Concrete crack repair material and using method thereof

Abstract

The invention discloses a concrete crack repair material and a using method thereof. The material comprises the following components in percentage by weight: 10 to 20 percent of one or more of ferric nitrate, ferrous nitrate and magnesium nitrate, 10 to 20 percent of barium nitrate, 0.5 to 10 percent of sodium silicate, 5 to 10 percent of lithium oxychloride, 1 to 5 percent of sodium benzoate, 30 to 50 percent of silica powder and 10 to 20 percent of adhesive. The prepared material can be coated on concrete surfaces to repair macrocracks and microcracks and can be doped into concrete to prevent the microcracks, so that the microcracks and the macrocracks which are formed at the early stage and later stage of the concrete are effectively inhibited and repaired, and the durability of the concrete is greatly improved.

Description

Technical field: [0001] The invention belongs to the technical field of building materials, in particular to a formula and application method of a concrete crack repairing material. Background technique: [0002] Concrete permeability is the most critical factor affecting the durability of concrete. Cracks lead to a significant increase in the permeability of the concrete. Therefore, the study of concrete crack repair materials is an important way to enhance and improve the impermeability of concrete and improve the durability of concrete. At present, people mostly take remedial measures such as grouting and plugging to repair macroscopic cracks in concrete, but there is nothing they can do about microscopic cracks in concrete and their prevention. Traditional repair materials use the filling-reaction-coagulation method, which has no secondary activity, and it is basically impossible to repair the micro-cracks inside the concrete, and these materials will crack again in th...

AI Technical Summary

Problems solved by technology

Traditional repair materials use the method of filling-reaction-coagulation, which has no secondary activity, and it is basically impossible to repair the micro-cracks inside the concrete, and these materials will crack again in the repaired concrete

Although cement-based permeable crystalline waterproof materials can solve concrete cracks to a certain extent, they do not have long-term repairing ability for concrete micro cracks and macro cracks.