轻骨料混凝土抗冻耐久性试验研究  

AN EXPERIMENTAL STUDY ON FROST RESISTANCE DURABILITY OF LIGHTWEIGHT AGGREGATE CONCRETE

作　　者：霍俊芳[1] 曹喜[1] 刘大鹏[1] 

机构地区：[1]内蒙古工业大学建工学院,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2008年第4期299-303,共5页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古自治区自然科学基金资助项目(200711020715);十一五国家科技支撑计划项目资助(2006BAJ05B06-06)

摘　　要：通过在轻骨料混凝土中掺入钢纤维、聚丙烯纤维,研究轻骨料混凝土在冻融、冻融-硫酸盐复合作用下的抗冻耐久性.研究发现,轻骨料混凝土在硫酸钠-冻融的复合损伤明显大于单一冻融损伤.混合纤维可以减缓轻骨料混凝土的强度损失.掺入硅灰和粉煤灰,纤维轻骨料混凝土的抗冻耐久性得到显著改善.Frost resistance durability of lightweight aggregate concrete （LWAC） is studied under freezing-thawing action simply with water mixed in it and that with salt solution （5% Na2SO4） mixed in it. Results show that the durability deteriorates more severely under the latter action than under the former. Steel fibers and polypropylene fibers are added to LWAC so as to reinforce the material. This measure makes the strength loss of the material get lessened and its frost resistance durability improved. When pulverized fuel ash and silica fume are added ,the frost resistance durability of fiber- reinforced LWAC finds remarkable improvement.

关 键 词：轻骨料混凝土 纤维 抗冻耐久性 

分 类 号：TU528.2[建筑科学—建筑技术科学]