混凝土抗冻性与水泥用量关系的试验研究  

Relationship between Cement Content and Frost Resistance of Concrete

作　　者：程云虹[1] 陈东华[1] 王元[2] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]辽宁省建设科学研究院建材分院,辽宁沈阳110005

出　　处：《建筑材料学报》2011年第4期536-540,559,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(50878064)

摘　　要：为找出满足混凝土不同抗冻性要求的最小水泥用量,设计了掺与不掺引气剂的混凝土各6组进行冻融循环试验.结果表明:在水胶比相同的情况下,随着水泥用量的增加,混凝土抗冻性能提高;粉煤灰及引气剂能明显改善混凝土的抗冻性能.针对不同情况,分别给出了混凝土中水泥用量最低值.To identify the minimum cement content with the different frost resistance of concrete,12 groups of concrete were prepared,that is,6 groups of concrete without air entraining admixture,and 6 groups of concrete with air entraining admixture.The freeze-thaw tests have been carried out.Test results show that at the same mw/mb,with the increase in cement content,frost resistance of concrete improves,fly ash can improve the frost resistance of concrete obviously,and air entraining admixture can improve the frost resistance of concrete obviously too.For different situations,the minimum cement content in concrete is given respectively.

关 键 词：混凝土 抗冻性 水泥用量 水胶比 引气剂 粉煤灰 

分 类 号：TU528.01[建筑科学—建筑技术科学]