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Pavement joint sealing material and preparation method thereof

A technology for filling joints and solvent refining, which can be used in building thermal insulation materials, roads, roads, etc., can solve the problems of high cost and complex components, and achieve the effects of good elasticity, improved low temperature performance, and easy production and deployment.

Active Publication Date: 2009-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material has good performance, but the components are complex and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Heating petroleum asphalt with an Ic value of 0.56 to 145°C, adding 10% SBS (molecular weight: 160,000) and 9% extracted oil (minus the extracted oil in the process of producing lubricating oil base oil by solvent refining of the four-line distillate oil, the same below), The shear speed is 3500r / min, the shear time is 45min, the preparation temperature is 175°C, the mixture is uniformly dispersed, and the performance of the road surface joint filling material is measured, see Table 1.

Embodiment 2

[0018] Heat petroleum asphalt with an Ic value of 0.52 to 145°C, add 13% SBS (molecular weight: 160,000) and 9% minus four-line extraction oil, shear speed 3500r / min, shear time 45min, preparation temperature 175°C, mix Disperse evenly, measure the properties of the road surface joint filler, see Table 1.

Embodiment 3

[0020] Heat petroleum asphalt with an Ic value of 0.56 to 145°C, add 13% SBS (molecular weight: 160,000) and 12% four-line extraction oil, shear speed 3500r / min, shear time 45min, preparation temperature 175°C, mix Disperse evenly, measure the properties of the road surface joint filler, see Table 1.

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PUM

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Abstract

The invention provides a pavement joint sealing material. The joint sealing material comprises the following components: 65 to 85 percent of petroleum asphalt, 9 to 18 percent of extract oil and 6 to 17 percent of styrene-butadiene-styrene segmented copolymer. The preparation method is as follows: the asphalt is heated to a temperature of between 100 and 200 DEG C; and the extract oil and the styrene-butadiene-styrene segmented copolymer are added and sheared for 35 to 95 minutes at a maintained preparation temperature of between 160 and 180 DEG C and at a shearing velocity of between 3,500 and 4,500 revolutions per minute until the mixture is uniformly mixed, and the pavement joint sealing material is obtained. The joint sealing material has the characteristics of simple components, good high temperature and low temperature resistance, and capability of being used for paving a pavement crack.

Description

technical field [0001] The invention relates to a pavement joint filling material and a preparation method thereof. The pavement caulking material can be used for paving and repairing pavement cracks. Background technique [0002] With the continuous increase of road traffic volume and vehicle load, the early failure phenomenon of physical projects such as asphalt pavement highways, elevated roads, and overpasses that have been put into use is also becoming more and more obvious. Therefore, the maintenance technology aimed at ensuring long-term operation of road surfaces is gradually being accepted focus on. [0003] According to the survey, one of the reasons for the early failure of the pavement is that the pavement cracks under the action of load shear, stress shrinkage and other factors, allowing rainwater and snow water to enter the interior of the road body through the cracks, causing the pavement to disintegrate and fail from the cracks. According to the experience ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00E01C11/02C08L53/02
Inventor 范思远徐青柏陈杰张诚
Owner CHINA PETROLEUM & CHEM CORP
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