硫酸盐腐蚀粉煤灰混凝土后强度超声检测评定  

Assessment by Ultrasonic Testing of the Strength of Fly Ash Concrete Attacked by Sulfate

作　　者：秦国顺[1] 郑凤[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,江苏徐州221008

出　　处：《徐州工程学院学报（自然科学版）》2010年第2期33-36,共4页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(50878207)

摘　　要：为进一步研究混凝土受硫酸盐侵蚀的机理,以粉煤灰混凝土为研究对象,在高浓度硫酸盐溶液中进行加速腐蚀,并结合受硫酸盐腐蚀后混凝土强度变化规律,采用超声平测法对受腐蚀混凝土进行检测.研究结果表明,超声平测声速与损伤度之间有较好的回归关系.在此基础上,建立了腐蚀混凝土强度与声速之间的关系模型.Studying on fly ash concrete attacked in high concentration of sulfate liquor, with the reduction of the strength of attacked concrete, ultrasonic plane testing method was adopted to measure the thickness of attacked concrete. Based on the result of ultrasonic plane testing, the functional equation between strength of attacked fly ash concrete and velocity of ultrasonic was founded, which could be as one of the reference for testing strength by using ultrasonic testing method.

关 键 词：粉煤灰混凝土 硫酸盐腐蚀 强度 超声检测 

分 类 号：TU377.1[建筑科学—结构工程]