High grade highway pavement double-layer micro-surfacing and construction method thereof

A micro-surface, high-level technology, applied in the direction of roads, roads, and on-site coagulation pavement, can solve the problems of difficult to ensure uniformity of paving thickness, difficult to ensure uniform thickness of paving, peeling, etc. The effect of open traffic time, short construction period and fast forming speed

Inactive Publication Date: 2005-09-14
西安高远公路养护技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of micro-surfacing is mainly that there are limitations to the maintenance and repair of the road surface. Since the construction method of one-time paving is often used for micro-surfacing, it is difficult to ensure uniform paving thickness. During the construction process, one-time paving Formed micro-surfaces are often prone to "bright bands" on the surface of the sealant, which is difficult to effectively improve in the actual construction process
In some road sections with heavy traffic, due to high-load driving, the structural depth of the road surface has been completely lost, the road surface is too slippery, and there is no material hanging. Peeling occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Pave a waterproof layer on the road surface, and pave an anti-skid wear layer on the waterproof layer. Taking 100kg aggregate as an example to pave a waterproof layer with a thickness of 5-8mm, the raw materials and their weight ratios are as follows:

[0066] Medium and coarse stone chips 25kg

[0067] Fine stone chips 75kg

[0068] Polymer modified cationic emulsified asphalt 12kg

[0069] water 8kg

[0070] Portland cement 2kg

[0071] Aluminum sulfate 0.2kg

[0072] The particle size of medium and coarse stone chips in the waterproof layer is 3-5mm, and the particle size of fine stone chips is 0.075-3mm. The medium-coarse stone materials and fine stone chips are mixed into aggregates. The weight ratio of stone chips to fine stone chips is 1:3, Portland cement is 325# Portland cement, 425# Portland cement or other grades of Portland cement can also be used.

[0073] Lay an anti-skid wear layer with a thickness of 10-13mm on the waterproof layer. Taking 100kg of ...

Embodiment 2

[0099] Pave a waterproof layer on the road surface, and pave an anti-skid wear layer on the waterproof layer. Taking 100kg aggregate as an example to pave a waterproof layer with a thickness of 5-8mm, the raw materials and their weight ratios are as follows:

[0100] Medium and coarse stone chips 33kg

[0101] Fine stone chips 67kg

[0102] Polymer modified cationic emulsified asphalt 8kg

[0103] water 11kg

[0104] Portland cement 4kg

[0105] Aluminum sulfate 0.1kg

[0106] The particle size of medium and coarse stone chips in the waterproof layer is 3-5mm, and the particle size of fine stone chips is 0.075-3mm. The medium-coarse stone materials and fine stone chips are mixed into aggregates. In its proportion, The weight ratio of medium and coarse stone chips to fine stone chips is 1:2. The Portland cement is 325# Portland cement, and 425# Portland cement or other grades of Portland cement can also be used.

[0107] Lay an anti-skid wear layer with a thickness of 10-1...

Embodiment 3

[0118] Pave a waterproof layer on the road surface, and pave an anti-skid wear layer on the waterproof layer. Taking 100kg aggregate as an example to pave a waterproof layer with a thickness of 5-8mm, the raw materials and their weight ratios are as follows:

[0119] Medium and coarse stone chips 16.6kg

[0120] Fine stone chips 83.4kg

[0121] Polymer modified cationic emulsified asphalt 16kg

[0122] water 6kg

[0123] Portland cement 1kg

[0124]Aluminum sulfate 0.5kg

[0125] The particle size of medium and coarse stone chips in the waterproof layer is 3-4mm, and the particle size of fine stone chips is 0.075-3mm. The medium-coarse stone materials and fine stone chips are mixed into aggregates. The weight ratio of stone chips to fine stone chips is 1:5. The Portland cement is 325# Portland cement, and 425# Portland cement or other grades of Portland cement can also be used.

[0126] Lay an anti-skid wear layer with a thickness of 10-13mm on the waterproof layer. Takin...

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Abstract

The invention relates to a high grade road surface double layer micro-process and the construction method. The construction water proof layer is laid on the road surface, and a skid resistance wearing coat is laid on the construction water proof layer. The amounts by weight or volume of water proof layer is that: aggregate is 100; polymer modification positive ion emulsified asphalt is 8 to 16; water is 6 to 11; Portland cement or slaked lime is 1 to 4; and additive is 0.1 to 0.5. The amounts by weight of skid resistance wearing coat is that: aggregate is 100; polymer modification positive ion emulsified asphalt is 6 to 11; water is 7 to 13; Portland cement or slaked lime is 1 to 3; and additive is 0.1 to 0.5. The construction process is the following steps: cleaning the road surface, laying out, laying water proof layer, laying skid resistance wearing coat, early days conserving and quality checking out. The invention is reasonable designed, good performance of water proof, and fast moulding.

Description

technical field [0001] The invention belongs to the technical field of coagulating pavement paved on site for roads or airports, in particular to a pavement paved on site with several layers of different materials. Background technique [0002] Slurry seal layer is a pavement with a certain thickness formed by mixing emulsified asphalt, graded mineral materials, fillers, water and additives in a certain proportion into a paste-like flow mixture under normal temperature conditions, and paving it on the road surface in time. The thin layer plays the role of waterproof, anti-slip, wear-resistant and restores the function of the road surface. It is mainly used for the maintenance of the asphalt pavement of ordinary roads. Currently, it is less used in the maintenance of the asphalt pavement of the expressway. This kind of sealing layer can improve the water resistance and anti-skid performance of the road surface. According to the maximum particle size of the aggregate in the sl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18
Inventor 刘廷国乔朝增徐培华王俊明李朝昌陈梁
Owner 西安高远公路养护技术有限公司
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