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A kind of large particle size rubber block modified asphalt mastic gravel seal layer and its preparation method

A technology of modified asphalt and crushed stone seal layer, which is applied to cohesive pavement paved on site, roads, roads, etc., can solve the problems of unstable quality, large energy consumption, and high cost, and achieve the reduction of stress intensity factor and reduction of Energy consumption and cost, the effect of low production cost

Inactive Publication Date: 2017-01-18
NANJING TONGAN ROAD ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of high energy consumption, high cost and unstable quality in the prior art, and provide a large particle size rubber block modified asphalt mastic gravel seal and its production method

Method used

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  • A kind of large particle size rubber block modified asphalt mastic gravel seal layer and its preparation method
  • A kind of large particle size rubber block modified asphalt mastic gravel seal layer and its preparation method
  • A kind of large particle size rubber block modified asphalt mastic gravel seal layer and its preparation method

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Embodiment Construction

[0046] Refer to attached figure 1 , a large-diameter rubber block modified asphalt mastic macadam seal layer of the present invention is composed of aggregates, fibers and rubber block modified asphalt, and the aggregates are crushed stones with a particle size of 9.5 mm to 13.2 mm , according to the aggregate weight of 0.2 to 0.5% of the rubber block modified asphalt for pre-coating; the fibers are lignin flocculent fibers, and the mixing ratio of the fibers is 3% to 5% of the mass of the rubber block modified asphalt ;

[0047] The crushed stone material is hard stone, clean, free of weathered particles, and nearly cubic particles.

[0048] The crushed stone is rolled by impact crusher.

[0049] The temperature of the pre-wrapping is above 120°C, and the stacking time of the pre-wrapping aggregates should not exceed two weeks.

[0050] The preparation method of the large-diameter rubber block modified asphalt mastic gravel seal layer comprises the following steps,

[0051]...

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Abstract

The invention discloses a large-grain-diameter rubber block-modified asphalt mastic and gravel sealing layer and a preparation method thereof, and relates to a pavement structure layer consisting of large-grain-diameter rubber block-modified asphalt and fiber together with single-grain-diameter gravels, and a preparation method thereof. The large-grain-diameter rubber block-modified asphalt mastic and gravel sealing layer consists of aggregate, fiber and rubber block-modified asphalt. The preparation method comprises the following steps: 1) sweeping, blowing dust and cleaning an underlayer; 2) preparing the rubber block-modified asphalt; 3) preparing the rubber block-modified asphalt mastic; 4) before sprinkling the rubber asphalt mastic, inspecting various indexes; 5) sprinkling the rubber block-modified asphalt mastic; 6) scattering and paving the gravels; 7) performing rolling compaction; 8) sweeping the large-grain-diameter rubber block-modified asphalt mastic and gravel sealing layer. The large-grain-diameter rubber block-modified asphalt mastic and gravel sealing layer is low in production cost, low in energy consumption, free of pollution and high in storage stability. The preparation method is convenient in construction, simple and feasible, and can be easily applied to industrial production.

Description

technical field [0001] The invention relates to a large-diameter rubber block modified asphalt mastic gravel seal layer and a manufacturing method thereof, which relate to a pavement structure layer composed of large-diameter rubber block-modified asphalt and fibers together with single-grain gravel. its production method. Background technique [0002] The vast majority of asphalt pavements in my country use semi-rigid water-stabilized bases. However, due to the characteristics of semi-rigid base materials, reflective cracks are easily generated. In addition, in the road reconstruction project, cracks exist at the joints of old and new pavement and develop into reflective cracks. The appearance of reflective cracks destroys the integrity and continuity of the pavement structure, causes other early diseases, accelerates the destruction of asphalt pavement, and greatly reduces the service life of the road. [0003] In recent years, rubber asphalt stress absorbing layers have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/26E01C7/35
Inventor 余波吴明亮王力施小强羊林林刘勇
Owner NANJING TONGAN ROAD ENG
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