脱硫石膏对高性能混凝土力学性能的影响  

The Influence of Desulphurization Gypsum on the HPC Mechanical Properties

作　　者：钱大行[1] 孙犁[1] 

机构地区：[1]洛阳理工学院土木工程系,河南洛阳471023

出　　处：《施工技术》2014年第3期35-37,共3页Construction Technology

基　　金：河南省科技厅科技攻关项目:脱硫石膏在高性能混凝土应用研究(102102310371)

摘　　要：在普通混凝土中，采用大掺量磨细矿渣和粉煤灰后得到高性能混凝土的基础上，采用脱硫石膏替代粉煤灰，研究不同脱硫石膏掺量对混凝土胶砂强度和混凝土强度的影响。试验表明，掺人脱硫石膏可改善？昆凝土早期强度和后期强度，并且脱硫石膏掺量占掺和料总量的8％～9％，即胶凝材料中SO3含量在2．7％～2．9％时，高性能混凝土早期和后期抗压强度提高较明显。High performance concrete （HPC） is made by adding large amount of grinded slag and coal ash. This research is conducted by using desulphurization gypsum instead of coal ash to find out the influence on the mortar strength and compressive strength caused by different desulphurization gypsum amounts. The tests show that the compressive strength can be improved at both early and later stages by adding desulphurization gypsum. When the desulphurization gypsum takes up to 8% - 9% of the total admixture, i.e. SO3 within 2.7% -2.9% , the improvements of compressive strength at early and later stages are rather significant.

关 键 词：混凝土 脱硫石膏 胶砂强度 抗压强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]