绿色生态混凝土降碱试验研究  

RESEARCH ON DECREASING ALKALINITY OF GREEN ECOLOGICAL CONCRETE

作　　者：高婷[1] 尹健[1] 桑正辉 张贵[1] 李晟[1] 

机构地区：[1]中南林业科技大学土木工程与力学学院,长沙410004

出　　处：《建筑技术》2017年第1期10-12,共3页Architecture Technology

基　　金：湖南省科技厅重点项目(2013FJ2002);中南林业科技大学研究生科技创新基金资助项目(CX2016B24)

摘　　要：通过测定绿色生态混凝土净浆的p H值,研究了水泥品种、矿物掺合料种类及掺量、酸性改性材料等因素对绿色生态混凝土p H值的影响。结果表明,硫铝酸盐水泥和铝酸盐水泥p H值均低于普通硅酸盐水泥,p H值降低1~2个单位。掺入粉煤灰或矿粉均能降低绿色生态混凝土的p H值,且随着粉煤灰或矿粉掺量增加p H值逐渐降低。加入少量酸性改性材料后,早期p H值降低不明显,后期约降低0.2个单位。Based on the determination of green ecological concrete paste pH , the effects of cement variety, mineral admixture type and dosage, acid modified materials and other factors on the green ecological concrete pH are researched. The results show that the sulphoaluminate cements and aluminate cements pH were lower than ordinary portland cement, pH decreased by 1-2 units. The incorporation of fly ash or slag can reduce the pH of green ecological concrete. And with the increase of fly ash or slag content, the pH decreased gradually. The early decrease of pH is not obvious after adding a small amount of acid modified materials , but the oH decreased about 0.2 units later.

关 键 词：绿色生态混凝土 降碱 矿物掺合料 改性材料 

分 类 号：TU528.01[建筑科学—建筑技术科学]