自密实混凝土冻融循环的性能研究  

EXPERIMENTAL RESEARCH ON PROPERTY OF SELF COMPACTING CONCRETE OF BRIDGE IN COLD REGION

作　　者：何承义[1] 王景波[1] 丁剑婷[1] 盛可鉴[1] 

机构地区：[1]黑龙江工程学院土木与建筑工程学院,哈尔滨150050

出　　处：《低温建筑技术》2010年第11期1-3,共3页Low Temperature Architecture Technology

基　　金：黑龙江省自然科学基金项目(E200619)

摘　　要：通过对自密实混凝土进行快冻法和3%NaCI溶液的冻融循环试验,测定不同冻融循环次数后的抗压强度、劈裂抗拉强度、质量损失率和相对动弹模量及其变化特点。结果表明,自密实混凝土随着冻融次数的增加,其表观质量、力学性能均呈现不同下降趋势。可为寒区桥梁工程设计、养护及寿命预测提供依据。By adopting quick freeze-thaw method and freeze-thaw tests of mass fraction 3% NaCl,the self compacting concrete specimens are subjected.Then the weight,the cubic compression strength,the relative dynamic modulus of elastic and the splitting strength were measured after different freezing and thawing cycles.The experimental results show that with the increase of times of freeze-thaw cycles,the apparent quality and mechanical properties decline in different velocities.The results may provide as a basis for the design and curing of the bridge in cold region.

关 键 词：自密实混凝土 冻融循环 冻融-氯盐共同作用 

分 类 号：TU528[建筑科学—建筑技术科学]