普通混凝土冻融循环后性能的试验研究

对经过0、25、50、75、100次冻融循环的普通混凝土，进行了实验研究：主要测定了单轴抗压强度及单轴抗拉强度、单轴压及单轴拉时的峰值应变、初始弹性模量与峰值变形模量、动弹性模量、质量损失及应力一应变关系等数据，并建立了简单的数学表达式。随后对试验结果进行了分析。可以为北方寒冷地区的水坝、港口水工建筑物、公路、桥梁等的设计、维修、维护及其寿命预测等提供试验及理论依据。

Experimental Study on Properties of Concrete after Freezing and Thawing Cycles

The experimental study of plain concrete specimens suffering 0, 25, 50 ,75 and 100 cycles of freezing and thawing were carried out. The compressive strength and tensile strength , the initial elastic modulus, the secant modulus at the peak of stress, the dynamic modulus of elasticity, the weight loss and the stress-strain curve of concrete were measured. The testing rezults were discussed and the related regression formulas were established.