Hot-distribution rubber bituminous pavement and construction method thereof

A rubber asphalt and construction method technology, applied in the field of asphalt pavement construction, can solve problems such as poor shear strength, poor fatigue resistance, and difficulty in guaranteeing construction quality, and achieve the effects of reducing road surface diseases, preventing water ingress, and delaying reflective cracks

Inactive Publication Date: 2011-03-02
BEIJING ROAD & BRIDGE CONSTR GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a thermal spray type rubber asphalt waterproof bonding layer and its construction method, to solve the problem that the existing rubber asphalt waterproof bonding layer has poor shear strength and fatigue resistance, and the construction quality is difficult to guarantee. question

Method used

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  • Hot-distribution rubber bituminous pavement and construction method thereof
  • Hot-distribution rubber bituminous pavement and construction method thereof
  • Hot-distribution rubber bituminous pavement and construction method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0042] Embodiment one sees figure 1 As shown, this hot-sprinkling rubber asphalt pavement is laid from bottom to top by a lower bearing layer 1, a rubber asphalt waterproof adhesive layer 2 and a surface layer 3, and is characterized in that: the rubber asphalt waterproof adhesive layer 2 is formed by rolling the rubber asphalt 2.1 sprayed on the lower bearing layer and the gravel 2.2 uniformly sprayed on the rubber asphalt layer simultaneously, and the spraying amount of the rubber asphalt is 2.2-2.6 kg / m 2 ; The sprinkling amount of the gravel is 60-70% of the sprinkling area of ​​the rubber asphalt.

Embodiment 2

[0043] Embodiment two see figure 2 As shown in the figure, a leveling layer is laid on the under-bearing layer of the hot-sprinkled rubber asphalt pavement, and the leveling layer is located between the under-bearing layer and the rubber asphalt waterproof bonding layer.

[0044] The underlying layer 1 is an old road surface, or a cement concrete bridge deck or road surface, or an asphalt concrete bridge deck or road surface, or a semi-rigid base.

[0045] The particle size of the crushed stone is 16-19 mm when the rubber asphalt waterproof bonding layer 2 is laid on the surface of the semi-rigid base, and the particle size of the crushed stone is 16-19 mm when the rubber asphalt waterproof bonding layer 2 is laid under the surface layer It is 1 / 3~1 / 2 of the thickness of the surface layer, and the crushed stone is a limestone material with a single particle size, and the crushed stone content beyond the particle size range is less than 10%.

[0046] When the asphalt rubber w...

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Abstract

The invention discloses hot-distribution rubber bituminous pavement and a construction method thereof. The construction method comprises the following steps: 1, cleaning a lower bearing layer; 2, preparing rubber asphalt; 3, distributing the rubber asphalt, namely, uniformly distributing a rubber asphalt layer on the lower bearing layer, wherein the distribution amount of the rubber asphalt is 2.2 to 2.6 kg/m<2>, and the distribution temperature is 180 to 190 DEG C; 4, distributing broken stone with an amount which is 60 to 70 percent based on the distribution area of the rubber asphalt, wherein the distribution temperature of the broken stone is not lower than 80 DEG C; and 5, rolling and forming, namely, rolling and forming a rubber asphalt waterproof adhesive layer by a rubber-tire pavement roller following a broken stone distribution vehicle, wherein the rubber-wire pavement roller rolls the pavement once to twice back and forth. The construction method of the invention can enhance the inter-layer adhesive performance, prevent water penetration, effectively absorb and eliminate inter-layer stress and reduce reflection cracks caused by the conventional bituminous pavement, and can be applied to the projects of building and rebuilding bituminous pavement, pavement of bituminous concrete bridge floor, bituminous overlaying of cement concrete pavement and the like.

Description

[0001] technical field [0002] The invention relates to the field of asphalt pavement construction, in particular to a rubber asphalt waterproof bonding layer and a construction method thereof. Background technique [0003] The hot-sprinkled rubber asphalt waterproof adhesive layer is a thin layer formed by spraying gravel with a certain particle size immediately after spraying asphalt binder, and then rolling. The main function of the rubber asphalt waterproof bonding layer is to close the small cracks on the surface, prevent water from invading the road surface, and damage the base and roadbed. [0004] Rubber asphalt is a structural waterproof and bonding material with excellent performance, which can be used as a waterproof, bonding and stress-absorbing functional layer in the asphalt pavement structural layer. The rubber asphalt waterproof bonding layer began to be used in the mid-1960s, and has been widely used in the United States, South Africa, Australia and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/08E01C7/32E01C7/22E01C19/17C04B26/26C04B18/22
CPCY02W30/91
Inventor 孙文龙王旭东柳浩孙西濛李美江杨丽英张卫东高政叶春琳吕嘉李伟王建国李宝生王宝新吕志前
Owner BEIJING ROAD & BRIDGE CONSTR GROUP
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