摘要
根据《轻骨料混凝土技术规程》JGJ51-2002,设计改性轻骨料混凝土基准配合比。在此基础上单掺钢纤维,观察分析表观湿密度、抗压抗折强度(7 d、28 d)、压折比(7 d、28 d)的变化规律。结果显示:湿表观密度和体积掺量呈线性上升变化;钢纤维能够有效增加混凝土韧性和弯折强度,同时对抗压强度几乎没有影响。
According to the ＂Lightweight Aggregate Concrete＇s Technical Regulations＂ JGJ51-2002,the optimum reference proportion of modified lightweight aggregate concrete is designed. On the basis of adding steel fiber separately, making analysis of apparent wet density、compressive and flexural strength（7 d and 28 d）、press-bend ratio. The results show there is a linear rise of wet apparent density and volume proportion of steel fiber; steel fiber could effectively increase the toughness and bending strength; but it does no effect to compressive strength at the same time.
作者
程林枫
程承
CHENG Lin-feng;CHENG Cheng(Henan Branch of Administration South-to-North Water Diversion Middle Route Project,Zhengzhou Henan 450000 China;Civil Engineering College,Southwest Forestry University,Kunming Yunnan 650224 China)
出处
《江苏建筑》
2018年第3期91-93,共3页
Jiangsu Construction
基金
西南林业大学科技创新基金二级项目(编号1212)
西南林业大学森林工程重点学科及结构工程试验示范中心共同资助
关键词
钢纤维改性
湿密度
力学性能
steel fiber modified
wet density
mechanical properties
