Analysis and Evaluation of Crack Filling Technique by Expansion Crystallization
In this paper,the repair effect of Sika′s expanded crystalline self-repairing agent was evaluated by area repair rate and ultrasonic pulse velocity method.The test results showed that the repair products generated under the action of the expansion crystallization self-repairing agent effectively filled the cracked area and improved the internal densification of the cement mortar.The repair products of this expansion crys-tallization self-repairing agent mainly included Mg(OH)2 and CaCO3.