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Paving method for tropical zone road surface

A laying method and regional technology, applied to roads, roads, on-site paved coagulation pavements, etc., can solve problems such as cracking, damage, and cost increase, and overcome low strength, easy deformation, stability and strength Improvement, the effect of water resistance improvement

Inactive Publication Date: 2016-06-08
SHANGHAI CONSTRUCTION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In my country, semi-rigid asphalt pavement mainly adopts semi-rigid base, which is widely used and has mature technology, but semi-rigid asphalt pavement also has disadvantages: it is easy to crack, and after cracking, the cracks will be reflected to the road surface, so that rainwater will infiltrate and make the road suffer Rainwater damage, the semi-rigid base structure is dense and cannot quickly drain the crack water seeping down the pavement from the base, and there is no self-healing ability after damage
[0006] 3. The amount of cement is increased, and the cost increases

Method used

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  • Paving method for tropical zone road surface

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Embodiment Construction

[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings of the present invention are in simplified form and use inaccurate scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0029] The present invention provides a pavement laying method in tropical areas. It should be noted that before laying, the roadbed needs to be well planned to ensure that the roadbed of each road surface construction section has at least one rainy season settlement before construction. Specifically, we can make full use of the opportunity when the quality of the subgrade rebounds when the dry and wet seasons alternate in tropical areas. At the end of each rainy season and the beginning of the dry seaso...

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Abstract

The invention discloses a paving method for a tropical zone road surface. The paving method comprises the steps that 1, a subbase layer is renovated so as to meet the paving requirements for graded broken stone; 2, the subbase layer is paved with the graded broken stone; 3, after the effect that the graded broken stone is paved uniformly is ensured, the graded broken stone is compacted in a combination rolled mode to form a graded broken stone base layer; the compaction steps comprise that on the first day, the graded broken stone is subjected to initial rolling and re-rolling, in the first time re-rolling process, the graded broken stone is moisturized and then subjected to final rolling, and surface finishing and slurry purifying are conducted; and on the second day, the graded broken stone is re-rolled again; and 4, the surface of the graded broken stone is paved with bituminous concrete to form a surface layer. According to the paving method for the tropical zone road surface, the road surface structural design of combining the subbase layer and the graded broken stone base layer with the surface layer is adopted and has great advantages on the aspects that the reflection cracks of a tropical zone road which is located in a zone with long rainy season time and is prone to being damaged by water are prevented, the base layer can drain the water away quickly to prevent water damage, and the damage of the base layer is self-healed.

Description

technical field [0001] The invention relates to a highway pavement structure layer, in particular to a pavement laying method in tropical areas. Background technique [0002] In my country, semi-rigid asphalt pavement mainly adopts semi-rigid base, which is widely used and has mature technology, but semi-rigid asphalt pavement also has disadvantages: it is easy to crack, and after cracking, the cracks will be reflected to the road surface, so that rainwater will infiltrate and make the road suffer Rainwater damage, the semi-rigid base structure is dense and cannot quickly drain the crack water seeping down the pavement from the base, and there is no self-healing ability after damage. Although the research and application of the dense skeleton structure in recent years has improved the vitality of the application of semi-rigid bases, in general, there are relatively few practical applications of flexible bases such as graded crushed stone in China. Lack of full understanding,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E01C7/18
CPCE01C3/00E01C7/18
Inventor 辛国顺丁杰锋
Owner SHANGHAI CONSTRUCTION GROUP
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