气压差变化及环氧树脂层对混凝土气体渗透性的影响  

Influence of Air Pressure Difference and Epoxy Resin Layer on Concrete Gas Permeability

作　　者：马方 MA Fang(China Railway Construction Group Co.,Ltd.,Beijing100043,China)

机构地区：[1]中铁建设集团有限公司,北京100043

出　　处：《施工技术（中英文）》2024年第8期126-130,共5页Construction Technology

基　　金：中铁建设集团有限公司科技研发计划项目(LX22-01A)。

摘　　要：基于Cembureau法测量不同气压差下混凝土气体渗透系数,研究气压差变化及环氧树脂层对混凝土气体渗透性的影响。研究结果表明,在一定范围内,混凝土气体渗透系数随气压差的增大呈减小趋势;环氧树脂层可有效减小混凝土气体渗透系数。Based on the Cembureau method,the gas permeability coefficient of concrete under different air pressure differences was measured,and the influence of air pressure difference and epoxy resin layer on the gas permeability of concrete was studied.The results show that the gas permeability coefficient of concrete decreases with the increase of air pressure difference within a certain range.Epoxy resin layer can effectively reduce the gas permeability coefficient of concrete.

关 键 词：混凝土 透气性 气压差 环氧树脂 试验 渗透系数 

分 类 号：TU502[建筑科学—建筑技术科学]