基于“CAD法”的气孔结构对道面混凝土盐冻耐久性影响研究  

Research on the influence of pore structure on impact salt durability of pavement concrete base on“CAD”

作　　者：郭春鹏 张震 王思扬[1] GUO Chunpeng;ZHANG Zhen;WANG Siyang(Department of Airfield Engineering and Support,Air Force Logistics College,Xuzhou 221000,China)

机构地区：[1]空军勤务学院机场工程与保障系,江苏徐州221000

出　　处：《混凝土》2019年第1期57-60,64,共5页Concrete

基　　金：国家自然科学基金项目(51478462;51508565)

摘　　要：利用"CAD法"对不同组混凝土试件的切片进行分析。通过研究发现,混凝土试件的孔结构是影响混凝土盐冻耐久性的重要因素。平均气孔孔径更适用寻找最佳含气量,气孔分布情况可以表征引气效果的好坏,孔间系数能直接反应混凝土的盐冻耐久性,随着孔间系数的增大,混凝土的盐冻剥蚀量也逐步增加,其抗盐冻耐久性能降低。It analyzes all the different groups of samples of concrete by “CAD”.It draws a conclusion that pore structure is the important factor which influences freeze-deicing salt durability of concrete,the average stomatal aperture can be used to find out the best air content and air void spacing factor can directly present deicer-frost resistance durability of concrete.With increasing air void spacing factor,scaled mass is also increased,the resistance to salt and cold endurance decreased.

关 键 词：孔结构 道面混凝土 盐冻耐久性 

分 类 号：TU528.01[建筑科学—建筑技术科学]