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Two-component normal-temperature curing crack pouring material for bituminous pavement

A technology of filling joint material and curing at room temperature. It is used in building thermal insulation materials, building components, buildings, etc. It can solve the problems of high temperature stability, low temperature stability, elastic recovery performance, weather resistance, corrosion resistance and self-healing ability. Into the depths of the pavement cracks, the hot asphaltene materials are easy to cool and other problems, to achieve the effect of good market prospects, low production costs, and high bonding strength

Active Publication Date: 2015-06-10
HENAN LUJIA ROAD & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used joint filling materials are: (1) asphaltene material hot filling method. This method mainly heats asphalt or modified asphalt and then fills the joints. The main defect is that the hot asphaltene material poured into the cracks is easy to cool. It is easy to enter the depth of the cracks in the road surface, and there is also the problem that the poured asphalt is easily carried away by the wheels before it is bonded to the cold old road surface
(2) Asphalt material room temperature irrigation method. This method mainly uses emulsified asphalt or high-viscosity emulsified asphalt to fill joints. It is characterized by low viscosity and is suitable for small cracks and construction at room temperature. However, high temperature stability, low temperature stability, Insufficient elastic recovery performance, weather resistance, corrosion resistance and self-healing ability
The addition of bitumen is not covered in this patent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A two-component normal temperature curing joint filling material for asphalt pavement, which consists of two components A and B, wherein:

[0028] The weight composition of component A: 100 parts of mercapto-modified polyurethane, 20 parts of asphalt (base petroleum asphalt), 25 parts of dibutyl phthalate (DBP), 50 parts of active ground calcium carbonate, anti-ultraviolet agent (UV -327) 0.2 parts, antioxidant (AT-215) 0.1 parts, 2,4,6-tris(dimethylaminomethyl)phenol 2 parts.

[0029] The weight composition of component B: 80 parts of glycidyl ether liquid epoxy resin, 20 parts of diglycidyl ether, 20 parts of active ground calcium carbonate, and 10 parts of dibutyl phthalate (DBP).

[0030] Mercaptool-modified polyurethane is prepared through the following steps: 1) 600g of polypropylene oxide diol (PPG-206) with a molecular weight of 600 and 300g of polypropylene oxide triol (PPG-330) with a molecular weight of 3000 , at 120°C, 0.01MPa vacuum dehydration for 2 hours...

Embodiment 2

[0033] A two-component normal temperature curing joint filling material for asphalt pavement, which consists of two components A and B, wherein:

[0034]The weight composition of component A: 80 parts of mercapto-modified polyurethane, 30 parts of Indonesian Buton rock asphalt, 10 parts of dioctyl phthalate (DOP), 2 parts of bis(2-dimethylaminoethyl) ether, 0.5 part of anti-ultraviolet agent (UV-327), 0.5 part of antioxidant (antioxidant 1010).

[0035] Composition by weight of component B: 80 parts of glycidyl ester liquid epoxy resin, 10 parts of n-butyl glycidyl ether, 20 parts of barium sulfate, and 10 parts of dioctyl phthalate (DOP).

[0036] Mercaptool-modified polyurethane was prepared through the following steps: (1) 1000g of polyester diol with a viscosity of 500mPa.s at 25°C and 300g of polypropylene oxide triol (PPG-330) with a molecular weight of 3000, At 120°C, vacuum dehydration at 0.01MPa for 2 hours, and cool to room temperature. Add 4,4'-diphenylmethane dii...

Embodiment 3

[0039] A two-component normal temperature curing joint filling material for asphalt pavement, which consists of two components A and B, wherein:

[0040] Weight composition of component A: 100 parts of mercapto-modified polyurethane, 50 parts of base petroleum asphalt, 25 parts of dihexyl phthalate (DHP), 50 parts of active ground calcium carbonate, N, N, N ， , N ， - 0.8 part of tetramethylalkylene diamine, 0.2 part of anti-ultraviolet agent (UV-328), 0.1 part of antioxidant (AT-1076).

[0041] Composition by weight of component B: 60 parts of glycidylamine liquid epoxy resin, 20 parts of glycidyl methacrylate, 30 parts of kaolin, and 10 parts of dihexyl phthalate (DHP).

[0042] Mercaptool-modified polyurethane is prepared through the following steps: (1) 2000g of polypropylene oxide diol (PPG-240) with a molecular weight of 4000 and polypropylene oxide triol (PPG-330) with a molecular weight of 3000 300g, at 120°C, 0.01MPa vacuum dehydration for 2.5 hours, cooled to room t...

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Abstract

Disclosed is a two-component normal-temperature curing crack pouring material for a bituminous pavement. The crack pouring material is composed of a component A and a component B, and the component A is composed of, by weight, 50 parts to 100 parts of mercaptan modified polyurethane, 20 parts to 50 parts of asphalt, 0 part to 200 parts of fillers, 10 parts to 50 parts of plasticizers, 0.3 part to one part of ageing resistant agent and 0.5 part to three parts of curing accelerators. The component B is composed of, by weight, 50 parts to 100 parts of liquid epoxy resin, 10 parts to 30 parts of reactive diluent, 0 part to 30 parts of fillers and 10 parts to 50 parts of plasticizers. The compatibility of the mercaptan modified polyurethane and the asphalt is good, the prepared crack pouring material can be cured at normal temperature, can be pasted with high-polarity stone well, and can be pasted with non-polar asphalt, the breaking strength of a body of the material is 6.28 MPa, and the elongation at break of the body is 560 percent. The pasting breaking strength of the crack pouring material and asphalt concrete is 3.62 MPa, and the elongation at break of the crack pouring material and the asphalt concrete is 426 percent.

Description

technical field [0001] The invention relates to a pavement patching material, in particular to a two-component normal-temperature curing joint filling material for asphalt pavement. Background technique [0002] Asphalt concrete pavement has the advantages of smooth surface, comfortable driving, wear resistance, low noise, short construction period, easy maintenance and repair, etc., and it has become the dominant structural form in the construction of high-grade highways. However, cracks in asphalt pavement are a difficult problem that has plagued road engineering circles at home and abroad, and has not been well resolved so far. The existence of cracks allows road surface water, air and other harmful substances to penetrate into the interior of the pavement structure through the gaps, and penetrate into the pavement base and subgrade along the pores of the mixture, making the pavement base and subgrade soft, resulting in pumping, mud, and erosion. And frost heave, and the...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08L95/00C08L63/00C08G18/66C08G18/38
Inventor 张茂亮杨艳娟张永军赵磊王光辉郑超张银峰张慧张晶晶陈鑫喻荣稳胡浩然
Owner HENAN LUJIA ROAD & BRIDGE