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

A technology of asphalt crushing and wrapping, which is applied in the field of asphalt pavement engineering to achieve the effects of reducing environmental pollution, preventing water damage, and enhancing durability and service life

Inactive Publication Date: 2008-09-17
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 specification 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 octadecyltrimethylbenzyl 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 the field of asphalt pavement and relates to a coating material for treating stone materials as asphalt macadam seal coat and a method for treating stone materials. The inventive coating material comprises 27-52 wt% of petroleum asphalt, 0.6-4 wt% of cationic asphalt emulsifier, 1-5 wt% of tackifier, 0-8 wt% of diluting agent and water. The production method thereof comprises: the petroleum asphalt is diluted with the diluting agent and then heated or is directly heated, and is emulsified to obtain a concentrated asphalt emulsion; and the concentrated asphalt emulsion is mixed with an aqueous solution of the tackifier, to obtain the coating material. The method for treating stone materials as asphalt macadam seal coat comprises: the stone materials are sorted, washed and sieved, and then the coating material is sprayed onto the surface of the stone materials at room temperature. After the stone materials are treated with the coating material, the bonding performance of the stone material to the asphalt binder is improved, thereby avoiding the looseness and stripping of stone materials in the road surface and improving the driving safety.

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 Applications(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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