脱硫石膏对复合掺合料混凝土力学性能影响  

Effects of desulphurization gypsum on the composite mineral admixture of concrete 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：《混凝土》2013年第9期77-79,86,共4页Concrete

基　　金：河南省科技厅科技攻关项目(102102310371)

摘　　要：在普通混凝土中掺入矿渣微粉和粉煤灰得到复合掺合料混凝土的基础上,采用脱硫石膏替代粉煤灰,改变混凝土中胶凝材料SO3含量,研究脱硫石膏不同掺量对混凝土胶砂强度和混凝土强度的影响。试验表明:脱硫石膏掺入可改善混凝土早期和后期强度,并且脱硫石膏掺量(SO3含量)一定时,对提高复合掺合料混凝土早期和后期抗压强度较为显著。Composite mineral admixture of concrete is made by adding slag and coal ash.This research is conducted by using of desulphurization gypsum instead of coal ash to changing the content of cementitious material SO3 in concrete, find out the effects on the mortar strength and compressive strength caused by different desulphurization gypsum amounts.The tests show that by adding desulphurization gypsum the compressive strength could be improved at both early and later stages.When the desulphurization gypsum （ SO3 content） takes up to a certain amount, the improvements of compressive strength at early and later stages are rather significant.

关 键 词：脱硫石膏 掺合料 混凝土 强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]