Preparation and properties of self-healing thermostatic waterproof composites
Taking 28 d compressive strength and impermeable pressure ratio as indexes,a new self-healing thermostatic waterproof composite was developed.The crack self-healing property of the mortar mixed with self-healing thermostatic waterproof composite material was studied and analyzed by XRD and SEM.The results show that after dosing self-healing thermostatic waterproof composite material,the temperature inhibition rate of cement paste is 47％,the primary impervious pressure ratio of concrete(28 d)can reach 400％,the secondary impervious pressure ratio(56 d)is 325％,the 28 d compressive strength ratio is 113％,and the 0.3 mm crack of mortar can realize self-healing after 90 d.The crystalline components and active substances in the waterproof material can promote the hydration of cement and react with the hydration products of cement to generate crystals to fill cracks and pores,thus improving the waterproof performance and self-healing ability of the test piece.
万方数据
维普
