掺硅粉对普通硅酸盐水泥-硫铝酸盐水泥复合胶凝体系混凝土耐久性的影响研究  

Research on the Effect of Mixing Silicon Powder on the Durability of Concretein Composite Cementitious System of Ordinary Portland Cement and Sulfoaluminate Cement

作　　者：宗翔[1] 顾宏华 ZONG Xiang;GU Honghua(School of Civil Engineering and Architecture,Anhui University of Science&Technology,Huainan Anhui 232000,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232000

出　　处：《长春工程学院学报（自然科学版）》2024年第1期7-11,共5页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：国家自然科学基金(51674006)。

摘　　要：通过在m(普通硅酸盐水泥)∶m(硫铝酸盐水泥)=3∶7的复合胶凝体系(P·O-SAC)中掺入不同比例的硅粉,对复合胶凝体系的水化过程和混凝土的抗压强度、抗劈裂强度以及抗氯离子侵蚀进行试验,改善多元复合胶凝体系混凝土的耐久性能。研究表明:硅粉的掺入量越多,复合水泥的初凝和终凝时间越长;掺入适量的硅粉能有效提高P·O-SAC混凝土的抗压强度,改善P·O-SAC混凝土后期强度的发展;硅粉能提升P·O-SAC混凝土抗氯盐侵蚀的能力。By mixing different proportions of silicon powder to a composite cementitious system(P·O-SAC)with a ratio of m(the ordinary Portland cement)to m(the sulfoaluminate cement)is 3∶7,the hydration process of the composite cementitious system,as well as the compressive strength,splitting strength,and chloride ion corrosion resistance of the concrete,are tested to improve the durability of the concrete in the multi-component composite cementitious system.The research shows that the more silicon powder is mixed,the longer the initial and final setting times of composite cement.Mixing an appropriate amount of silicon powder can effectively improve the compressive strength of P·O-SAC concrete and the development of its later strength.Silicon powder can enhance the resistance of P·O-SAC concrete to chloride corrosion.

关 键 词：复合胶凝体系 抗压强度 劈裂抗拉强度 抗氯离子侵蚀 

分 类 号：TU528[建筑科学—建筑技术科学]