过硫磷石膏矿渣水泥混凝土耗酸量控制方法研究  

Study of Control Methods for the Acid Consumption of the Excess-sulfate Phosphogypsum Slag Cement Concrete

作　　者：林宗寿[1] 吕治江[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070

出　　处：《建材世界》2015年第3期20-23,52,共5页The World of Building Materials

基　　金：国家高技术研究发展计划(863)项目(2012AA06A112)

摘　　要：过硫磷石膏矿渣水泥混凝土中硅酸盐水泥的掺量对其性能影响极大,掺量过高后期强度将大幅度下降,掺量过低早期强度将会很低。该文通过试验发现：控制过硫磷石膏矿渣水泥混凝土中PSC浆的耗酸量,可以有效控制过硫磷石膏矿渣水泥混凝土中硅酸盐水泥的适宜配比,显著提高过硫磷石膏矿渣水泥混凝土的性能。过硫磷石膏矿渣水泥混凝土中的PSC浆滤液耗酸量应控制0.10~0.25mmol/g之间。The mixing amount of the Portland cement had great impact on the performance of the Excess-Sulfate- phosphogypsum slag cement concrete. High addition of Portland cement leads to a significant drop of the later strength of the Excess-Sulfate phosphogypsum slag cement conerete~ low addition of Portland cement leads to a significant drop of the early strength of the Excess-Sulfate phosphogypsum slag cement concrete. This study explored that controlling the acid consumption of PSC pulp in the Excess-Sulfate phosphogypsum slag cement concrete could effectively control the proportion of the Portland cement in the Excess-Sulfate pbosphogypsum slag cement concrete at a suitable level, and thus improve the performance of the Excess-Sulfate phosphogypsum slag cement concrete. The filtrate acid con- sumption of PSC pulp in the Exces-Sulfate phosphogypsum slag cement concrete should be controlled between 0. 10 mmol/g and 0. 25 mmol/g.

关 键 词：过硫磷石膏矿渣水泥混凝土 滤液耗酸量 控制方法 

分 类 号：TU528[建筑科学—建筑技术科学]