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HFST high-friction resin surface structure and preparation method thereof

A high-friction, superficial technology, applied in the direction of on-site coagulation pavement, roads, buildings, etc., can solve the problems of stone falling off particles, reduced structural depth, insufficient cohesion, etc., and achieves low crushing value, Good angularity, improved flatness and roughness

Active Publication Date: 2022-05-10
JIANGSU CHANGLU ENERGY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, due to the use of asphalt binder, the adhesion between the stone and the stone is often insufficient, which may easily cause the stone to fall off under the action of the driving tires; secondly, the asphalt binder is easy to oil and the mortar to float under high temperature conditions. The structural depth is reduced; moreover, only dense steel slag aggregates are used, and there is no consideration for noise reduction; finally, only macroscopic steel slag aggregates are used to provide structural depth, and microscopic anti-skid enhanced abrasive layers are not sprayed to further improve anti-skid performance

Method used

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  • HFST high-friction resin surface structure and preparation method thereof
  • HFST high-friction resin surface structure and preparation method thereof
  • HFST high-friction resin surface structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: Construction is carried out on the asphalt pavement of a heavy-duty expressway in Jiangsu according to the following steps:

[0055] (1) Spray the super-sticky modified epoxy resin layer on the original asphalt pavement. The super-sticky modified epoxy resin bonding layer is configured in the mixing pipe of the spraying equipment according to the proportion of each component. According to The calculation of mass parts includes 45 parts of bisphenol A glycidyl ether type epoxy resin, 25 parts of methyl tetrahydrophthalic anhydride curing agent, 15 parts of toughened polyacrylate, 10 parts of silicone, and 5 parts of glass fiber. The mixer is stirred for 1 minute, the mixing tube is 1.5m long, the diameter is 50mm, and the rotating speed is 250R.p.m. Multiple extrusion spraying equipment are used for simultaneous stirring and simultaneous spraying. The extrusion pressure is 0.9Mpa, and the spraying amount is 2kg / m 2 , the spraying thickness is 2mm, and the d...

Embodiment 2

[0062] Example 2: A HFST high friction resin surface structure and its preparation method

[0063] In order to solve the cracking problem caused by the inconsistency between the surface of the high-friction resin and the asphalt pavement, and further improve its anti-skid performance and reduce noise, this technology has been improved.

[0064] The overtaking lane of an expressway in Jiangsu has been in operation for more than 10 years, and the anti-skid performance has declined. It is urgent to carry out anti-skid improvement. The construction is carried out according to the following steps:

[0065] (1) Spray a flexible resin coordinated sealing layer on the original asphalt pavement, so that the surface of the high friction resin can be deformed in harmony with the original asphalt pavement. The flexible resin is configured in the mixing tube of the spraying equipment according to the proportion of each component. Calculated according to the mass parts, it consists of 40 pa...

Embodiment 3

[0073] Embodiment 3: HFST high friction resin surface structure and its preparation method

[0074] In order to further solve the problems of local peeling and high noise on the surface of high-friction resin, and further improve its anti-skid performance, this technology has been improved. This invention is implemented in a heavy lane of an expressway with an operation period of more than 10 years, as follows Step construction:

[0075] (1) Using the W2000 ultra-precision milling process of the multi-point laser leveling system to perform ultra-precise milling on the original asphalt pavement, the number of milling drums is 1100, the laser leveling system has 6 points, and the driving speed is 2m / min , the milling depth is 7mm, and the flatness index IRI after milling is 1.3m / km.

[0076] (2) After the ultra-precise milling, use the Case cleaning machine to preliminarily clean the milled objects on the interface, open the traffic for 1 day, use the impact force and shear str...

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Abstract

The invention relates to the technical field of pavement engineering modification, in particular to an HFST high-friction resin surface structure and a preparation method thereof. The surface structure sequentially comprises a flexible resin coordination sealing layer (1), an elastic rubber particle mute layer (2), a super-viscous modified epoxy resin bonding layer (3), a macroscopic aggregate anti-skid wearing layer (4) and a microcosmic anti-skid reinforced frosted layer (5) from bottom to top. The surface structure is very excellent in skid resistance, noise reduction performance and ultraviolet aging resistance, overlay peeling can be prevented, water damage to an original asphalt pavement is prevented, oil flooding is avoided at the high temperature in summer, a cementing material never rises, and insufficient structure depth and skid resistance cannot be caused.

Description

technical field [0001] The invention relates to the technical field of road surface engineering transformation, in particular to a HFST high-friction resin surface structure and a preparation method thereof. Background technique [0002] With the progress and development of society, people's requirements for road use functions are gradually increasing. Anti-slip pavement plays an important role in reducing vehicle collision accidents and personal casualties, and has long been highly concerned by the society and the industry. With the continuous accumulation of service life, the overall anti-skid performance of expressway pavement in my country has declined significantly, seriously affecting driving safety. [0003] Anti-slip pavement technologies at home and abroad are also constantly being explored and applied. Some achievements have been made in anti-slip technologies such as OGFC, Noavachip, and asphalt gravel seals. But there are also some bottlenecks, such as the lack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C11/00E01C11/24E01C7/32C04B41/71C04B41/68
CPCE01C11/005E01C11/24E01C7/32C04B41/5024C04B41/68C04B41/009C04B41/52C04B41/71C04B26/26C04B41/4543C04B41/4545C04B41/4853C04B41/46C04B41/483C04B41/4905C04B41/5022C04B41/5031C04B41/4896C04B41/4892C04B41/48
Inventor 陈李峰张辉张皓东丁炜孟华
Owner JIANGSU CHANGLU ENERGY TECH DEV CO LTD
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