Concrete crack grouting repairing material prepared from calcium silicate hydrate crystal seed powder and use method of material

Abstract

The invention relates to the field of building construction materials, in particular to a concrete crack grouting repairing material prepared from calcium silicate hydrate crystal seed powder and a use method of the material.The concrete crack grouting repairing material is prepared from ordinary Portland cement, the calcium silicate hydrate crystal seed powder, hydroxymethyl cellulose ether, dispersible adhesive powder, gypsum, a naphthalene sulfonated formaldehyde condensate water reducing agent, limestone powder and alunite.The concrete crack grouting repairing material can be used for rapidly repairing concrete cracks of a building structure, and therefore the mechanical property and durability of the concrete structure are improved, and the service life of the building is prolonged.The concrete crack grouting repairing material is suitable for repairing of cracks of concrete structures such as reinforced concrete structures, concrete pavements, bridges and water conservancy projects.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a concrete crack grouting repair material prepared by using hydrated calcium silicate seed crystal powder and a use method thereof. Background technique [0002] With the increasing application range of concrete material structures, people put forward higher requirements for concrete materials. However, concrete also has its own inherent defects and deficiencies, such as leakage and permeable deterioration, which are mainly due to the fact that concrete is not a material with high homogeneity, and there are many harmful pores and cracks inside. Cracks, in particular, can be called common and frequently-occurring diseases of concrete materials, and their quantity, shape, distribution and other characteristics have a significant impact on the mechanical strength and durability of concrete. At present, many old buildings and engineering structures with poor construction quality in...

AI Technical Summary

Problems solved by technology

These materials are all repair materials designed from the perspective of rapid ettringite generation. However, the crystal structure of ettringite is often distributed in acicular shape, and its excessive formation will be locally enriched inside the material, and stress concentration will occur under load. It has become the source of secondary cracking of grouting repair materials; and it has a coating effect on cement particles, which is not conducive to the development of the microstructure of grouting materials in the later stage, which will affect the durability of grouting repair materials