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Ultra-thin wearing course and construction method thereof

A wear layer, ultra-thin technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of insufficient bonding strength, peeling of mixtures, etc., and achieve high softening point, good aging ductility, and extended service life. Effect

Inactive Publication Date: 2013-12-25
广西国创道路材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, the bonding strength between the ultra-thin wear layer mixture and the original road surface is very important, such as the Chinese invention patent with the publication number CN102863182A, the rubber asphalt ultra-thin wear layer mixture for preventive maintenance, which is composed of rubber asphalt and aggregate Due to the insufficient bonding strength with the original road surface, the ultra-thin wear layer is prone to peeling off of the mixture under the combined action of the vehicle and the natural environment

Method used

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  • Ultra-thin wearing course and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] When the design porosity of the mixture in the ultra-thin composite modified asphalt wear layer 1 is 3%-6% discontinuous dense gradation, the SBS and rubber powder composite modified asphalt contains 80.7-87.8 parts of AH-70# matrix asphalt, 2-3 parts of SBS modifier, 10-14 parts of rubber powder, 0-2 parts of compatibilizer, 0.2-0.3 parts of stabilizer, forming low SBS and high rubber powder composite modified asphalt, composite modified asphalt is modified by rubber powder The properties of composite modified asphalt are better than rubber powder modification, and the high temperature stability of composite modified asphalt ultra-thin wear layer 1 is superior.

[0034] Raw material preparation:

[0035] (1) Preparation of bonding layer 2 materials: take 18 parts of 60 mesh rubber powder, 82 parts of base asphalt, and 0.25 parts of stabilizer. The base asphalt is heated to 180°C, the rubber powder is poured into the base asphalt and stirred for 2.5 hours, and then the stab...

Embodiment 2

[0053] When the designed porosity of the composite modified asphalt ultra-thin wear layer 1 is a discontinuous half-open gradation with a porosity greater than 10%, the SBS and rubber powder composite modified asphalt contains 91.7-95.3 parts of AH-70# matrix asphalt, SBS3.5 -4 parts, rubber powder 1-4 parts, stabilizer 0.2-0.3 parts, to form high SBS low rubber powder modified asphalt, SBS and rubber powder composite modified asphalt is SBS modified asphalt (ID) properties. High SBS and low content rubber powder can also be used in discontinuous dense gradation mixture (SMA).

[0054] Raw material preparation:

[0055] (1) The adhesive layer 2 adopts the rubber powder modified asphalt of Example 1.

[0056] (2) Preparation of materials for composite modified asphalt ultra-thin wear layer 1. The composite modified asphalt ultra-thin wear layer 1 includes 4.9 parts of SBS and rubber powder composite modified asphalt, 100 parts of aggregate, and 3 parts of filler, wherein the aggrega...

Embodiment 3

[0067] The composite modified asphalt ultra-thin wear layer 1 has a discontinuous dense gradation with a design porosity of 3%-6%. The SBS and rubber powder composite modified asphalt contains 93.8 parts of AH-70# base asphalt, 4 parts of linear SBS modifier, 2 parts of rubber powder, and 0.2 parts of stabilizer. The base asphalt is divided into 42 parts of group A and group B 25.9 copies, group C 25.9 copies. Others were carried out according to Example 2 to prepare SBS and rubber powder composite modified asphalt.

[0068] Raw material preparation:

[0069] (1) The adhesive layer adopts the rubber powder modified asphalt of Example 1.

[0070] (2) Preparation of materials for composite modified asphalt ultra-thin wear layer 1. The composite modified asphalt ultra-thin wear layer 1 includes 5.9 parts of SBS and rubber powder composite modified asphalt, 100 parts of aggregates, 10 parts of fillers, and 0.3 parts of fibers. The aggregate includes 85 parts of coarse aggregate and 1...

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Abstract

The invention discloses an ultra-thin wearing course and a construction method thereof. The ultra-thin wearing course comprises a bonding course and a compound modification asphalt ultra-thin wearing source arranged on the upper surface of the bonding course. The compound modification asphalt ultra-thin wearing source is an SBS rubber powder compound modification asphalt ultra-thin wearing course. The SBS rubber powder compound modification asphalt ultra-thin wearing course is used as an ultra-thin wearing course mat coat and is easy to compact. The compaction construction problem is solved (the mixing amount of SBS gauge of existing SBS rubber powder compound modification asphalt is high, the existing SBS rubber powder compound modification asphalt is used for structure layers (>=4cm) and is difficult to compact, and popularization difficulty is large), the effects of aging resistance and viscosity increase of rubber powder are utilized, performance of mixtures is improved, the purpose of changing the disadvantages for profits is achieved, and popularization and use of compound modification asphalt are facilitated.

Description

Technical field [0001] The invention relates to a preventive maintenance treatment technology for high-grade pavement, in particular to an ultra-thin wear layer and a construction method thereof. Background technique [0002] Preventive maintenance technology is to evaluate road conditions through pavement detection. When road diseases appear in the early stage, maintenance technologies are used in time to avoid pavement diseases deep into the base layer or structural irreversible diseases, so that the pavement can regain good road conditions and delay or avoid major repairs. Expensive fees. [0003] Ultra-thin wear layer technology can be used for new roads, mainly used when road diseases appear early. At present, the domestic ultra-thin wear layer technology is mainly based on Main or in On the basis, replace the mixture with SMA, OGFC grade mixture. Due to the construction cost, the ultra-thin wear layer technology is difficult to use on the early disease-free pavement. [00...

Claims

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Application Information

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IPC IPC(8): E01C7/35C08L95/00C08L53/02C08L21/00
Inventor 杨鹰吕华生彭斌吉永海仲春南高雷燕张树领
Owner 广西国创道路材料有限公司
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