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Crack pouring adhesive for concrete cracks and application of crack pouring adhesive

A technology for concrete and joint-filling glue, used in adhesives, epoxy resin glue, other chemical processes, etc., can solve the problems of poor bonding performance, poor permeability, poor permeability, etc.

Inactive Publication Date: 2013-07-03
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Crack treatment is one of the most commonly used means of bridge reinforcement, and the application of crack grouting glue is also quite common. However, all crack grouting glues currently on the market have poor bonding performance, poor permeability, and poor constructability during actual use. And other issues
During the construction process, through coring inspection, it was found that there were problems such as poor permeability, poor bonding performance, and poor construction performance. Therefore, high-performance crack grouting with good permeability, good bonding performance, and good construction process performance was developed. Glue research is imminent

Method used

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  • Crack pouring adhesive for concrete cracks and application of crack pouring adhesive
  • Crack pouring adhesive for concrete cracks and application of crack pouring adhesive
  • Crack pouring adhesive for concrete cracks and application of crack pouring adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Embodiment 1, the preparation and performance of concrete cracks with potting glue

[0081] 1. Preparation of joint glue for concrete cracks

[0082] 1. Preparation of Component A and Component B

[0083] As shown in Table 5, the component A of this embodiment consists of 70 parts by mass of E-51 bisphenol A liquid epoxy resin (abbreviated as E-51), 30 parts by mass of 6002 bisphenol A liquid epoxy resin (abbreviated as 6002 ), 15-30 parts by mass of QS-BE toughening agent (abbreviated as BE), 5-15 parts by mass of benzyl glycidyl ether (abbreviated as 692) and 5-15 parts by mass of benzyl alcohol (abbreviated as BA).

[0084] Table 5. Composition of Fraction A

[0085] Material name parts by mass illustrate E-51 70 General purpose epoxy resin

[0086] 6002 30 Low Viscosity Epoxy Resin BE 15-30 Toughener 692 5-15 Thinner BA 5-15 Thinner

[0087] As shown in Table 6, component B of this embodiment consis...

Embodiment 2

[0118] Embodiment 2, engineering application of concrete cracks with potting glue

[0119] In October 2012, concrete cracks in Example 1 were used for concrete cracks with 1-3# / 2-2# for actual trial application in a concrete bridge in Beijing. The specific experimental method is as follows: measure cracks by crack width gauge Width, for cracks ≥ 1.5mm, use an electric angle grinder to polish and clean the surface first, clean with acetone or alcohol, paste the glue nozzle every 20-40cm, and then use the concrete cracks in Example 1 to seal the cracks with glue, After curing, the glue is poured through the glue pouring equipment. After the pouring is completed 24 hours, the core is taken on site with a rhinestone. The results show that the concrete cracks are full of cracks with 1-3# / 2-2# cracks ( figure 1 with figure 2 ), indicating that the cement for concrete cracks of the present invention has good constructability and pourability.

[0120] Wherein, the concrete cracks ...

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Abstract

The invention discloses a crack pouring adhesive for concrete cracks and an application of the crack pouring adhesive. The crack pouring adhesive for the concrete cracks consists of a component I and a component II which are independently packaged, and the mass ratio of the component I to the component II is (5-2):1; the component I consists of raw materials in parts by mass as follows: 70 parts of an E-51 bisphenol A liquid epoxy resin, 30 parts of a 6002 bisphenol A liquid epoxy resin, 15-30 parts of a toughening agent,5-15 parts of benzyl glycidyl ether and 5-15 parts of benzyl alcohol; and the component II consists of 30-65 parts of a curing agent, 5-10 parts of diluent and 0.5 part of a sticking accelerating agent; the curing agent consists of 30-50 parts of a polyether amine curing agent and 0-15 parts of a phenolic amine epoxy curing agent; and the diluent is benzyl alcohol. The crack pouring adhesive for the concrete cracks is a solvent-free double-component low-viscosity crack pouring adhesive and can be used for filling the concrete cracks to seal the concrete cracks.

Description

technical field [0001] The invention relates to a caulking glue for concrete cracks and its application. Background technique [0002] At present, China is already a big bridge country, and the newly built bridges every year account for about half of the total number of bridges in the world. By the end of 2000, there were 278,800 highway bridges in China, of which about 60% were over 20 years old. As of 2010, 658,126 highway bridges have been built, totaling 30,483,094 linear meters. Among the more than 650,000 existing bridges in our country, concrete bridges account for more than 90%, and our country has become a veritable bridge country. According to the experience of developed countries, according to the control of their normal material, design and construction technology level, 20%-30% of concrete bridges will still have durability problems after 20-30 years of operation. my country's concrete bridge construction lags behind western developed countries in terms of ra...

Claims

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Application Information

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IPC IPC(8): C09J163/02C09K3/10
Inventor 张江威任红伟李承昌陈敏李怀雷庞志华武俊彦
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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