Construction method of open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer

A technology of epoxy asphalt and construction method, which is applied in the directions of roads, pavement details, gutter/curbstone, etc. The effect of sliding performance, short construction time and simple construction process

Inactive Publication Date: 2020-04-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the construction of epoxy asphalt, the epoxy asphalt is often sprayed on the ground first, and then the single particle size aggregate is laid. This method cannot make the aggregate and cementing material well combined, and it is easy to form a dense structure, which is not conducive to anti-skid

Method used

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  • Construction method of open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer
  • Construction method of open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer
  • Construction method of open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , the overall flow of the construction method of the open-graded drainage type epoxy asphalt ultra-thin wear layer of the present invention is shown in the figure.

[0029] Step 1 Surface interlayer treatment: 12 hours before the wear layer is paved, clean the pavement surface and spray a layer of modified emulsified asphalt mixed with rubber on the surface of the densely graded asphalt concrete layer, at a rate of 0.5L / m 2 Sprinkle, fully break demulsification and play the role of high adhesion and water sealing.

[0030] Step 2: Prepare epoxy asphalt: take epoxy resin as component A, and form component B with 98.7% petroleum asphalt, 0.4% acid anhydride curing agent, and 0.9% TPS high viscosity modifier. The component A is heated to 55° C., the component B is heated to 120° C. and then stirred evenly according to the content of the component A being 38%, to obtain an epoxy asphalt cement for use. The properties of the samples were measured as:

[0031]...

Embodiment 2

[0039] Step 1 Surface interlayer treatment: 12 hours before the wear layer is paved, clean the pavement surface and spray a layer of modified emulsified asphalt mixed with rubber on the surface of the densely graded asphalt concrete layer, at a rate of 0.5L / m 2 Sprinkle, fully break demulsification and play the role of high adhesion and water sealing.

[0040] Step 2: Prepare epoxy asphalt: take epoxy resin as component A, and form component B with 99% petroleum asphalt, 0.3% acid anhydride curing agent, and 0.7% TPS high viscosity modifier. The component A is heated to 60° C., the component B is heated to 120° C. and then stirred evenly according to the content of the component A at 45%, to obtain an epoxy asphalt binder for later use. The properties of the samples were measured as:

[0041] nature unit test value 60℃ dynamic viscosity Pa·s 65000 23℃ density g cm 3

1.32 epoxy equivalent / 205 Softening Point ℃ 90 Penetrati...

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Abstract

The invention provides a construction method of an open-graded drainage type epoxy asphalt ultrathin anti-skid wearing layer, and belongs to the technical field of highway construction. The anti-skidwearing layer is composed of an open-graded epoxy asphalt mixture with the porosity ranging from 15% to 20%, and the total thickness of the anti-skid wearing layer is about 1 cm. The invention aims toprovide the construction method of the ultrathin anti-skid wearing layer for improving the drainage property and the skid resistance of the pavement. Starting from the whole process of mixing, transporting, paving, rolling and the like, the formed wearing layer has enough pavement performance and plays a role in surface layer drainage, the phenomenon of water drifting generated when an automobileruns at a high speed is reduced, the contact area of tires and a road surface is increased, and the anti-skid capacity is improved; the thickness of the wearing layer is controlled to be about 1 cm,the ultrathin anti-skid wearing layer is formed, the construction cost is reduced, and the traffic opening time after construction is shortened.

Description

technical field [0001] The invention belongs to highway construction technology, in particular to a construction method for an open-graded drainage type epoxy asphalt ultra-thin anti-slip wear layer. Background technique [0002] With the rapid development of my country's economy, the further improvement of the level of science and technology, and the continuous advancement of the "transportation power" strategy, my country's transportation industry has achieved unprecedented development, and it has also put forward newer and higher requirements for road infrastructure construction. When the road network is accessible and the bearing capacity of the road surface is sufficient, the safety, comfort and functionality of the road have become the focus of attention, and the economy is also the main factor to be considered. As an important indicator of road safety and a main functional requirement, pavement skid resistance has become a very concerned aspect in road construction. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/35E01C11/22E01C11/24
CPCE01C7/35E01C7/353E01C11/226E01C11/24
Inventor 黄晓明蒋永茂马涛马柏杨黄怡
Owner SOUTHEAST UNIV
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