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Road wearing layer construction technology

A construction technology, wear layer technology, applied in the field of road and bridge engineering construction, can solve the problems that the asphalt road construction technology cannot meet the requirements of anti-skid, wear resistance and noise reduction of urban road construction, achieve good promotion and application prospects, and increase viscosity , the effect of reducing traffic impact

Inactive Publication Date: 2018-10-02
施敏敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing technology and the asphalt road construction technology announced by the above patents cannot meet the increasingly stringent anti-skid, wear resistance and noise reduction requirements in urban road construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation technical scheme of described a kind of modified asphalt is:

[0030] 13Kg of SBS particles, 12Kg of rubber powder, 76Kg of asphalt, 0.5Kg of methyl silanol / silicate crosslinked polymer, 0.07Kg of 1,1`-bis(dimethylsilyl) iron, 0.09 The molybdenum acetylacetonate of Kg is heated to 160°C, keeps the temperature constant and stirs for 55min, adds 0.9 Kg of nano-hydrotalcite and 5Kg of ethylene glycol, 0.6Kg of 1-decanethiol, and then carries out the asphalt mixture Stirring and shearing result in a modified asphalt.

[0031] The sample number is DV-1.

Embodiment 2

[0033] A road wear layer construction technology, the technical scheme is as follows:

[0034] Step A, the preparation of asphalt mixture, the asphalt mixture consists of 60kg of modified asphalt, 100kg of coarse aggregate, 90kg of fine aggregate, 50kg of slag powder, 2kg of polyester fiber and 0.5kg of alkaline limestone slag powder Heat to 170°C, stir for 5 minutes, and then leave the market at 175°C;

[0035] Step B, pre-pavement treatment, thoroughly deal with the existing quality defects of the pavement before construction, eliminate quality hazards, remove potholes, block cracks and wrapping and other diseases and restore them with hot-mix asphalt mixture, clean and fill the pavement cracks , use high-pressure fans to clean the road surface and keep the road surface clean and dry;

[0036] Step C, Sprinkle modified asphalt, spread the modified asphalt on the surface of the construction section, control the temperature of the modified asphalt to spray at 120°C, and the p...

Embodiment 3

[0044] A road wear layer construction technology, the technical scheme is as follows:

[0045] Step A, the preparation of asphalt mixture, the asphalt mixture is heated by the modified asphalt of 80kg, the coarse aggregate of 120kg, the fine aggregate of 110kg, the slag powder of 60kg, the polyester fiber of 5kg and the alkaline limestone mineral powder of 1kg to 190°C, stir for 10 minutes, and then leave the market at 185°C;

[0046]Step B, pre-pavement treatment, thoroughly deal with the existing quality defects of the pavement before construction, eliminate quality hazards, remove potholes, block cracks and wrapping and other diseases and restore them with hot-mix asphalt mixture, clean and fill the pavement cracks , use high-pressure fans to clean the road surface and keep the road surface clean and dry;

[0047] Step C. Sprinkle modified asphalt, spray the modified asphalt on the surface of the construction section, control the temperature of the modified asphalt to spra...

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Abstract

The invention relates to the technical field of engineering construction, and specifically discloses a road wearing layer construction technology. The construction technology mainly comprises following steps: preparing an asphalt mixture, preprocessing a pavement, spraying modified asphalt, paving the mixture, rolling the mixture, carrying out examination, and using the road. A modified asphalt isused to increase the viscosity of the mixture, the indexes of the mixture are guaranteed at a high / low temperature; the problem that in a conventional ultra-thin wearing layer technology, the degradation of construction depth, draining performance, and noise reducing effect is too quick and severe is solved; the influence caused by construction on the traffic is reduced, and the technology has agood application and popularization prospect.

Description

technical field [0001] The invention relates to the technical field of road and bridge engineering construction, in particular to a construction technology of road wearing layers. Background technique [0002] Asphalt concrete pavement has the advantages of smooth surface, comfortable driving, wear resistance, low noise, short construction period, and easy maintenance and repair, so asphalt pavement structure is often used in most highways and urban roads newly built and renovated. Asphalt pavement construction and maintenance technology has received widespread attention. [0003] CN101343853A provides a road construction method of high modulus asphalt concrete. Powder, stir for 43-50 seconds at a temperature range of 165-175°C; and spread at a temperature of 160-165°C. The high-modulus asphalt concrete pavement paved by the construction method of the invention has remarkable mechanical strength, high-temperature stability and durability, reasonable construction period, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/35C04B26/26
CPCE01C7/353C04B26/26C04B2111/0075C04B18/12C04B14/06C04B18/141C04B16/0683C04B14/28
Inventor 施敏敏
Owner 施敏敏
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