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DBB concrete pavement crack repair material

A technology for repairing concrete pavement and cracks, which is applied in the field of pavement repair materials and DBB concrete pavement crack repair materials. Effect of Adhesive Properties

Inactive Publication Date: 2010-09-01
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At this stage, most of the pavement crack repair materials used in my country are polyurethane. This material is black and takes a long time to repair and consolidate. But the cost is high; asphalt sand or epoxy mortar is used to repair road surface potholes, but asphalt sand repairs the road surface with shortcomings such as color difference and high repeated damage rate, and the repair cost of epoxy mortar is extremely high
[0007] To sum up, although a lot of research work has been carried out on concrete crack repair materials at home and abroad, and many achievements have been made, some are still in the research and development stage, and most of the crack repair materials that have been put into use are organic materials, mainly for Building concrete crack repair, these repair materials not only have strict requirements on the crack interface state, high cost, easy aging, but also complex synthesis process, which is not conducive to popularization, and it is even more difficult to meet the requirements of cement concrete pavement crack repair

Method used

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  • DBB concrete pavement crack repair material

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Experimental program
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Effect test

Embodiment 1

[0025] DBB concrete pavement crack repair material, using cement as the matrix material, adding water, styrene butadiene emulsion, JS waterproof emulsion, lons-p type polycarboxylic acid water reducing agent, CaCl to the cement 2 , U-shaped expansion agent (codenamed UEA), crystalline sodium sulfate (Na 2 SO 4 ·10H 2 O) and tributyl phosphate; wherein the mass ratio of water to cement is: 30%; the mass ratio of solid content of styrene-butadiene emulsion to cement is: 30%; the mass ratio of solid content of JS waterproof emulsion to cement is :5%; The mass ratio of lons-p type polycarboxylic acid water reducing agent to cement is: 0.5%; CaCl 2 The mass ratio to cement is 0.3%; the mass ratio of U-type expansion agent to cement is: 30%; the mass ratio of crystalline sodium sulfate to cement is: 4.5%; the mass ratio of tributyl phosphate to cement is: 3.0% .

Embodiment 2

[0027] In this embodiment, the DBB concrete pavement crack repair material uses cement as the matrix material, and adds water, styrene butadiene emulsion, JS waterproof emulsion, lons-p type polycarboxylic acid water reducing agent, and CaCl to the cement. 2 , U-shaped expansion agent (codenamed UEA), crystalline sodium sulfate (Na 2 SO 4 ·10H 2 O) and tributyl phosphate; wherein the mass ratio of water to cement is: 70%; the mass ratio of solid content of styrene-butadiene emulsion to cement is: 5%; the mass ratio of solid content of JS waterproof emulsion to cement is :30%; The mass ratio of lons-p type polycarboxylic acid water reducing agent to cement is: 4.5%; CaCl 2 The mass ratio to cement is 2.0%; the mass ratio of U-type expansion agent to cement is: 5%; the mass ratio of crystalline sodium sulfate to cement is: 0.3%; the mass ratio of tributyl phosphate to cement is: 0.1% .

Embodiment 3

[0029] In this embodiment, the DBB concrete pavement crack repair material uses cement as the matrix material, and adds water, styrene butadiene emulsion, JS waterproof emulsion, lons-p type polycarboxylic acid water reducing agent, and CaCl to the cement. 2 , U-shaped expansion agent (codenamed UEA), crystalline sodium sulfate (Na 2 SO 4 ·10H 2 O) and tributyl phosphate; wherein the mass ratio of the water to the cement is: 50%; the mass ratio of the solid content of the styrene-butadiene emulsion to the cement is: 10%; the solid content of the JS waterproof emulsion and the cement The mass ratio is: 10%; the mass ratio of the lons-p type polycarboxylic acid water reducing agent to cement is: 3%; CaCl 2 The mass ratio to cement is 1.0%; the mass ratio of U-type expansion agent to cement is: 10%; the mass ratio of crystalline sodium sulfate to cement is: 1%; the mass ratio of tributyl phosphate to cement is: 1% .

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Abstract

The invention discloses a DBB concrete pavement crack repair material which adopts cement as a matrix material, and the cement is added with water, butylbenzene emulsion, JS waterproof emulsion, polycarboxylic acid type water reducer, CaCl2, U-type expansive agent, crystalline sodium sulfate and tributyl phosphate, wherein the mass ratio of the water to the cement is 30-70 percent; the mass ratio of the solid content of the butylbenzene emulsion to the cement is 5-30 percent; the mass ratio of the solid content of the JS waterproof emulsion to the cement is 5-30 percent; the mass ratio of the polycarboxylic acid type water reducer to the cement is 0.5-4.5 percent; the mass ratio of CaCl2 to the cement is 0.3-2.0 percent; the mass ratio of the U-type expansive agent to the cement is 5-30 percent; the mass ratio of the crystalline sodium sulfate to the cement is 0.3-4.5 percent; and the mass ratio of the tributyl phosphate to the cement is 0.1-3.0 percent. The crack repair material has good fluidity and groutability and excellent adhesion property, compressive strength and flexural strength and has the properties of shrinkage deformation resistance, permeation resistance, corrosion resistance, wear resistance and the like.

Description

Technical field [0001] The invention belongs to the field of pavement maintenance, and relates to a pavement repairing material, in particular a repairing material suitable for DBB concrete pavement cracks. Background technique [0002] Due to the inherent characteristics of cement concrete materials, it is inevitable that cracks will occur due to the influence of various factors during the pavement construction process. Once the cracks appear, they should be repaired in time. Otherwise, under the reciprocating action of the vehicle load and the influence of environmental factors, the cracks will spread and penetrate over time, stress concentration will occur at the cracks, and the concrete will fall along the cracks and fall at the cracks. Fracture and slippage of the concrete slab destroy the integrity of the concrete pavement. When the damage develops to a certain extent, where the cracks start, cross cracks appear on the board surface, and cause other board cracks, and final...

Claims

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Application Information

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IPC IPC(8): C04B28/00
Inventor 申爱琴周灵张名成
Owner CHANGAN UNIV