High-ductility quick-setting quick-hardening concrete repairing material

Abstract

The invention relates to the technical field of building materials, and discloses a high-ductility quick-setting quick-hardening concrete repairing material. The material is prepared from the following raw materials in parts by weight: 30 to 80 parts of fly ash, 90 to 140 parts of quartz sand and 70 to 120 parts of water. According to the high-ductility quick-setting quick-hardening concrete repairing material, by adding Portland cement, aluminate cement and dihydrate gypsum, a large amount of ettringite and hydrated calcium aluminate can be generated in the early melting stage of water, so high early strength can be obtained; the ettringite contains a large amount of crystal water and has certain expansion performance for a system, so good adhesion with foundation concrete can be formed, and the purpose of good adhesion is achieved; and by adding a certain amount of mineral powder, a pore structure can be refined, and the mineral powder can react with calcium hydroxide and other substances to generate hydrated calcium silicate gel (volcanic ash effect) so as to further improve the compactness and the ion erosion resistance of mortar, and the purpose of good compactness and ion erosion resistance of the mortar is achieved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-ductility fast-setting rapid-hardening concrete repair material. Background technique [0002] In today's world, structural failures or building function failures caused by various reasons not only affect people's normal life but also cause huge economic losses. Among them, cracks, shedding and leakage of cement concrete structures are the most common maintenance of concrete products. Problem, there are more and more concrete repair materials that have been successfully developed and put into the market, mainly including inorganic and organic repair materials, among which epoxy resin repair materials or (meth)acrylic repair materials have occupied the majority of organic concrete repair materials. Mostly. [0003] Although these concrete repair materials have excellent adhesion to dry concrete, they have the following problems. When they are wet from rain or us...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-ductility rapid-setting rapid-hardening concrete repair material, which has the advantages of good adhesion, good mortar density and ion erosion resistance, and solves the problem of being wet by rain. If it is used in a humid environment such as a sewer, the required adhesiveness cannot be obtained, and the compactness and ion erosion resistance of the mortar are poor, which affects the durability of the building.