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A kind of ultra-thin wearing layer for road and preparation method thereof

A wear layer, ultra-thin technology, applied in the direction of roads, roads, buildings, etc., can solve the problems of poor anti-skid performance, high price, poor durability, etc., to ensure firm bonding, easy rolling molding, and preservation of integrity Effect

Active Publication Date: 2021-10-15
厦门华特公路沥青技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the currently used ultra-thin wear layer technologies are semi-open or open-graded asphalt mixtures. In order to ensure inter-layer bonding and prevent road surface water seepage, the technical application must be modified with a large amount of spraying. The emulsified asphalt sticky layer is used, and the construction must use an integrated machine that can carry out emulsified asphalt spreading and asphalt mixture paving simultaneously.
However, the above-mentioned all-in-one machine manufacturing has not yet been localized, and imported paving equipment is required for construction, which is expensive and difficult to master, which restricts the application of ultra-thin wear layer technology to a certain extent
[0004] In order to expand the ease of construction, a traditional thin-layer embedded asphalt mixture overlay was tried; however, the effect was not satisfactory, and the problem of interlayer adhesion frequently occurred
At the same time, the ultra-thin wear layer paved with traditional embedded asphalt mixture has a small depth of pavement surface structure, and its anti-skid performance is not as good as that of open-graded or semi-open-graded asphalt mixture, and its anti-skid performance decays quickly. In addition, the above-mentioned asphalt mixture generally has compaction quality problems, early water damage is common on the road surface, and the durability is poor
[0005] Therefore, the ultra-thin wear layer system currently used in road surface preventive maintenance construction has a strong dependence on foreign technology, which is not conducive to the application and development of this technology in my country

Method used

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  • A kind of ultra-thin wearing layer for road and preparation method thereof
  • A kind of ultra-thin wearing layer for road and preparation method thereof
  • A kind of ultra-thin wearing layer for road and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embedded modified asphalt mix material composition:

[0061] Asphalt: polymer modified asphalt

[0062] Rough assembly: basalt rock

[0063] Fine agrees: brilliant rock chopper

[0064] Filler: limestone mineral powder

[0065] Polyester fiber: 6mm short cut polyester fiber

[0066] The composition ratio of above the test design is shown in Table 5:

[0067] Table 5 Composition ratio of embedded modified asphalt mix material

[0068]

[0069] Embedded modified asphalt mix material grade:

[0070] The embedded modified asphalt mixture mineral level prepared according to the composition shown in Table 5 is shown in Table 6:

[0071] Table 6 Embedded modified asphalt mixture ore

[0072]

[0073] Compact, solid, asphalt mix material volume indicator

[0074] The e-solid modified asphalt mixture prepared according to the composition shown in Table 5, is aged at a temperature of 140 ± 5 ° C for 2 h, and then in unit pressure of 600 ± 18 kPa, the rotation angle is 1.25 ± 0.02 ...

Embodiment 2

[0085] The present invention performs road performance and interlayer bond testing of ultra-thin abrasive tapes formed by the existing emulsified asphalt spray and thermal blends mixing materials. The results are as follows:

[0086] Modified asphalt mixture material composition

[0087] Asphalt: polymer modified asphalt

[0088] Rough assembly: basalt rock

[0089] Fine agrees: brilliant rock chopper

[0090] Filler: limestone mineral powder

[0091] The composition ratio of the above materials above the test is shown in Table 9:

[0092] Table 9 Modification ratio of modified asphalt mixture material

[0093]

[0094] Modified asphalt mixture ore

[0095] The ultra-thin abrasive layer modified asphalt mixture mineral level is shown in Table 10 according to the composition ratio shown in Table 9:

[0096] Table 10 Modified Asphalt mixture ore material level

[0097]

[0098] Compound-modified asphalt mixture volume indicator

[0099] According to the modified asphalt mixture ...

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Abstract

The invention provides an ultra-thin wearing layer for roads and a preparation method thereof. The ultra-thin wearing layer includes a connecting layer connected to the original road surface and an embedded asphalt mixture laid on the connecting layer; the connecting layer is a non-sticky Wheel modified emulsified asphalt, spray 0.2 L / m on the original road surface when the road surface temperature is not lower than 0°C 2 ~1.2L / m 2 ; The embedded asphalt mixture is laid at a temperature of 135°C to 170°C, and the layer thickness after compaction is 1.5cm to 2.5cm. In the ultra-thin wear layer technology, the present invention can adopt conventional construction equipment or special integrated machine paving equipment for construction, which reduces the technical threshold and investment cost of the ultra-thin wear layer for roads, and at the same time ensures that the ultra-thin wear layer is waterproof, and has the advantages of Graded or semi-open graded asphalt mixtures have the same anti-skid performance, which promotes the application and development of ultra-thin wear layer technology in China.

Description

Technical field [0001] The present invention belongs to the technical field of preventive road maintenance, particularly relates to a thin wear layer and a preparation method Road. Background technique [0002] Road is paved with a thin wear layer on an existing road surface in a thickness of 1.5cm thin asphalt overlay ~ 2.5cm aimed at repairing old pavement, such as loose, cracks, pits, and skid resistance rutting lack of roads and other mild disease, restore or enhance road capacity, to prevent the development of disease original pavement, extend the service life of the road, which is currently the more widely used as a preventive pavement maintenance technology. This technique has a thin, low investment costs, construction speed, skid, wear resistance, and excellent performance with passage of higher technical feasibility of many advantages, in recent years favored in domestic road maintenance projects. [0003] However, ultra-thin layer of abrasion techniques currently used m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/18E01C7/24E01C7/26
CPCE01C7/18E01C7/187E01C7/24E01C7/262
Inventor 胥亮马云容蔡智慧张翔宇
Owner 厦门华特公路沥青技术有限公司