Environment-friendly high-durability epoxy mortar

Abstract

The invention provides environment-friendly high-durability epoxy mortar, and belongs to the technical field of building materials. The environment-friendly high-durability epoxy mortar is composed ofa component A and a component B. The component A comprises at least one of graded sandstone and cement, epoxy resin, a carbonyl compound, a glycidyl ether compound and an interface agent, and the component B comprises an amine curing agent, a curing accelerator and a humid environment functional curing agent. According to the mortar disclosed by the invention, the carbonyl compound and the glycidyl ether compound are compounded as a diluent, so that the hardness, the flexibility, the adhesive force, the durability and the dilutability of a mortar layer can be synergistically improved, the shrinkage rate and the cost of the mortar layer are reduced, and environmental protection and safety are facilitated; by adding the humid environment functional curing agent, smooth curing in a humid environment can still be ensured, and the construction applicability is higher.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to an environment-friendly high-durability epoxy mortar. Background technique [0002] The concrete structure in the hydraulic engineering structure is easily subjected to the impact and wear of the sediment in the water under the drive of high-speed water flow. It has a great impact speed and destructive force under the high-speed water flow; in addition, the high-speed water flow There will also be cavities, which will cause cavitation; in addition, some corrosive substances in the water will also enter the interior of the concrete structure and cause corrosion; these destructive factors will cause serious damage to the concrete structure. Under such harsh conditions, ordinary cement mortar or polymer mortar has the disadvantages of low mechanical strength, poor abrasion resistance, and low adhesion to the base surface, which are difficult to meet the requirements of use, ...

AI Technical Summary

Problems solved by technology

[0002] The concrete structure in the hydraulic engineering structure is easily subjected to the impact and wear of the sediment in the water under the drive of high-speed water flow. It has a great impact speed and destructive force under the high-speed water flow; in addition, the high-speed water flow There will also be cavities, which will cause cavitation; in addition, some corrosive substances in the water will also enter the interior of the concrete structure and cause corrosion; these destructive factors will cause serious damage to the concrete structure

Under such harsh conditions, ordinary cement mortar or polymer mortar has the disadvantages of low mechanical strength, poor abrasion resistance, and low adhesion to the base surface, which are difficult to meet the requirements of use, and are prone to large-area voids and falling off. damage phenomenon

Epoxy resin has strong strength, adhesion, wear resistance and water and corrosion resistance, but its toughness is relatively poor.

[0003] Existing epoxy-modified mortars are usually composed of epoxy resins, diluents, additives, sand and other functional fillers, curing agents and accelerators (some contain functional curing agents or catalysts), but the diluents Most of them are non-reactive diluents. For example, in patent CN104844096A, non-reactive diluents will pollute the environment or water bodies. During the construction process, there will be potential safety hazards that may harm the health of construction workers and be flammable and explosive. Non-reactive diluents will not participate in the process of mortar Curing reaction will lead to defects such as large shrinkage rate of mortar, poor mechanical properties and adhesion of mortar

[0004] In addition, the environment of hydraulic structures and tidal ranges has high humidity, and even the construction base surface is wet. If a curing agent that can be cured normally under humid and watery conditions is not used, it will easily lead to incomplete curing of the mortar, resulting in problems such as performance degradation. , especially the small molecule aliphatic amine curing agent is easily soluble in water and seriously affects the mortar curing

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