活性粉末混凝土力学性能及冻融性能研究  

On the Mechanical Properties and Freezing-thawing Resistance of Reactive Powder Concrete

作　　者：鞠彦忠[1] 王德弘[1] 单明[2] 

机构地区：[1]东北电力大学建筑工程学院,吉林省吉林132012 [2]南京供电公司,江苏省南京210019

出　　处：《实验力学》2012年第2期214-220,共7页Journal of Experimental Mechanics

基　　金：国家自然科学基金(50878040);吉林省科技发展计划项目(20060506);吉林省教育厅"十一五"科学技术研究项目(200843)

摘　　要：活性粉末混凝土具有优异的力学性能和耐久性,本文按照正交设计方法设计了9组不同配合比的活性粉末混凝土,通过试验研究了其基本力学性能及抗冻融性能,分析了水胶比、硅灰水泥比和钢纤维含量等因素对活性粉末混凝土力学性能及抗冻融性能的影响规律。研究表明,水胶比是影响活性粉末混凝土力学性能及抗冻融性能最主要的因素,钢纤维含量对活性粉末混凝土抗折和劈裂强度影响较为显著,对其抗压强度和抗冻融性能的影响不明显。本文根据试件破坏的现象对钢纤维作用的机理做了初步的探讨。Reactive Powder Concrete （RPC） has superior mechanical properties and high durability. According to the orthogonal design method, nine mix proportions of RPC were designed, and mechanical properties and freezing-thawing resistance of RPC were experimentally investigated. The influence of the water-binder ratio, cement- silica ratio and the steel fiber content on mechanical properties and freezing- thawing resistance of RPC was analyzed. Results indicate, among these factors effecting mechanical properties and freezing-thawing resistance of RPC, the water-binder ratio is uppermost, however, the influence of steel fiber content on flexural strength and splitting tensile of RPC is obvious, and its influence on compressive strength and thawing resistance of RPC are insignificant. According to the destruction phenomenon of specimen, the acting mechanism of steel fiber is preliminarily explored in this paper.

关 键 词：活性粉末混凝土 力学性能 抗冻融性能 水胶比 硅灰水泥比 钢纤维含量 

分 类 号：TU528.31[建筑科学—建筑技术科学] TU528.572