脱硫石膏在干混砂浆中的应用  

Application of Desulfurization Gypsum on Dry Mixed Mortar

作　　者：董丽卿[1] 贾陆军[1] DONG Li-qing;JIA Lu-jun(School of Materials and Construction,Mianyang Polytechnic,Mianyang 621000,China)

机构地区：[1]绵阳职业技术学院材料与建造学院,绵阳621000

出　　处：《建材世界》2022年第2期10-13,共4页The World of Building Materials

摘　　要：将脱硫石膏应用于干混砂浆的制备中。以脱硫石膏取代部分水泥,再掺入粉煤灰、矿渣、纤维素醚和引气剂来优化配合比。结果表明,适宜的脱硫石膏有利于提升砂浆的抗压强度,但对工作性会造成不利影响。经优化试验后,得到脱硫石膏、粉煤灰和矿渣的最佳掺量分别为15 kg/t、20 kg/t和10 kg/t;纤维素醚、引气剂的最优掺量分别为5.5 g/t、8 g/t。Desulphurized gypsum was applied to prepare dry mixed mortar.Some of cement was replaced by desulfurized gypsum,and fly ash,slag,cellulose ether and air entraining agent were added to optimize the mixture proportion.The results showed that the appropriate desulfurized gypsum is beneficial to improve the compressive strength of mortar,but has a negative effect on workability.After the optimization test,the optimal dosages of desulfurization gypsum,fly ash and slag are 15%,20%and 10%,respectively.The optimal dosage of cellulose ether and air entraining agent is 5.5 g/t and 8 g/t respectively.

关 键 词：脱硫石膏 干混砂浆 工作性 抗压强度 

分 类 号：TU5[建筑科学—建筑技术科学]