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High-performance road surface fissures cementing materials and preparing process

A technology for filling seam materials and road pavements, which is applied in the field of road building materials to achieve the effects of strong viscosity and toughness, long service life and good elastic recovery performance.

Inactive Publication Date: 2005-02-23
吉林省交通科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no better filling material to deal with at present, this invention proposes a new high-performance material for treating cracks in the road surface, which can effectively repair the cracks in the road surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Heat the modified asphalt (SBS) to 135°C, add 5% of 160# high aromatic oil, stir with a stirring device, add 17% of rubber powder and 4% of dibutyl phthalate and stir together Uniform, the low-temperature ductility (5°C) of the obtained mixture is greater than 60 cm, the penetration index PI is 6.0, the equivalent softening point is 68°C, the equivalent brittle point reaches -78°C, and the elastic recovery at room temperature can reach 99%.

Embodiment 2

[0014] Example 2: Heat the modified asphalt (PAV) to 145°C, add 7% of 120# high aromatic oil, stir with a stirring device, add 20% of rubber powder and 5% of dioctyl phthalate and stir together Uniform, the low-temperature ductility of the obtained mixture is greater than 70 cm, the penetration index PI is 6.7, the equivalent softening point is 76°C, the equivalent brittle point reaches -95°C, and the elastic recovery can reach 99%.

Embodiment 3

[0015] Embodiment 3: Modified asphalt (SBS) is heated to 140 ℃, adds 9% 140# high aromatic hydrocarbon oil, is stirred by stirring device, adds 24% styrene-butadiene rubber powder and 7% dibutyl phthalate at the same time Stir evenly with the fat, the obtained mixture has a low-temperature ductility of 64 cm, a penetration index of 6.6, an equivalent softening point of 78°C, an equivalent brittle point of -87°C, and an elastic recovery of 99%.

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Abstract

The present invention provides a railway surface joint-filling material with high-performance and its production process. It is made up by using modified asphalt, aromatic hydrocarbon oil, styrene-butadiene rubber powder and plasticizer according weight portion ratio, and its production process includes the following steps: heating modified asphalt to 130-150 deg.C, adding 4-10 weght portions of aromatic hydrocarbon oil, stirring them by using stirrer, at the same time of stirring adding 15-25 weight portios of rubber powder and 3-8 weight portions of plasticizer, stirring them at 130 deg.C. The low-temp. ductility of said invented material (5 deg.C) is greater than 60 cm., its penetration index (PI) is 4.0-7.0, equivalent softening point can be up to 60-85 deg.C equivalent brittle point can be up to -60- -100 deg.C, elastic recovery can be up to 98-100% and normal service life can be up to above 5 years.

Description

Technical field: [0001] The invention provides a high-performance road pavement potting material, which is used for filling and repairing cracks and joints of asphalt pavement and cement concrete pavement, and is especially suitable for filling and repairing road surface cracks in regions with cold seasons. At the same time, it also discloses its The production process belongs to the technical field of road building materials. Background technique: [0002] With the progress of society, road construction is advancing by leaps and bounds, and various diseases will appear during the use of the road surface. Pavement cracks are one of the main diseases, including longitudinal joints, transverse joints, and construction joints. At present, ordinary matrix asphalt or emulsified asphalt is used to fill joints in asphalt pavement, which can only be used normally for one year. In the second year, due to low temperature shrinkage and cracking in winter, the joints must be refilled in...

Claims

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Application Information

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IPC IPC(8): E01C7/22
Inventor 韩继国时成林孙延忠王晓珂陈东丰王达亮
Owner 吉林省交通科学研究所
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