水利水电技术（中英文）2025，Vol.56Issue(4)：211-224,14.DOI:10.13928/j.cnki.wrahe.2025.04.017
基于响应曲面法的水库底泥泡沫混凝土配合比优化研究
Optimization of mix ratio of reservoir sediment foamed concrete based on response surface method
摘要
Abstract
[Objective]To improve the high-value utilization of reservoir sediment,reservoir sediment foamed concrete was prepared by taking the water binder ratio,reservoir sediment mixing amount and foam mixing amount as variables.[Methods]The response surface method in the Design-Expert 13.0 software was used to optimize the mix ratio design,analyze the effects of variables on the compressive strength and thermal conductivity of the reservoir sediment foamed concrete.SEM and XRD were used to explore the microstructure of the reservoir sediment foamed concrete.[Results]The results show that the influence of each factor on the 28 d compressive strength of reservoir sediment foamed concrete is in the following order:water binder ratio＞foam content＞reservoir sediment content,and the thermal conductivity is in the following order:water binder ratio＞reservoir sediment content＞foam content.With the increase of water binder ratio,the compressive strength increases at first and then decreases,and the thermal conductivity gradually decreases.Increasing foam and reservoir sediment mixing result in a decrease in both compressive strength and thermal conductivity.Porosity showed a negative correlation with thermal conductivity,consistent with an exponential model.[Conclusion]The optimal mix ratio of reservoir sediment foamed concrete is 0.4,30％of reservoir sediment and 4.2％of foam content,and the 28 d compressive strength of the foamed concrete is 18.19 MPa,and the thermal conductivity is 0.121 4 W/(m·K),apparent density is 701.2 kg/m3.The analysis of microscopic result showed that the internal material of the specimen was tightly bound and the pores were uniformly distributed under the condition that the amount of reservoir sediment was 30％.Reservoir sediment foamed concrete provide a new way for the use of reservoir sediment in the field of construction materials.关键词
水库底泥/泡沫混凝土/响应曲面法/抗压强度/导热系数/影响因素/水胶比/SEM图Key words
reservoir sediment/foamed concrete/response surface method/compressive strength/thermal conductivity/influencing factors/water cement ratio/SEM image分类
土木建筑引用本文复制引用
李彦苍,乔威涛,宁钰,石华旺,冯胜雷,张晓雄,张春元,于铠源,朱骥,靳子栋..基于响应曲面法的水库底泥泡沫混凝土配合比优化研究[J].水利水电技术（中英文）,2025,56(4):211-224,14.基金项目
国家自然科学基金项目(52278171) （52278171）
河北省自然科学基金项目(E2020402079) （E2020402079）
河北工程大学大学生创新创业训练计划项目(X202410076013) （X202410076013）
