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Asphalt pavement curing agent and preparation method thereof

A technology of asphalt pavement and curing agent, which is applied in the field of asphalt pavement maintenance and repair, asphalt pavement curing agent and preparation, which can solve the problems of high cost of pavement renovation, not too obvious effect, and large impact of traffic, etc., and achieve good sealing and waterproof effect , preventing or curbing the effect of loosening and falling off, and preventing water seepage on the road surface

Active Publication Date: 2010-01-06
CHONGQING SINCERE BOND PAVEMENT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the usability of the newly built pavement can be obtained, there are still some defects: the pavement renovation has a greater impact on traffic, especially for some busy urban arterial roads and expressways with a large traffic volume; in addition, the cost of pavement renovation is relatively high , waste asphalt mixture pollutes the environment
However, the effect of this technology on the treatment of cracks of 3-5 mm, asphalt aging and falling off, severe loosening and other diseases is not obvious.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 200g of coal tar pitch, 50g of toluene, 35g of xylene, 25g of ethyl acetate, 50g of anthracene, 25g of phenol, 10g of organosilicon resin (i.e. polysiloxane), 5g of dibutyl phthalate, add in the stirring tank successively, At 60°C, at a speed of 60-70 rpm, condense and reflux and stir for 0.5h, and cool to normal temperature to obtain a viscous liquid mixture as a curing agent.

[0027] Take 15g of this curing agent and mix it with 600g of 70# matrix asphalt from SK Company in Korea after aging for 85 minutes, stir well at room temperature, and set aside. The index comparison of the 70# base asphalt of Korea SK Company before and after aging, and after adding the curing agent after aging is as follows: According to T0604-2000, the penetration (0.1mm, 25°C) of 70# petroleum asphalt is 64, after 85 minutes of aging The penetration is 39, after adding curing agent, the penetration is 64.

[0028] After being applied to the aging asphalt pavement, the absolute value of...

Embodiment 2

[0030] Take 150g of petroleum asphalt (brand AH-70), 120g of thinner, 40g of C9 petroleum resin, 10g of vegetable oil, 5g of dioctyl phthalate, 10g of naphthalene, 9g of resorcinol, and 50g of lubricating oil, and add them to the stirring tank in turn In the process, at 120°C, at 60-70 rpm, condense and reflux for 2.5 hours, and cool to room temperature to obtain a viscous liquid mixture as a curing agent.

[0031] Take 15g of this curing agent and mix it with 600g of 70# matrix asphalt of SK Company in Korea after aging for 85 minutes, stir well at room temperature, and set aside. The index comparison of the 70# base asphalt of Korea SK Company before and after aging, and after adding curing agent after aging is as follows: According to T0605-1993, the ductility (cm, 15°C) of 90# petroleum asphalt is > 160, and the ductility after 85 minutes of aging 77.5, after adding curing agent, the ductility> 160.

[0032] After being applied to the aging asphalt pavement, the absolute ...

Embodiment 3

[0034] Get petroleum pitch (brand AH-90) 100g, toluene 50g, benzene 20g, butyl acetate 20g, acetone 20g, butanol 20g, p-diphenol 3g, polycyclic aromatic hydrocarbon 10g, kerosene 50g, thermoplastic polyurethane elastomer (Yantai Wanhua Produced by Polyurethane Co., Ltd., WHT-81 series) 5g, thermoplastic acrylic resin (produced by Foshan Gaoming Tongde Chemical Co., Ltd., brand AC1024) 5g, add to the stirring tank in turn, at 150 ° C, at 60 ~ 70 rpm Under the rotating speed, condense and reflux and stir for 3.0 hours, and cool to normal temperature to obtain a viscous liquid mixture as a curing agent.

[0035] Take 15g of this curing agent and mix it with 600g of 70# matrix asphalt of SK Company in Korea after aging for 85 minutes, stir well at room temperature, and set aside. The comparison of the 70# matrix asphalt of Korea SK Company before and after aging, and after aging and adding curing agent is as follows: According to T0625-2000, the softening point (°C) of 90# petrole...

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Abstract

The invention discloses asphalt pavement curing agent and a preparation process, belonging to the asphalt pavement maintenance and repair field. The curing agent formulation comprises the following components with percentage by weight, 10-15% refined asphalt, 23-50% organic solution, 3-23% surface modifier, 2-10% functional auxiliary agent and 5-25% regenerative agent. The preparation process comprises conducting reasonable proportioning for refined asphalt, organic solution and regenerative agent, surface modifier and functional auxiliary agent, putting into a stirred tank in turn, controlling stirring speed within 60-70 rotation / minute under the temperature of 60-180 DEG C, stirring for 0.5-4h in condensation reflux, and finally obtaining the product of asphalt pavement curing agent after cooling down to constant temperature. The curing agent has simple making art, low device requirement, low usage cost and simple construction technology, which can significantly increase penetration degree, softening point and ductility of aging asphalt, and has the advantages of beautifying the appearance of the asphalt pavement, improving the quality of pavement and prolonging the service life of the pavement and the like.

Description

technical field [0001] The invention relates to an asphalt pavement maintenance agent capable of reducing and regenerating aged asphalt, improving pavement performance and optimizing pavement and a preparation method thereof, belonging to the related field of asphalt pavement maintenance and repair. Background technique [0002] In recent years, semi-rigid asphalt concrete roads have become the main structural type of roads in our country. Asphalt pavement is dominated by the advantages of flat surface, comfortable driving, low noise, good vibration damping, and renewable utilization of old asphalt mixture. In the process of use, under the action of various natural factors (such as oxygen, temperature, ultraviolet rays, water, etc.) Ruts, potholes, looseness, various forms of cracking, etc. If effective maintenance measures are not taken to eliminate diseases in time, it will lead to serious damage to the pavement. The current maintenance method is mainly passive maintena...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08K5/00E01C7/00C08L57/02C08L75/04C08L33/00C08L83/00
Inventor 张会平刘帮银鄢瑛吴祥燕
Owner CHONGQING SINCERE BOND PAVEMENT MATERIALS
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