A kind of asphalt pavement cold repair material that can quickly open traffic and preparation method thereof

A cold patching material and open traffic technology, applied in the field of road maintenance and repair, can solve the problems that the early strength of the modified emulsified asphalt mixture cannot be improved, the modification effect is not obvious, and the activity of the curing agent is not high, so as to shorten the open traffic time, Conducive to the effect of environmental protection, good low temperature operation and workability

Active Publication Date: 2019-07-30
山西省交通科技研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to its excellent mechanical properties, adhesive properties, high temperature stability and corrosion resistance, waterborne epoxy resin can improve the cohesive force, high temperature stability, elastic recovery ability, compression resistance and deformation resistance of emulsified asphalt mixture. At present, the effect of commercially available waterborne epoxy resin systems on the early strength modification of emulsified asphalt mixture is not obvious, mainly because commercially available waterborne epoxy resin systems are mostly developed for industrial coatings. In order to ensure the application period of coatings, the curing agent activity If it is applied to modified emulsified asphalt, the curing time will be long, and the early strength of the modified emulsified asphalt mixture cannot be improved, so that the open traffic time is still long

Method used

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  • A kind of asphalt pavement cold repair material that can quickly open traffic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Synthesis of water-based epoxy curing agent

[0029] 1) Bisphenol A epoxy resin E-51 and polyethylene glycol 400 were reacted at 120° C. for 6 hours in the presence of a catalyst benzyltriethylammonium chloride (1% of the total mass) to obtain an intermediate product.

[0030] 2) In the presence of p-toluenesulfonic acid, mercaptopropionic acid was reacted with the above-mentioned intermediate product at 80° C. for 4 hours, and then heated to 140° C. for 1 hour to prepare a water-based epoxy curing agent. The amount of p-toluenesulfonic acid is 3% of the total mass.

[0031] The molar ratio of the bisphenol A epoxy resin E-51, polyethylene glycol 400, and mercaptopropionic acid is 1:2:2.2.

[0032] 2. Preparation of component A:

[0033] Weigh 100 parts of limestone mineral material by mass (30 parts of particle size 9.5-16mm, 40 parts of particle size 4.75-9.5mm, 20 parts of particle size 2.36-4.75mm, 10 parts of particle size 0-2.36mm), 32.5R cement 3 parts and ...

Embodiment 2

[0042] 1. Synthesis of water-based epoxy curing agent

[0043] 1) Bisphenol A epoxy resin E-51 and polyethylene glycol 600 were reacted at 130° C. for 4 hours in the presence of a catalyst cetyltrimethylammonium chloride (amount of 2% of the total mass) to obtain an intermediate product .

[0044] 2) In the presence of p-toluenesulfonic acid, mercaptopropionic acid was reacted with the above-mentioned intermediate product at 90° C. for 3 hours, and then heated to 130° C. for 2 hours to prepare a water-based epoxy curing agent. The amount of p-toluenesulfonic acid is 2% of the total mass.

[0045] The molar ratio of the bisphenol A epoxy resin E-51, polyethylene glycol 600, and mercaptopropionic acid is 1:2.2:2.4.

[0046] 2. Preparation of component A:

[0047]Weigh 100 parts of limestone mineral material by mass (20 parts of particle size 9.5-16mm, 40 parts of particle size 4.75-9.5mm, 30 parts of particle size 2.36-4.75mm, 10 parts of particle size 0-2.36mm), 42.5R cement...

Embodiment 3

[0056] 1. Synthesis of water-based epoxy curing agent

[0057] 1) Bisphenol A epoxy resin E-44 and polyethylene glycol 400 were reacted at 125° C. for 5 h in the presence of a catalyst, benzyltriethylammonium chloride (3% of the total mass), to obtain an intermediate product.

[0058] 2) In the presence of p-toluenesulfonic acid, mercaptopropionic acid was reacted with the above-mentioned intermediate product at 85° C. for 3 hours, and then heated to 135° C. for 1 hour to prepare a water-based epoxy curing agent. The amount of p-toluenesulfonic acid is 2% of the total mass.

[0059] The molar ratio of the bisphenol A epoxy resin E-44, polyethylene glycol 400, and mercaptopropionic acid is 1:2.1:2.2.

[0060] 2. Preparation of component A:

[0061] Weigh 100 parts of limestone mineral material by mass (40 parts of particle size 9.5-16mm, 30 parts of particle size 4.75-9.5mm, 15 parts of particle size 2.36-4.75mm, 15 parts of particle size 0-2.36mm), 32.5R cement 5 parts and ...

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Abstract

The invention belongs to the technical field of road maintenance repairing and relates to an asphalt pavement cold patching material available for quick opening of traffic and a preparation method thereof; the cold patching material comprises component A, component B and component C; the component A comprises, by weight, 100 parts of limestone mineral material, and 3-5 parts of cement; the component B comprises, by weight, 100 parts of emulsified asphalt, and 40-60 parts of self-emulsified waterborne epoxy resin; the component C comprises, by weight, 100 parts of waterborne epoxy curing agent, and 30-50 parts of an accelerant. Compared with the prior art, the asphalt pavement cold patching material and the preparation method thereof have the advantages that early strength of waterborne epoxy-modified emulsified asphalt mixture can be improved to shorten the time to open the traffic; the material has good water solubility, the preparation process is simple, the preparation conditions are mild, construction is convenient and quick, skilled personnel and special equipment are not required, the material has good low-temperature operability and workability, and is free of volatile solvents, friendly to the construction environment, capable of patching a pavement quickly and good for environmental protection.

Description

technical field [0001] The invention belongs to the technical field of road maintenance and repair, and in particular relates to a cold patching material for asphalt pavement that can be opened to traffic quickly and a preparation method thereof. Background technique [0002] Today, with the vigorous development of highway construction, the traffic volume continues to increase and the axle load increases significantly, which brings obvious damage to the asphalt pavement, especially early damage such as looseness, potholes, cracks, etc., which will seriously affect the use of the road surface longevity and traffic safety. At present, hot-mix asphalt mixture is generally used in road maintenance to repair pits and other diseases, but because hot-mix asphalt mixture is greatly affected by climatic conditions, it can only be repaired on the road surface in high temperature seasons, resulting in many Road surface diseases are not repaired in time and become more serious. Emulsi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C08G59/66C08G65/331C08G81/00
CPCC04B28/04C04B2111/0075C04B2111/72C08G59/66C08G65/331C08G81/00C04B14/28C04B24/36C04B24/281C04B24/02
Inventor 裴强杜素军庞瑾瑜畅润田薛君郭赢赢
Owner 山西省交通科技研发有限公司
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