转运时间和高度差对输电工程混凝土性能的影响  

Influence of Transit Time and Height Difference on Concrete Performance in Power Transmission Engineering

作　　者：许涛 朱兆辉 陈诚 高建明[2] Xu Tao;Zhu Zhaohui;Chen Cheng

机构地区：[1]中国能源建设集团江苏省电力设计院有限公司,江苏南京211102 [2]东南大学材料科学与工程学院,江苏南京211189

出　　处：《江苏建材》2021年第3期32-35,共4页Jiangsu Building Materials

摘　　要：试验研究了常温常湿自然环境下转运时间和高度差对输电工程混凝土坍落度、抗压强度和孔结构的影响。结果表明,坍落度损失最高达到35%的混凝土相比对照组的混凝土28 d抗压强度低16%,小孔体积分数占比减少6%,大孔体积分数占比增加5%。The experiment studied the effects of transit time and height difference on the slump,compressive strength and pore structure of concrete in power transmission project under normal temperature and humidity.The results show that the concrete with a slump loss of more than 35%has 16%lower 28 d compressive strength than that of control group.The volume fraction of small pores decreases by 6%,and the volume fraction of macropores increases by 5%.

关 键 词：坍落度损失 抗压强度 运输时间 转运高度差 孔结构 

分 类 号：TU521.1[建筑科学—建筑技术科学]