冻融环境下普通混凝土力学性能的试验研究  

Experimental study on the strength of plain concrete after freezing-thawing circumstance

作　　者：曹大富[1] 富立志[1] 

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225009

出　　处：《混凝土》2010年第10期34-36,40,共4页Concrete

基　　金：国家自然科学基金重点资助项目(50978224);江苏省教委自然科学基金课题(01KJB56003)

摘　　要：对经过0、25、50、75、100、125次冻融循环的四个不同等级的普通混凝土立方体试块和少部分棱柱体试块进行了试验研究。主要测定了立方体抗压强度、劈拉强度、动弹性模量及质量损失等数据,随后对试验结果进行了分析,综合冻融次数和混凝土等级两个因素建立了简单的数学表达式,为寒冷地区建筑物的设计、维护及其寿命预测等提供试验及理论依据。The experimental study of plain concrete test cubes and a few prismoids,both of what classified to four ranks,suffering 0,25,50,75,100 and 125 cycles of freezing and thawing were carried out.The compressive strengt and splitting tensile strength,the dynamic modulus of elasticity and the weight loss of concrete were measured.Then,according to the test result,the related regression formulas were established with a view to freezing and thawing cycle times and concrete grade.The design theory and test method of concrete undergo freeze-thaw damage were established.

关 键 词：混凝土 冻融循环 抗压强度 劈拉强度 

分 类 号：TU528.01[建筑科学—建筑技术科学]