钢纤维自密实混凝土抗冻性能试验研究  

Research of steel fiber self-compacting concrete frost resistance experiment

作　　者：赵燕茹[1] 范晓奇 高明宝[1] 时金娜[1] 

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051

出　　处：《混凝土》2016年第12期126-129,133,共5页Concrete

基　　金：国家自然科学基金项目(11362013)

摘　　要：通过快速冻融试验,研究了不同冻融次数下钢纤维自密实混凝土的冻融破坏特征,分析了不同钢纤维掺量(体积掺量为0.2%、0.4%、0.6%)不同基体强度(C30、C40、C50)条件下,自密实混凝土的质量损失、动弹模量以及抗压强度等变化规律。研究结果表明,在冻融循环试验中不同钢纤维掺量,不同钢纤维掺量、不同强度的自密实混凝土表现出的抗冻性大小依次为0.6%>0.4%>0.2%,C50>C40>C30。掺入钢纤维和增加基体强度可以有效提高自密实混凝土的抗冻性能。The freeze-thaw damage characteristics of steel fiber reinforced concrete under different freezing and thawing cycles were studied by means of rapid freezing thawing test.The change law of C40, C50 C30 was analyzed.The results show that the frost resistance of the self compacting concrete with different strength of the concrete in freezing thawing cycles is 0.6%〉0.4%〉0.2%, C50〉C40〉C30.The frost resistance of self compacting concrete can be effectively improved by the incorporation of steel fiber and the increase of matrix strength.

关 键 词：钢纤维自密实混凝土 冻融循环 抗冻性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]