新混凝土与碳化混凝土黏结的劈拉强度试验研究

Experimental study on bonding split strength of new and cabronated concrete

试验研究了新混凝土与碳化混凝土黏结的劈拉强度,分析了碳化对黏结劈拉强度提高作用的原因,通过7、28、60、90 d养护龄期时的黏结劈拉试验结果,系统考察了水泥净浆界面剂、硅灰界面剂、减水界面剂、减缩界面剂和膨胀界面剂对粘结劈拉强度的影响变化规律,并从机理上给予了阐述。

Experimental studies on the bonding split tensile strength of new and carbonated concrete,and then analysis the enhancing reason of bond split tensile strength affected by concrete carbonation,systematically invests the variation of split tensile strength affected by the cement agent,silicon ash agent,water-reducing agent,shrinkage-reducing agent and expansion agent through the test of 7,28,60,90 d and expounds from the mechanism.