法/最优配比/微观机制Key words
geopolymer/carbonaceous mudstone/response surface method/optimal ratio/microscopic mechanism分类
建筑与水利引用本文复制引用
曾铃,王心畅,查焕奕,吴帅,唐静,陈镜丞..基于响应面法的地聚物改良炭质泥岩配比多目标优化设计[J].中南大学学报（自然科学版）,2026,57(2):785-802,18.基金项目
国家自然科学基金资助项目(52378440,52408458) （52378440,52408458）
交通运输行业重点科技计划项目(2022-MS1-032) （2022-MS1-032）
湖南省自然科学基金资助项目(2023JJ10045) （2023JJ10045）
湖南省自然科学基金青年科学基金资助项目(2025JJ60344) （2025JJ60344）
长沙理工大学研究生科研创新项目(CLKYCX24012)(Projects(52378440,52408458)supported by the National Natural Science Foundation of China （CLKYCX24012）
Project(2022-MS1-032)supported by the Key Science and Technology Program in the Transportation Industry （2022-MS1-032）
Project(2023JJ10045)supported by the Natural Science Foundation of Hunan Province （2023JJ10045）
Project(2025JJ60344)supported by the Natural Science Foundation of Hunan Province Youth Science Fund （2025JJ60344）
Project(CLKYCX24012)supported by the Postgraduate Scientific Research Innovation Project of Changsha University of Science and Technology) （CLKYCX24012）
