摘要
采用Z形试件剪切试验方法,对混凝土试件在冻融循环作用下的剪切强度进行了试验研究,并对混凝土冻融损伤的机理进行了初步分析.结果表明,在冻融循环作用下,混凝土的相对剪切强度随冻融循环次数的增加而降低,原因在于冻融循环引起水泥石本身和水泥石与骨料之间产生损伤,降低了混凝土的强度.
With Z-shape direct shear specimen, the shear strength of concrete subjected to freezing-and-thawing is discussed.And the mechanics of freezing and thawing deterioration is also analyzed. The results indicate that the relative shear strength decreases with the numbers of freezing cycles. The main reason is that cement paste itself and the interface between aggregate and cement paste deteriorate,which leads to the decrease of the concrete strength.
出处
《郑州大学学报（工学版）》
CAS
2004年第4期12-15,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(59778045)
郑州大学青年骨干教师资助计划项目
关键词
混凝土
剪切强度
冻融循环
损伤
freezing and thawing
concrete
shear strength
deterioration
