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Covering material for treating asphalt macadam seal coat stone material and method for treating stone material

A kind of asphalt crushed stone, coating technology, applied in the field of asphalt pavement engineering, to achieve the effect of reducing interfacial tension, easy to use, and good permeability

Inactive Publication Date: 2009-12-09
陕西长大博源公路养护科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to overcome the shortcomings existing in the existing stone pretreatment technology, and to provide a coating material that is easy to use, low in cost, and has good adhesion between stone and asphalt binder for treating asphalt gravel seal layer stone. and methods of processing stone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Screening of stone materials: pass the stone materials to be processed through the stone material shaping machine to reduce the content of needle flake stone materials and make the stone materials in block shape, so as to meet the requirements of asphalt gravel seal layer technology.

[0025] 2) Clean the stone: wash the shaped stone with water to remove the floating and sinking on the surface of the stone, and then dry or air dry naturally.

[0026] 3) Screening of stone materials: According to the regulations on particle size specifications of coarse aggregate in JTG F40-2004 "Technical Specifications for Highway Asphalt Pavement Construction" in the industry standard of the People's Republic of China, taking into account the characteristics and requirements of asphalt gravel seal layer technology, clean and dry The stones passed through the multi-stage sieve are divided into 4 grades of single-size stones with a particle size of 3-5mm, 5-10mm, 10-15mm and 10-20mm, ...

Embodiment 2

[0034] Heat 27kg of Korean SK90 asphalt to 100-120°C, then add 0.6kg of tallow-based propylenediamine emulsifier into 32.4kg of water at 60-70°C to stir and dissolve; add tallow-based propylenediamine aqueous solution to the colloid mill , then slowly add asphalt at 100-120°C to tallow-based propylenediamine aqueous solution, emulsify for 3 minutes to obtain concentrated asphalt emulsion; add 1kg of natural rubber latex tackifier to 39kg of normal temperature drinking water, stir evenly, and then Add the aqueous solution of natural rubber latex into the concentrated asphalt latex, and stir manually or mechanically for 3 minutes to obtain 100kg of coating material.

[0035] The coating material is sprayed on the stone with the specification of S12, the process is the same as in Example 1, wherein the weight ratio of the coating material to the stone is 0.8:100.

Embodiment 3

[0037] 100Kg cladding material is by 8kg kerosene, 52kg Huanxiling No. 70 asphalt, 4kg octadecyl trimethyl benzyl ammonium chloride emulsifier, 5kg liquid styrene-butadiene-styrene tackifier and water according to the embodiment 1, wherein the heating temperature of the asphalt and kerosene mixture is 110-120°C. The weight ratio of the cladding material to the S10 stone is 0.2:100, and the spraying process is the same as in Example 1.

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Abstract

The invention belongs to asphalt pavement engineering, and relates to a coating material for treating asphalt gravel sealing layer stone materials and a method for processing the stone materials. The cladding material of the invention is composed of 27-52% petroleum asphalt, 0.6-4% cationic asphalt emulsifier, 1-5% tackifier, 0-8% diluent and water. The preparation process is as follows: dilute petroleum asphalt with diluent, heat, or directly heat petroleum asphalt, and then emulsify to obtain concentrated asphalt emulsion, and then add tackifier aqueous solution to the concentrated asphalt emulsion to obtain the coating material of the present invention. The method for processing the crushed stone sealing layer stone material of the present invention is as follows: screening, cleaning and sieving the stone material, and then spraying the above-mentioned coating material on the surface of the stone material at normal temperature. After the stone is treated with the coating material of the present invention, the adhesion performance between the stone and the asphalt binder can be significantly improved, the loosening and peeling of the stone in the road surface can be greatly reduced, and the driving safety can be improved.

Description

technical field [0001] The invention belongs to the field of asphalt pavement engineering, in particular to a coating material for treating asphalt gravel sealing layer stones and a method for treating the stones. Background technique [0002] Asphalt gravel sealing technology is a kind of technology that sprinkles a certain amount of crushed stone immediately after spraying asphalt cement, and makes 2 / 3 of the crushed stone embedded in the cement after rolling to form a durable and anti-skid thin seal layer technology. Because of its excellent anti-skid, water sealing performance, good follower deformation ability, low cost, simple construction process, and fast construction speed, the crushed stone seal technology has been widely used in the wear layer, surface layer and existing roads of new roads. preventive maintenance of roads. [0003] Stone is usually according to SiO 2 Content greater than 65%, 65% to 52% and less than 52% are divided into acidic, neutral and alka...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/10
Inventor 徐玮商博明徐刚徐培华刘炜峰
Owner 陕西长大博源公路养护科技有限公司
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