MICROCAPSULE FOR SELF-REPAIRING CONCRETE AND PREPARATION METHOD THEREOF, AND SELF-REPAIRING CONCRETE AND PREPARATION METHOD THEREOF

摘要

Disclosed are a microcapsule for self-repairing concrete and a preparation method thereof, and a self-repairing concrete mixed with the microcapsule and a preparation method thereof. The microcapsule comprises a capsule core and a capsule wall, the components of the capsule core comprising a repairing agent, microcrystalline cellulose and tween 80, and the material of the capsule wall being a high molecular organic material sensitive to cracking stress. The method for preparing the self-repairing concrete comprises weighting a suitable amount of cement, sand, water and microcapsules, wherein the microcapsules are measured at a ratio of 0.05-0.08 cubic metres per cubic metre of concrete, and cement, sand and microcapsules are mixed until uniformly dispersed, and then water is poured into the mixture and stirred uniformly.