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A kind of anti-cracking epoxy mortar for rapid repair of expansion joints and preparation method thereof

A kind of epoxy mortar, anti-cracking technology, applied in the field of building materials, to achieve the effect of improving epoxy poor toughness, good compatibility, good long-term applicability

Active Publication Date: 2020-09-25
CARBON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a crack-resistant epoxy mortar for rapid repair of expansion joints. The present invention solves the common problem that traditional epoxy mortar is easy to crack when large-area construction of expansion joints; Moreover, the epoxy mortar provided by the present invention can also be used for rapid repair, even low temperature repair at 0°C

Method used

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  • A kind of anti-cracking epoxy mortar for rapid repair of expansion joints and preparation method thereof
  • A kind of anti-cracking epoxy mortar for rapid repair of expansion joints and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 100 parts by weight of bisphenol A type epoxy resin, 50 parts of AGE epoxy resin reactive diluent, 60 parts of acrylic acid grafted polyurethane resin as toughening resin, 2 parts of silane coupling agent KH560 are mixed and stirred evenly .

[0030] (2) Preparation of component B

[0031] 100 parts by weight of the aliphatic modified polyamine curing agent.

[0032] (3) Preparation of C component

[0033] Mix and stir 20 parts by weight of 40 mesh to 80 mesh quartz sand, 40 parts of 80 mesh to 120 mesh quartz sand, 40 parts of 120 mesh to 160 mesh quartz sand, and 20 to 40 parts of 325 mesh fly ash uniform.

[0034] (4) Mix and stir components A, B, and C according to the mass ratio of 2:1:9 to obtain the epoxy mortar.

Embodiment 2

[0036] (1) Preparation of component A

[0037] 100 parts by weight of bisphenol A type epoxy resin, 50 parts of AGE epoxy resin reactive diluent, 80 parts of acrylic grafted polyurethane resin as toughening resin, and 2 parts of KH560 were mixed and stirred evenly. .

[0038] (2) Preparation of component B

[0039] 100 parts by weight of the aliphatic modified polyamine curing agent

[0040] (3) Preparation of C component

[0041] Mix and stir 20 parts by weight of 40 mesh to 80 mesh quartz sand, 40 parts of 80 mesh to 120 mesh quartz sand, 40 parts of 120 mesh to 160 mesh quartz sand, and 20 to 40 parts of 325 mesh fly ash uniform.

[0042] (4) Mix and stir components A, B, and C according to the mass ratio of 2:1:10 to obtain the epoxy mortar.

Embodiment 3

[0044] (1) Preparation of component A

[0045] 100 parts by weight of bisphenol A type epoxy resin, 50 parts of AGE epoxy resin reactive diluent, 100 parts of acrylic grafted polyurethane resin as toughening resin, and 2 parts of KH560 were mixed and stirred evenly. .

[0046] (2) Preparation of component B

[0047] 100 parts by weight of the aliphatic modified polyamine curing agent

[0048] (3) Preparation of C component

[0049] Mix and stir 20 parts by weight of 40 mesh to 80 mesh quartz sand, 40 parts of 80 mesh to 120 mesh quartz sand, 40 parts of 120 mesh to 160 mesh quartz sand, and 20 to 40 parts of 325 mesh fly ash uniform.

[0050] (4) Mix and stir components A, B, and C according to the mass ratio of 2:1:9 to obtain the epoxy mortar.

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to anti-cracking epoxy mortar used for rapid repair of expansion joints. The anti-cracking epoxy mortar isprepared from bisphenol A type epoxy resin, an AGE epoxy resin reactive diluent, an acrylic acid grafted polyurethane resin toughener, an aliphatic series modified polyamine curing agent and the likeby mixing with mortar. According to the prepared epoxy mortar, the common problem that traditional epoxy mortar is prone to cracking during large-area construction of the expansion joints is solved; besides, the epoxy mortar can also be used for rapid repair, and even low-temperature repair at 0 DEG C.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an anti-cracking epoxy mortar for rapid repair of expansion joints and a preparation method thereof. Background technique [0002] Expansion joints are an important part of bridge engineering, and their construction technology is a very critical process in bridge construction and an important part that affects the quality of bridges. The quality of expansion joints will affect the overall connection of the bridge, and it will cause a lot of impact and jumping when the vehicle is running, leading to traffic safety accidents. [0003] In the new road expansion joint repair technology, epoxy elastic repair materials are mostly used. As Chinese Patent Publication No.: 105541180A, it is proposed to repair expansion joints with epoxy polyether amine system; but it still does not solve the general problem that epoxy mortar is easy to crack when large-area constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/14
CPCC04B26/14C04B2201/32C04B2201/50C04B24/282C04B24/121C04B24/42C04B18/08C04B14/06
Inventor 周洪芝许小海汤飞
Owner CARBON TECH CO LTD