摘要
为了给胶凝砂砾石配合比设计及优化提供参考,在单因素和多因素试验的基础上,应用响应面法分析了粉煤灰掺量、砂率和水胶比三因素及其交互作用对胶凝砂砾石28 d抗压强度的影响。结果表明:抗压强度指标对单因素的敏感程度依次为水胶比>粉煤灰掺量>砂率,双因素交互作用对抗压强度影响的显著程度依次为水胶比与砂率>水胶比与粉煤灰掺量>粉煤灰掺量与砂率;胶凝砂砾石最优粉煤灰掺量为50%、最优砂率为0.2、最优水胶比为1.0;采用响应面法可以建立较精确的多元回归模型,其对胶凝砂砾石配合比设计具有指导意义。
In order to provide a reference for the design and optimization of the mixture ratio of cemented sand and gravel,on the basis of sin⁃gle⁃factor and multi⁃factor experiments,the response surface methodology was used to analyze the effect of three factors including fly ash con⁃tent,sand ratio and water⁃binder ratio as well as their interaction on the 28 d compressive strength of cemented sand and gravel.The results show that the sensitivity of the single factor influencing the compressive strength index is water⁃binder ratio>fly ash content>sand ratio,and the significance of the two⁃factor interaction on the compressive strength is water⁃binder ratio and sand ratio>water⁃binder ratio and fly ash content>fly ash content and sand ratio.The optimal fly ash content of cemented sand gravel is 50%,the optimal sand ratio is 0.2,and the optimal water⁃binder ratio is 1.0.The response surface methodology can be used to establish a more accurate multiple regression model,which has guiding significance for the design of mixture ratio of cemented sand and gravel.
作者
陈守开
符永淇文
别亚静
CHEN Shoukai;FU Yongqiwen;BIE Yajing(School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Henan Key Laboratory of Water Environment Simulation and Treatment,Zhengzhou 450045,China;Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering,Zhengzhou 450045,China)
出处
《人民黄河》
CAS
北大核心
2020年第11期126-129,146,共5页
Yellow River
基金
国家重点研发计划项目(2018YFC0406803)。
关键词
胶凝砂砾石
响应面法
配合比设计
抗压强度
粉煤灰掺量
砂率
水胶比
cemented sand and gravel
response surface methodology
mixture ratio design
compressive strength
fly ash content
sand ra⁃tio
water⁃binder ratio
