利用真空脱水工艺提高水工混凝土抗裂性  

Successful application of a vacuum dewatering process to increasing crack resistance of hydraulic concrete

作　　者：张燕迟[1] 欧阳幼玲[1] 

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029

出　　处：《水利水运工程学报》2012年第3期32-36,共5页Hydro-Science and Engineering

基　　金：十一五科技支撑计划项目(2008BAB29B04)

摘　　要：为探讨真空脱水工艺对水工混凝土抗裂性能的影响,研究分析了混凝土经真空脱水工艺处理后的水胶比、孔结构、干缩变形和强度的变化,以及高抗冲磨性能真空混凝土配合比特点对降低混凝土放热的作用,说明了真空混凝土的脱水密实作用可明显增强水工混凝土抵抗表层变形开裂的能力.工程实例表明真空脱水工艺对水工混凝土表面裂缝具有明显控制作用.In order to discuss the influence of a vacuum dewatering process on crack resistance property of hydraulic concrete,the changes of water-binder ratio,pore microstructure,drying shrinkage and strength of concrete made by the vacuum dewatering process are studied,and the role of the mixture of high abrasion resistance property of concrete made by the vacuum dewatering process in decreasing concrete heat generation is analyzed.The research results show that the crack resistance capability of hydraulic concrete surface consolidated by the vacuum dewatering process is reinforced.Practical engineering indicates that the vacuum dewatering process is obviously effective for crack resistance of hydraulic concrete surface.

关 键 词：水工混凝土 真空脱水 抗裂 

分 类 号：TU528.01[建筑科学—建筑技术科学]