A kind of asphalt seam-filling fluid and its preparation and construction method

A technology for repairing joints and asphalt, applied in the field of pavement heavy-cross asphalt construction, can solve the problems of high temperature stability, reduced elastic recovery performance, reduced wear capacity of road surface materials, and reduced material service life, etc. High viscosity, the effect of increasing compressive properties

Active Publication Date: 2016-09-07
淄博恒信路面材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the low-temperature fluidity and permeability of heavy traffic asphalt are improved by the addition of organic solvents in the existing liquid filling materials, the high-temperature stability and elastic recovery performance of the existing liquid filling materials are reduced after filling.
As a result, the filling material of the cold construction method in summer is easy to overflow and is taken away by the vehicle; in winter, the material of the seam tape and seam strip is embedded in the crack under the long-term driving action, resulting in the thinning of the road surface material and reducing the wear capacity. And the performance of a single structural form reduces the service life of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiments 1 to 5 are specific implementations of the construction method using an asphalt seam-filling fluid in the present invention. Wherein embodiment 1 is the best embodiment. In the examples, nickel dibutyl dithiocarbamate is abbreviated as anti-aging agent NBC; N,N`-di(β-naphthyl)-p-phenylenediamine is abbreviated as anti-aging agent DNP.

Embodiment 1

[0034] The formula of the asphalt seam filling liquid in this example is made of the following components by weight: 45 parts of heavy traffic asphalt with a penetration of 70#, 8 parts of styrene butadiene copolymer, 45 parts of kerosene, and 2.5 parts of dispersant , 3.7 parts of methyl tin mercaptide, 0.15 parts of antioxidant, 1 part of buna rubber, and 1.5 parts of filler. Among them, the dispersant is vinyl bis stearamide mixed with zinc stearate or magnesium stearate in a weight ratio of 1:1; the antioxidant is an anti-aging agent NBC and an anti-aging agent DNP mixed in a weight ratio of 1:1; The filler is made by mixing silicon carbide and zircon powder in a weight ratio of 2:1.

[0035] The preparation method of the present embodiment asphalt seam-filling liquid is:

[0036] 1) Add heavy traffic asphalt into the reactor and raise the temperature to 160~190°C;

[0037] 2) Slowly add styrene butadiene copolymer, methyl tin mercaptide, antioxidant, dispersant, and fil...

Embodiment 2

[0045] The formula of the asphalt seam filling fluid in this embodiment is made of the following components by weight: The formula of the asphalt joint filling fluid in this embodiment is made of the following components by weight: 50 parts of heavy-duty asphalt with a penetration of 90# , 8 parts of styrene butadiene copolymer, 50 parts of kerosene, 3 parts of dispersant, 4.5 parts of methyl tin mercaptide, 0.2 parts of antioxidant, 2 parts of butadiene rubber, and 1.5 parts of filler. Wherein, the dispersant is vinyl bis stearamide mixed with zinc stearate or magnesium stearate in a weight ratio of 1:2; the antioxidant is formed by mixing antioxidant NBC and antioxidant DNP in a weight ratio of 1:1; 1.5 parts of the filler is made by mixing silicon carbide and zircon powder in a weight ratio of 2:1.

[0046] The preparation method of the present embodiment asphalt seam-filling liquid is:

[0047] 1) Add heavy traffic asphalt into the reactor and raise the temperature to 180...

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PUM

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Abstract

An asphalt seam-filling fluid and its preparation and construction methods belong to the technical field of heavy traffic asphalt construction on road surfaces. It is made of the following components by weight: 40~60 parts of heavy traffic asphalt, 5~10 parts of styrene butadiene copolymer, 30~60 parts of kerosene, 1~4 parts of dispersant, 1~ 5 parts, antioxidant 0.1~0.3 parts, butadiene rubber 0.5~3 parts, filler 1~3 parts. The construction method of the asphalt seam-filling fluid comprises the steps of brushing, dust removal, seam filling and seam pasting. The asphalt seam filling fluid has high viscosity and elongation performance, can be completed without heating and without the aid of joint filling equipment, and the construction effect is good in weather resistance and wear resistance.

Description

technical field [0001] An asphalt seam-filling fluid and its preparation and construction methods belong to the technical field of heavy traffic asphalt construction on road surfaces. Background technique [0002] After the heavy traffic asphalt pavement is finished and put into use, pavement cracks will appear due to various factors. Although the initial stage of pavement crack formation has little effect on the use of the pavement, if it is not closed in time, the expansion of pavement cracks will gradually weaken the bearing capacity of the road structure. Stability problems, resulting in network cracks, cracks, pits and other phenomena. The bearing capacity of the road is reduced and the service life of the road is reduced. Therefore, timely potting of pavement cracks is extremely important to prolong the service life of the pavement and reduce the cost of pavement maintenance. [0003] The existing crack treatment technology mostly adopts the hot construction method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L91/00C08K5/58C08K3/34C08K5/20C08K5/098C08K5/39
Inventor 高伟
Owner 淄博恒信路面材料有限公司
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