高性能混凝土的影响因素研究  

Influence factors of high performance concrete

作　　者：王军委[1,2] 李秋义[1,2] 齐秀山 岳公冰[1,2] 

机构地区：[1]蓝色经济区工程建设与安全协同创新中心,山东青岛266033 [2]青岛理工大学土木工程学院,山东青岛266033

出　　处：《混凝土》2015年第2期94-97,共4页Concrete

基　　金：国家"十一五"科技支撑计划重点课题(2006BAJ02B0504)

摘　　要：现代建筑工程对混凝土的要求日益提高,促进了高性能混凝土的发展。采用正交试验,探究了砂胶比、水胶比、硅灰掺量、钢纤维掺量以及砂粒径范围对高性能混凝土的影响。结果表明,随砂胶比的增大,高性能混凝土流动度减小,抗折、抗压强度均先增大后减小;随水胶比的增大,流动度增大,抗折、抗压强度都是先增加后降低;随硅灰掺量的增大,流动度及抗折、抗压强度都先增大后减小;随钢纤维掺量增大,流动度减小,抗折、抗压强度增加到一定程度后变化不大;砂粒径范围对流动度影响明显,对高性能混凝土后期强度影响不大。The increasing requirements for concrete in modern architectural engineering accelerate the development of high preformance concrete. Adopts orthogonal test in order to explore the effect to high performance concrete by these aspects including sand -binder ratio, water - binder ratio, the volume percentage of silica fume and steel fiber as well as the rang of sand diameter. The result shows, with the increase of the sand - binder ratio, the fluidity of HPC decreases while the compressive strength and flexural strength increase first,and then decrease ; with the increase of water - binder ratio, the fluidity of HPC increases while the strength first increases then decreases ; with the increase of the volume percentage of silica fume, the fluidity and strength first increase then decrease;with the increase of the volume percentage of steel fiber, the fluidity decreases while the strength change little when reaching to the critical point. The range of sand diameter has an obvious effect on the fluidity of HPC, but it has little influence on the long - term strength of HPC.

关 键 词：高性能混凝土 砂胶比 水胶比 钢纤维 流动度 

分 类 号：TU528.31[建筑科学—建筑技术科学]