High-strength concrete rapid strengthening and repairing material and preparation method thereof

Abstract

The invention relates to a high-strength concrete rapid reinforcement and repair material and a preparation method thereof. It is prepared from raw materials containing the following components and their weight parts: 100 parts of inorganic gelling powder, 10-50 parts of mineral admixture, and adhesion promoting 10-30 parts of latex powder, 1-5 parts of modified dispersing thixotropic agent, 100-300 parts of sand, 8-15 parts of short fiber and 50-90 parts of water. Compared with the prior art, the repair material of the present invention has the functions of repair, reinforcement, seepage prevention, protection, etc., and the setting and curing time is short, and the setting time can be adjusted according to needs. application prospects.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a high-strength concrete rapid reinforcement and repair material and a preparation method thereof. Background technique [0002] In today's urban construction, concrete is widely used in the construction of ports, dams, highways, bridges, municipal and other modern projects due to its good mechanical properties and durability. However, during the service process of concrete structures, they are often affected by various environmental factors, such as physical, chemical or biological erosion of the atmosphere, water, etc., as well as shrinkage and expansion caused by changes in temperature and humidity. A variety of dynamic loads and static loads will cause cracks, shedding, leakage and corrosion damage to the concrete, which will have a great negative impact on the bearing capacity and anti-permeability of the concrete structure, causing huge safety hazards. Therefore, ...

AI Technical Summary

Problems solved by technology

[0003] Among many repair materials, ordinary portland cement mortar or concrete is used as a conventional repair material, which has the following technical problems: long setting time, slow strength development, low bond strength, and corrosion resistance to some acids and salts Poor performance, not suitable for rapid repair, especially for projects with high corrosion resistance requirements

At present, the more commonly used repair materials based on organic resin are mostly epoxy resin repair materials, which usually have the disadvantages of high brittleness and poor aging resistance in actual use, and are more sensitive to temperature. When it is low, the curing time is longer and the strength growth is slower, so it is not suitable for structures that require rapid repair, and the scope of use is greatly limited

Images