Epoxy resin concrete material with anti-cracking property

Abstract

The invention discloses an epoxy resin concrete material with the anti-cracking property. The epoxy resin concrete material is prepared from the following components in parts by weight: 65-85 parts ofcement, and 15-35 parts of an adhesive; the adhesive is prepared from the following components in percentage by weight: 80-90% of modified epoxy resin, 5-15% of a curing agent, and 4-8% of a reactivediluent. Linear epoxy resin is subjected to ring opening, then the linear epoxy resin and bis(1-phenyl-2-carboxyl ethyl)phosphonic acid are polymerized and esterified to obtain the modified epoxy resin, the obtained modified epoxy resin has good flexibility, good bonding strength and good impact strength, meanwhile, through introduced carboxyl, the wettability of the modified epoxy resin and acement substrate can be improved, thus adhesive force and anti-aging performance of the cured modified epoxy resin are improved, cracking of concrete is prevented, and the service life of the concrete material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of concrete, in particular to an epoxy resin concrete material with crack resistance. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. The term concrete usually refers to the cement concrete obtained by mixing cement with cement as cementing material, sand and stone as aggregate, and water (may contain admixtures and admixtures) in a certain proportion, also known as ordinary concrete. Concrete is the most important material for building structures. It is widely used in roads, construction, decoration, heavy industry and other fields, but it is used in high load-bearing and high-impact environments. The compression, flexural and anti-corrosion properties of simple concrete materials Crack performance is low, and cracks are one of the most common diseases of concrete structures, which have a v...

AI Technical Summary

Problems solved by technology

The term concrete usually refers to the cement concrete obtained by mixing cement with cement as cementing material, sand and stone as aggregate, and water (may contain admixtures and admixtures) in a certain proportion, also known as ordinary concrete. Concrete is the most important material for building structures. It is widely used in roads, construction, decoration, heavy industry and other fields, but it is used in high load-bearing and high-impact environments. The compression, flexural and anti-corrosion properties of simple concrete materials The crack performance is low, and cracks are one of the most common diseases of concrete structures, which have a very adverse effect on the safety and durability of concrete structures.

[0003] Epoxy resin has excellent adhesion, stability, chemical resistance, insulation and mechanical strength, so it has become a polymer material commonly used in cement concrete modification, but epoxy resin is a thermosetting resin, and the degree of crosslinking High, poor flexibility and impact resistance, brittle and easy to crack

[0004] In addition, the limiting oxygen index (LOI) of epoxy resin material is low, which is a flammable substance. It is easy to cause fire if it continues to ignite spontaneously after leaving the fire, which greatly limits its application. Therefore, flame retardant treatment is generally required before use.

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