硅酸盐通报2024，Vol.43Issue(4)：1427-1435,9.
基于响应曲面法的粉煤灰泡沫混凝土配合比优化
Optimization of Fly Ash Foam Concrete Mix Proportion Based on Response Surface Methodology
摘要
Abstract
To optimize the mix proportion of fly ash foam concrete,the influences of different foaming agent combinations and dosages on the strength of fly ash mortar was first compared.This comparison determined the dosage of activator.Subsequently,through single-factor experiments,the optimal ranges of fly ash,CaSt,and H2O2 content in foam concrete were determined.Finally,based on the Box-Benhnken response surface methodology,the effects of fly ash,CaSt,and H2O2 content on the compressive strength,dry density,and thermal conductivity of foam concrete were studied.A response surface model was established to explore the degree of influence of each factor and their interaction effects,aiming to obtain optimal mix proportion.The results show that a dual-doping combination of 4.5％(mass fraction,the same as below)Na2SO4 and 4.5％Ca(OH)2 significantly improves the performance of fly ash mortar.The interaction between fly ash and H2O2 content significantly influences compressive strength,CaSt and H2O2 content interaction significantly affects dry density,and the interaction between fly ash and CaSt content significantly influences thermal conductivity.When the water-to-binder ratio is 0.5,the fly ash content is 20.7％,the CaSt content is 1.9％,and the H2O2 content is 2.9％,an A07-grade foam concrete meeting the requirements is obtained.关键词
粉煤灰/激发剂/泡沫混凝土/响应曲面法/配合比Key words
fly ash/activator/foam concrete/response surface methodology/mix proportion分类
建筑与水利引用本文复制引用
曹启坤,景昊星,李豪..基于响应曲面法的粉煤灰泡沫混凝土配合比优化[J].硅酸盐通报,2024,43(4):1427-1435,9.基金项目
国家自然科学基金(51474045) （51474045）
