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Distributed type road surface treatment construction method

A technology of road surface and construction method, applied in the field of dispersive road surface treatment construction, can solve problems such as obstruction of traffic, flashover of asphalt materials, etc.

Inactive Publication Date: 2012-09-12
LIAONING PROVINCIAL TRANSPORTATION PLANNING & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to prevent such splashing of aggregates, it is conceivable to increase the amount of asphalt material to be spread to thicken the layer of asphalt material, thereby strongly bonding the aggregates. In summer, etc., when the temperature of the road surface rises, there will be a flash fire phenomenon caused by excessive asphalt materials, which will hinder traffic instead.

Method used

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  • Distributed type road surface treatment construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Use motorway, within the scope of width 1m, length 2m, carry out construction according to the construction method of scattered road surface treatment of the present invention. After heating the construction area to about 60° C. using a heating screed, the foaming agent was first spread towards the road surface using a test injector, and immediately thereafter the bituminous material was spread towards the road surface using the same test injector. The foaming agent and bituminous material are mixed on the pavement, producing abundant foaming, thus spreading the aggregate rapidly. After dispersing the aggregate, the aggregate dispersing surface is fully rolled with vibrating rollers, and the operation is completed.

[0055] The materials used are as follows.

[0056]

[0057] Asphalt material: Petroleum asphalt

[0058] Scattering amount: 1.0(l / m 2 )

[0059] Spreading temperature: 170°C

[0060]

[0061] Foaming agent: Alicyclic surfactant 10% by weight aqueou...

Embodiment 2

[0070] The asphalt material and the foaming agent were sprayed simultaneously using a test multi-column sprayer, and the two were contacted and mixed in the air to form a layer of foamed asphalt material on the road surface. Bituminous materials except that the spreading amount is 1.1(l / m 2 ) except that the conditions of Example 1 were the same, and the following materials were used as the blowing agent. In addition, in the same manner as in Example 1, construction was carried out on a road surface with a width of 1 m and a length of 2 m of a motorway according to the method of spraying road surface treatment of the present invention.

[0071]

[0072] Foaming agent: Alicyclic surfactant 3% by weight aqueous solution Dispersion amount: 0.1 (l / m 2 )

[0073] Dispersion temperature: 84°C

Embodiment 3

[0075]The same asphalt material as in Example 1 is introduced into a stirring type foaming machine according to 100 parts by volume, and the same foaming agent as in Example 1 is used according to 3 parts by volume, and stirred and mixed for foaming. The heated screed was heated to about 80°C to spread the foamed asphalt material on the construction road surface with a width of 1m and a length of 2m. The amount of dispersion is converted to 1.2 (l / m) based on the asphalt material before foaming 2 ). Immediately after spreading the foamed bituminous material, the same aggregate as in Example 1 was spread. The spraying temperature and spraying amount of the aggregate are also the same as in Example 1. Then, in the same manner as in Example 1, the scattering surface of the aggregate was sufficiently rolled by the vibrating roll, and the operation was terminated.

[0076] In order to compare with the present invention, the following three comparative examples were performed.

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Abstract

The invention belongs to the field of road construction and particularly relates to a distributed type road surface treatment construction method, which can fixedly bond aggregates on the road surface without using excessive asphalt material. The distributed type road surface treatment construction method comprises the process of forming an asphalt material layer in a foaming state on the road surface and the process of spreading the aggregates on the asphalt material layer in the foaming state. According to the distributed type road surface treatment construction method provided by the invention, the distributed asphalt material exists on the road surface in the state of foaming and increasing volume, therefore, even though the amount of the asphalt material does not result in flash burn phenomenon, the surface of the distributed aggregates in a large area can be fully covered, and the aggregates as well as the aggregates and the road surface can be fixedly bonded.

Description

technical field [0001] The invention belongs to the field of road construction, and in particular relates to a distributive road surface treatment construction method, and more specifically, to a disseminated road surface treatment construction method in which aggregate is dispersed on a foamed asphalt material. Background technique [0002] Conventionally, as paved roads are used for traffic, aging and deterioration gradually increase, and the pavement surface may be worn and uneven, or cracks may appear on the paved surface. If these unevenness and cracks are left unattended, the safety of passing vehicles may be threatened, and the pavement itself may be damaged due to rainwater, etc. penetrating from the cracks into the interior of the pavement. [0003] As methods for repairing such aged and deteriorated paved roads, conventionally, a spray-type road surface treatment construction method, a hybrid road surface treatment construction method, and a covering-type construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18E01C7/22
Inventor 不公告发明人
Owner LIAONING PROVINCIAL TRANSPORTATION PLANNING & DESIGN INST
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