复合矿物膨胀剂对混凝土性能的影响  

Effect of compound mineral expansion agent on concrete properties

作　　者：罗晶[1] 丁锐[1] 张兵 朱会荣[1] LUO Jing;DING Rui;ZHANG Bing;ZHU Hui-rong(School of materials science and engineering,Jilin Jianzhu university,Changchun 130018,China;Jilin Huishi new building materials Co.,Ltd.,Changchun 130018,China)

机构地区：[1]吉林建筑大学材料科学与工程学院,长春130018 [2]吉林会师新型建材有限公司,长春130018

出　　处：《吉林建筑大学学报》2024年第6期57-61,共5页Journal of Jilin Jianzhu University

基　　金：吉林省教育厅科学研究项目(JJKH20230326KJ).

摘　　要：为提高固废材料的综合利用率,补偿混凝土的收缩裂缝,分析复合矿物膨胀剂对商品混凝土力学性能和收缩性能的影响。经研究,得出掺入6%的矿物膨胀剂时2 h坍落度大于160 mm,满足混凝土泵送工艺要求,当28 d时抗压强度达到37.6 MPa,还可以使混凝土的体积收缩得到及时补偿,这为进一步改善和提高混凝土体积的稳定性和耐久性提供相应的研究数据。In order to improve the comprehensive utilization of solid waste materials and compensate the shrinkage cracks of concrete,the effects of compound mineral expansion agents on the mechanical properties and shrinkage properties of commercial concrete were investigated.The results show that the 2 h slump of 6%mineral expansion agent is greater than 160 mm,which meets the requirements of the concrete pumping process and the compressive strength of 28 d reaches 37.6 MPa,which can also make the volume shrinkage of concrete compensated in time.This provides research data for further improving and enhancing the volume stability and durability of concrete.

关 键 词：膨胀剂 磷石膏 抗压强度 收缩量 

分 类 号：TU528.042[建筑科学—建筑技术科学]