Self-repairing carrier for maritime work environment and preparation method and application thereof

Abstract

The invention discloses a preparation method of a self-repairing carrier for a maritime work environment, the preparation method comprises the following steps: S1, compounding an aluminum oxide-containing volcanic ash material and lime in proportion, loading into a sugarcoating machine, and spraying a proper amount of alcohol to prepare spherical particles; s2, adding the spherical particles in the S1 and cement into a sugar coating machine, uniformly spraying deionized water in the rotating process, coating a layer of cement on the surface layers of the spherical particles, and curing; and S3, putting the cured particles in the step S2 into a hydrophobic emulsion, and coating the surface layer of the particles with a layer of hydrophobic emulsion to obtain the self-repairing carrier. The self-repairing carrier replaces part of sand and is applied to cement, after cracks are cracked, seawater entering a base body reacts with the volcanic ash material containing activated aluminum oxide and lime in the self-repairing carrier to form ettringite, the cracks are filled and sealed, and seawater-excited cement-based material crack self-repairing is achieved.

Description

technical field [0001] The invention belongs to the interdisciplinary science and technology of microbiology, material science and civil engineering, and specifically relates to a self-repairing carrier for marine environment and its preparation method and application. Background technique [0002] Cement-based materials are one of the largest building materials necessary for ocean engineering or coastal engineering. However, the relatively low tensile strength makes cement-based materials inevitably crack under the action of internal and external factors, and seawater contains Cl - , SO 4 2- and Mg 2+ Plasma will react with cement hydration products after intrusion, which will cause different degrees of erosion and damage to engineering structures, resulting in continuous degradation of cement-based materials, seriously affecting the durability and service life of buildings. Therefore, how to repair the cracks of cement-based materials in a timely and effective manner i...

AI Technical Summary

Problems solved by technology

However, the relatively low tensile strength makes cement-based materials inevitably crack under the action of internal and external factors, and seawater contains Cl - , SO 4 2- and Mg 2+ After plasma intrusion reacts with cement hydration products, it will cause different degrees of erosion and damage to engineering structures, resulting in continuous degradation of cement-based materials, seriously affecting the durability and service life of buildings.

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