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Asphalt strip and preparation and construction methods thereof

A technology of asphalt and rubber strips, which is applied in the direction of building components, pavement details, building insulation materials, etc., can solve the problems of thinning road surface materials, reducing wear force, high temperature stability, reducing elastic recovery performance, and reducing the service life of materials. Achieve good ductility and deformation ability, high construction efficiency and simple steps

Active Publication Date: 2014-10-22
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 asphalt are improved due to 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.
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 force , 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

[0029]Embodiments 1 to 5 are specific implementations of the construction method using an asphalt rubber strip in the present invention. Wherein embodiment 1 is the best embodiment. In the examples: 2,6-di-tert-butyl-4-methylphenol is abbreviated as antioxidant BHT); dibutyl nickel dithiocarbamate is abbreviated as antioxidant NBC); N,N`-di(β -naphthyl) p-phenylenediamine is abbreviated as anti-aging agent DNP).

[0030] Example 1

[0031] The formula of the asphalt rubber strip in this embodiment is made of the following components by weight: 80 parts of coal tar pitch, 4 parts of styrene butadiene copolymer, 11 parts of coal tar, 4 parts of filler, 3 parts of stabilizer, Oxygen agent 0.1 part. Among them, the filler is made of active calcium carbonate and silicon carbide mixed in a weight ratio of 1:1, the stabilizer is made of trioctyl phosphate and mercaptan methyl tin in a weight ratio of 1:2, and the antioxidant is made of antioxidant Agent BHT and antioxidant NBC a...

Embodiment 2

[0041] The formula of the asphalt rubber strip in this embodiment is made of the following components by weight: 75 parts of asphalt is petroleum asphalt, 3 parts of styrene-butadiene copolymer, 10 parts of solvent naphtha is aromatic oil, 6 parts of filler, stabilizer 2 parts, 0.15 parts of antioxidant. Among them, the filler is made of active calcium carbonate and silicon carbide mixed in a weight ratio of 2:1, the stabilizer is made of trioctyl phosphate and mercaptan methyl tin in a weight ratio of 1:1, and the antioxidant is made of antioxidant Agent BHT and anti-aging agent DNP are mixed in a weight ratio of 1:1.

[0042] The preparation method of the present embodiment asphalt rubber strip is:

[0043] Put asphalt, solvent oil and stabilizer into the container according to the ratio and heat it while stirring, and heat it to 180°C, add styrene butadiene copolymer, filler, stabilizer and antioxidant into the container, and stir evenly Pour the material in the container...

Embodiment 3

[0051] The formula of the asphalt rubber strip in this embodiment is made of the following components by weight: 85 parts of petroleum asphalt, 2 parts of styrene butadiene copolymer, 12 parts of diesel oil, 2 parts of filler, 3 parts of stabilizer, antioxidant 0.15 servings. Among them, 2 parts of the filler are made by mixing active calcium carbonate and silicon carbide at a weight ratio of 1:1, and 3 parts of the stabilizer are made of trioctyl phosphate and methyl tin mercaptide at a weight ratio of 1:3. 0.15 parts of anti-oxidant are mixed with antioxidant BHT and anti-aging agent DNP in a weight ratio of 1:2.

[0052] The preparation method of the present embodiment asphalt rubber strip is:

[0053] Put asphalt, solvent oil and stabilizer into the container according to the ratio and heat it while stirring, and heat it to 170°C, add styrene butadiene copolymer, filler, stabilizer and antioxidant into the container, and stir evenly Pour the material in the container int...

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Abstract

The invention discloses an asphalt strip and preparation and construction methods thereof, belonging to the technical field of asphalt pavement construction. The asphalt strip is characterized by comprising the following components in parts by weight: 70-90 parts of asphalt, 2-10 parts of a styrene-butadiene copolymer, 8-15 parts of solvent naphtha, 1-5 parts of a filler, 1-5 parts of a stabilizer and 0.1-0.3 part of an antioxidant, wherein the solvent naphtha is one of aromatic hydrocarbon oil, coal tar, diesel oil or kerosene; and the asphalt is petroleum asphalt or coal tar pitch. The construction method of the asphalt strip comprises the following steps: flushing, dedusting, caulking and welting. The asphalt strip has high viscidity and extensibility, filling of a pavement crack can be finished without heating, the construction method of the asphalt strip is short in used time, and can be finished without an assist of crack sealing equipment, and the construction effect is firm and lasting.

Description

technical field [0001] An asphalt rubber strip and its preparation and construction methods belong to the technical field of pavement asphalt construction. Background technique [0002] After the asphalt pavement pavement is completed 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 of heating and pouring the mater...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L9/06C08K3/26C08K3/34C08K5/521C08K5/58C08K5/13C08K5/39C08K5/18E01C11/02
Inventor 高伟
Owner 淄博恒信路面材料有限公司
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