摘要
基于响应面中的中心复合试验法,选择碱含量和石灰石粉含量作为配合比变量,制备碱激发矿渣-石粉水泥砂浆,并研究其不同龄期的力学强度。通过数据处理得到各变量与抗折、抗压强度的响应曲面,分析了各变量对碱激发矿渣-石灰石粉水泥砂浆强度的影响规律,建立了各龄期强度的响应面模型,为现场不同龄期的砂浆强度预测提供了科学的方法。结果表明,当Na2O含量为8.27%(质量分数,下同)、石灰石粉含量为14.02%时,各组分能充分发挥协同作用,保证良好的力学性能,且响应面法是一种有效优化碱激发水泥砂浆组分的方法。
Based on the central composite experimental method of response surface methodology,the alkali activated slag-limestone powder cement mortar was prepared by choosing alkali content and limestone powder content as variables,and the mechanical strength of different age was studied.The response surface of relation between each variable and the flexural,compressive strength was obtained through data processing.And the effects of various variables on strength of alkali activated slag-limestone powder cement mortar were analyzed.The response surface model of strength was established,and it can serve as a scientific method for predicting the strength of mortar at different ages in the field.The optimized results showed that when the Na 2O content is 8.27%and limestone powder content is 14.02%,the components can exert synergistic effect and ensure good mechanical properties.Therefore,the response surface methodology is an effective optimization method for alkali activated cement mortar.
作者
张兰芳
刘丽娜
曹胜
ZHANG Lanfang;LIU Lina;CAO Sheng(College of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2017年第24期15-19,共5页
Materials Reports
基金
国家自然科学基金青年基金(51502029)
重庆市科委基础科学与前沿技术研究项目(cstc2017jcyjAX0417)
重庆交通大学山区道路建设与技术维护重点实验室开放基金项目(cqmrcmlab07-04)
关键词
响应面法
碱激发
矿渣
石灰石粉
强度
response surface methodology
alkali activation
slag
limestone powder
strength
