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Resin concrete for quick maintenance of bridge expansion joints

A resin concrete and expansion joint technology, which is applied in the engineering field, can solve the problems such as the difficulty of fast and durable replacement of expansion joints, single concrete material, secondary damage, etc., to delay or inhibit the oxidation process, and to achieve excellent impact toughness. , the effect of low noise

Active Publication Date: 2016-07-13
CHONGQING PENGFANG PAVEMENT ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The research and application of bridge expansion joint replacement technology has achieved certain results and progress, and the expressway bridge expansion joint replacement technology is becoming more and more mature. Due to the influence of material technology, construction environment and expansion joint structure itself, it is still difficult to meet the technical requirements for rapid and durable replacement of expansion joints. The concrete materials used for rapid replacement of expansion joints are still single. Replacement of more common materials, although its open traffic time is short, but the material properties are still similar to ordinary cement concrete, the poor bonding of the old and new interfaces and the brittleness of concrete are unavoidable, secondary damage is prone to occur, and the overall performance is better The polymer anchor concrete relies heavily on imported materials
Therefore, it is imminent to study the anchoring resin concrete with excellent properties to solve the problem that the anchoring concrete of expansion joints is easily damaged.

Method used

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  • Resin concrete for quick maintenance of bridge expansion joints
  • Resin concrete for quick maintenance of bridge expansion joints
  • Resin concrete for quick maintenance of bridge expansion joints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The weight content of each component in the expansion joint rapid repair resin concrete is:

[0031] Synthetic resin 50kg, mineral material 50kg.

[0032] Among them, the synthetic resin is composed of component A: the proportion of component A is as follows, including hard monomer methyl methacrylate 19.5kg, hard monomer styrene 0.73kg, soft monomer butyl methacrylate 9.76kg, soft monomer acrylic acid - 2-ethylhexyl ester 2.44kg, crosslinking monomer trimethylolpropane triacrylate 1.71kg, prepolymer polyether polyurethane diacrylate 12.2kg, prepolymer bisphenol A epoxy diacrylate 1.46 kg, accelerator N,N-dimethylaniline 0.49kg, coupling agent γ-propylmethacrylate trimethoxysilane 0.24kg, oxygen inhibitor melting point 55°C paraffin 0.17kg, polymerization inhibitor 4-methoxy Base phenol 0.02kg, defoamer BYK-0880.05kg.

[0033] Synthetic resin component B: 50% dibenzoyl peroxide 1.23kg.

[0034] Among them, the mineral material is composed of: basalt 32.5kg, titanium ...

Embodiment 2

[0044] The weight content of each component in the expansion joint rapid repair resin concrete is:

[0045] Synthetic resin 30kg, mineral material 70kg.

[0046]The synthetic resin is composed of component A: hard monomer methyl methacrylate 10.19kg, hard monomer ethyl methacrylate 1.46kg, hard monomer styrene 0.44kg, soft monomer butyl methacrylate 4.36kg, Soft monomer butyl acrylate 1.46kg, soft monomer 2-ethylhexyl acrylate 3.35kg, prepolymer polyether polyurethane diacrylate 5.83kg, prepolymer bisphenol A epoxy diacrylate 1.46kg, Accelerator N,N-dimethylaniline 0.29kg, coupling agent γ-propylmethacrylate trimethoxysilane 0.15kg, oxygen inhibitor polyethylene wax 0.10kg, polymerization inhibitor 4-methoxyphenol 0.01 kg, defoamer BYK-0880.03kg.

[0047] Synthetic resin component B: 0.87kg of 50% dibenzoyl peroxide.

[0048] The mineral materials are composed of: 56kg of quartz sand and 14kg of kaolin.

[0049] The specific preparation method is as follows:

[0050] Step...

Embodiment 3

[0059] The weight content of each component in the expansion joint rapid repair resin concrete is:

[0060] Synthetic resin 15kg, mineral material 85kg.

[0061] The synthetic resin is composed of component A: hard monomer methyl methacrylate 4.39kg, hard monomer ethyl methacrylate 1.46kg, hard monomer styrene 0.22kg, soft monomer butyl methacrylate 2.93kg, Soft monomer isobornyl acrylate 0.22kg, prepolymer aliphatic polyurethane diacrylate 4.39kg, bisphenol A epoxy diacrylate 0.73kg, accelerator N,N-dimethyl-p-toluidine 0.15kg, coupling Agent γ-propylmethacrylate trimethoxysilane 0.07kg, oxygen inhibitor polyethylene wax 0.05kg, polymerization inhibitor 4-methoxyphenol 0.01kg, defoamer BYK-0880.01kg.

[0062] Synthetic resin component B: 0.37kg of 50% dibenzoyl peroxide.

[0063] The mineral materials are composed of: 76.5kg of quartz sand and 8.5kg of kaolin.

[0064] The specific preparation method is as follows:

[0065] Step 1: Preparation of component A: (1) Feed mat...

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Abstract

The invention discloses resin concrete for quick maintenance of bridge expansion joints.The resin concrete comprises, by weight, 15-50% of synthetic resin and 50-85% of mineral aggregate, the mineral aggregate is composed by mixing aggregate with filler, the synthetic resin is composed of components A and B, the component A comprises, by weight part, hard monomer, soft monomer, cross-linking monomer, prepolymer, accelerant, coupling agent, antioxidant, polymerization inhibitor and defoamer and the component B comprises, by weight part, initiator.The invention further discloses a preparation method of the resin concrete.The preparation method includes: putting the accelerant, the coupling agent and the defoamer into a special reaction tank; after stirring is completed, pouring resin mortar into an expansion joint maintenance groove, and maintaining for 2-3 h before opening to traffic.The resin concrete is supportive quick construction, high in resistance to impact toughness, low in noise, free of bumping, wear-resistant and resistant to oil stain and ice thawing salt corrosion, the problems of repeated maintenance and repeated damage of expansion joint anchoring concrete can be solved fundamentally, and traveling safety and comfort are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of engineering, and in particular relates to a resin concrete used for quick maintenance of bridge expansion joints and a preparation method thereof. Background technique [0002] The research and application of bridge expansion joint replacement technology has achieved certain results and progress, and the expressway bridge expansion joint replacement technology is becoming more and more mature. Due to the influence of material technology, construction environment and expansion joint structure itself, it is still difficult to meet the technical requirements for rapid and durable replacement of expansion joints. The concrete materials used for rapid replacement of expansion joints are still single. Replacement of more common materials, although its open traffic time is short, but the material properties are still similar to ordinary cement concrete, the poor bonding of the old and new interfaces and the brit...

Claims

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Application Information

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IPC IPC(8): C04B26/04C08F291/12C08F291/10
CPCC04B26/04C08F283/008C08F283/105C04B2201/50C04B2111/72C04B14/14C04B14/305C04B14/06C04B14/106C08F220/18C08F220/1804C08F220/1805
Inventor 郑煜熊峰李昕郑自豪赵国云邵强
Owner CHONGQING PENGFANG PAVEMENT ENG RES INST
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