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Low-shrinkage engineering repair material and preparation method thereof

A repair material, low shrinkage technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as insufficient volume stability of repair materials, overcome compatibility differential layer segregation, reduce early stage The effect of shrinkage, strength and durability improvement

Active Publication Date: 2022-07-05
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention is to solve is the technical problem of insufficient volume stability of organic-inorganic composite engineering repair materials, and proposes a low-shrinkage engineering repair material and its preparation method

Method used

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  • Low-shrinkage engineering repair material and preparation method thereof
  • Low-shrinkage engineering repair material and preparation method thereof
  • Low-shrinkage engineering repair material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A low-shrinkage engineering repair material, the mass ratio of each component in the raw material is: cement-emulsified asphalt-water-based epoxy resin composite base mortar: fine aggregate: organic nano-montmorillonite: water reducing agent: defoaming agent: Retarder: water = 100:180:4:0.4:0.0003:0.4:10; the cement-emulsified asphalt-water-based epoxy resin composite base mortar is composed of cement, emulsified asphalt, epoxy resin, and curing agent in a mass ratio. 100:50:6:6 prepared.

[0031] The cement is 52.5 fast-hardening sulfoaluminate cement; the emulsified asphalt is anionic high-viscosity emulsified asphalt; the epoxy resin is E51 type epoxy resin; and the curing agent is a non-ionic self-emulsifying curing agent.

[0032] The water reducing agent is a polycarboxylate water reducing agent; the defoaming agent is a polyether type defoaming agent; the setting retarder is analytical pure boric acid; the fine aggregate is ultra-fine porous shale ceramsite It i...

Embodiment 2

[0044] A low-shrinkage engineering repair material, the mass ratio of each component in the raw material is: cement-emulsified asphalt-water-based epoxy resin composite base mortar: fine aggregate: organic nano-montmorillonite: water reducing agent: defoaming agent: Retarder: water = 100:200:5:0.3:0.0003:0.1:5; the cement-emulsified asphalt-water-based epoxy resin composite base mortar is composed of cement, emulsified asphalt, epoxy resin, and curing agent in a mass ratio. 100:80:10:10 prepared.

[0045] The cement is 42.5 fast-hardening sulfoaluminate cement; the emulsified asphalt is anionic high-viscosity emulsified asphalt; the epoxy resin is E51 type epoxy resin; and the curing agent is a non-ionic self-emulsifying curing agent.

[0046] The water reducing agent is a polycarboxylate water reducing agent; the defoaming agent is a polyether defoaming agent; the retarder is sodium gluconate; the fine aggregate is ultra-fine porous shale ceramsite It is mixed with quartz sa...

Embodiment 3

[0059] A low-shrinkage engineering repair material, the mass ratio of each component in the raw material is: cement-emulsified asphalt-water-based epoxy resin composite base mortar: fine aggregate: organic nano-montmorillonite: water reducing agent: defoaming agent: Retarder: water = 100:160:6:0.6:0.0006:0.3:5 The cement-emulsified asphalt-water-based epoxy resin composite base mortar is composed of cement, emulsified asphalt, epoxy resin, and curing agent in a mass ratio of 100 :50:10:10.

[0060] The cement is 42.5 fast-hardening sulfoaluminate cement; the emulsified asphalt is anionic high-viscosity emulsified asphalt; the epoxy resin is E51 type epoxy resin; and the curing agent is a non-ionic self-emulsifying curing agent.

[0061] The water reducing agent is a polycarboxylate water reducing agent; the defoaming agent is a polyether type defoaming agent; the retarder is analytical pure boric acid; the fine aggregate is ultra-fine porous shale ceramsite It is mixed with q...

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Abstract

The invention provides a low-shrinkage engineering repair material and a preparation method thereof, and the repair material is prepared from the following raw materials: cement-emulsified asphalt-waterborne epoxy resin composite basic adhesive cement, fine aggregate, organic nano montmorillonite, a water reducing agent, a defoaming agent, a retarder and water in a mass ratio of 100: (160-200): (4-6): (0.3-0.6): (0.0003-0.0006): (0-0.5): (5-10), the cement-emulsified asphalt-water-borne epoxy resin composite basic adhesive cement is prepared from cement, emulsified asphalt, epoxy resin and a curing agent according to the mass ratio of 100: (50-80): (6-10): (6-10). The repairing material is based on cement-emulsified asphalt-water-borne epoxy resin composite adhesive cement, a composite system is modified through organic nano-montmorillonite, and the mechanical property of the composite adhesive cement is improved through the nano-size effect of the organic nano-montmorillonite and the design of delayed water absorption and expansion between molecular layers; and the volume shrinkage of a composite material system in the cementation hardening process is effectively reduced, and the technical problem that the engineering repairing effect is affected due to poor volume stability of a cement-asphalt-based composite repairing material is solved.

Description

technical field [0001] The invention belongs to the technical field of engineering materials, in particular to a low-shrinkage engineering repair material and a preparation method thereof. Background technique [0002] Over the years, my country's infrastructure construction has experienced a peak period of development and construction. At present, the increase of industrial and civil buildings such as bridges, tunnels, dams and municipal buildings has gradually stabilized, and a large number of infrastructures have gradually entered the maintenance stage. Due to the combined effects of dynamic and static loads, steel corrosion, external environmental changes and other factors during service, various engineering structures have caused local damage or even damage to concrete materials such as cracking, pits, and corners falling off, which seriously affected the project. It increases the probability of engineering accidents and causes huge economic losses and casualties. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B24/42C04B24/36C04B24/28C04B18/02C04B111/72
CPCC04B28/065C04B24/425C04B24/36C04B24/281C04B18/027C04B2111/72C04B2103/0068C04B2103/302C04B24/32C04B22/0013C04B14/06Y02W30/91
Inventor 赵明宇李志强丁庆军王晴吴丽梅唐宁朱玉雪赵子瑞史尧
Owner SHENYANG JIANZHU UNIVERSITY
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