Asphalt pavement structural body with heat insulation and cooling course and constructing method thereof

A technology for asphalt pavement, heat insulation and cooling, which is applied to the coagulation pavement, roads, roads and other directions paved on site. It can solve the problems of cracking, long-term safe operation of asphalt pavement stability threats to vehicles, and pavement frost heave, etc., and achieve social benefits. Significantly, reduce the heat island effect, and improve the effect of temperature fatigue life

Inactive Publication Date: 2018-06-19
张昆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, the trend of global warming directly affects the further heating of asphalt pavement in the south and north of my country, which will further aggravate the hazards such as frost heave, muddying, subsidence, and cracking on the road surface that vehicles often encounter when driving, thus affecting the stability of asphalt pavement and the long-term stability of vehicles. Security operations are facing adverse effects and great threats

Method used

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  • Asphalt pavement structural body with heat insulation and cooling course and constructing method thereof
  • Asphalt pavement structural body with heat insulation and cooling course and constructing method thereof
  • Asphalt pavement structural body with heat insulation and cooling course and constructing method thereof

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Embodiment 1

[0044] figure 1It is a schematic diagram of the cold recycling structure of 2-2-2-1-1-5-1 layer asphalt concrete pavement. In the road surface overhaul project of a certain section of expressway in Hebei Province, an embodiment of the comprehensive application of mechanical coating material method, single-layer coating method and interlayer method, the brief steps and methods of paving and repairing from bottom to top are: retain the original Pavement base (2): old lime soil lower base (2) with a thickness of 20 cm; old limestone gravel upper base (2) with a thickness of 20 cm. Then pave the foamed asphalt regeneration base (2) with a thickness of 29cm; then pave the AC-25 (No. 70 asphalt) asphalt concrete lower layer (1) with a thickness of 6cm; pave the AC-16 modified asphalt concrete with a thickness of 4cm Surface layer (1); then add an integral material layer (5) on the surface of the clean and dry middle surface layer (1): first spray a polyurea elastomer ("SPUA") mater...

Embodiment 2

[0046] figure 2 It is a schematic diagram of 2-2-1-1-1-5-1 layer type large particle size asphalt concrete pavement. An embodiment of comprehensively using the single-layer coating method and the coating method, the brief steps and methods of paving from bottom to top are: first pave the lower base (2) of 5% cement stabilized gravel with a thickness of 36cm; 10cm thick LSPM-25 large particle size asphalt concrete upper base (2); then pave the AC-20 type asphalt concrete lower layer (1) with a thickness of 6cm; then pave the AC-20 type asphalt concrete middle surface layer with a thickness of 6cm (1); then pave the thick 2cm SMA-13 ​​asphalt concrete anti-skid wear surface (1); then spray a layer of material layer (5) on the surface of the clean, dry anti-skid wear surface (1), To achieve single-layer paving, the specific spraying is the coating layer (5), that is, the ZS-411 radiation cooling coating with a film thickness of 0.2mm to 0.5mm, preferably with a film thickness o...

Embodiment 3

[0052] image 3 It is a schematic diagram of 2-2-1-1-5-5-1 layer rubber asphalt concrete pavement. It can be applied to highways in areas such as Hubei. An embodiment of comprehensively using the heat insulation and cooling body method, the layered paving method and the double-layer coating method, the brief steps and methods of paving the pavement layer from bottom to top are: first pave 4% cement with a thickness of 20cm to stabilize Gravel subbase (2); then pave the 5% cement stabilized macadam base (2) with a thickness of 36cm; pave the AC-25 (No. 70 asphalt) asphalt concrete lower layer (1) with a thickness of 7cm; pave then 6cm thick AR-AC-20 asphalt concrete middle surface course (1); then pave additional material layer (5), namely AR-SAMI type Strara stress absorbing surface course (5) with a thickness of 2.5cm; add another layer of material Layer (5), that is, spray the thick 2mm SPUA material layer (5), such as spraying with the new polyurethane spraying machine of...

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Abstract

The invention discloses an asphalt pavement structural body with a heat insulation and cooling course and a constructing method thereof. The asphalt pavement structural body with the heat insulation and cooling course comprises an asphalt pavement layer (1), a base course (2), a cushion course (3) and a compacted soil base course (4) and is characterized in that additional courses (5) are laid inthe asphalt pavement layer (1), the base course (2) and the cushion course (3); the additional courses (5) are one or two of SPUA material courses, coating courses, STP plate courses, geosynthetic material courses and aerogel courses; and the constructing method is a heat insulation and cooling body method, a patching method, a sandwich method, a coating method and so on. The asphalt pavement structural body with the heat insulation and cooling course has the advantages that the construction is simple and convenient, the construction effect is higher, the construction material cost is low, theweather resistance is strong, and the service life is long. The asphalt pavement structural body with the heat insulation and cooling course can be widely applied to asphalt concrete pavement and cement concrete pavement highways; the temperature of the asphalt pavement can be reduced in all dimensions, the service life of the pavement can be prolonged, and the pavement stability and running safety can be enhanced.

Description

technical field [0001] The invention relates to an asphalt pavement structure, in particular to the application technical field of an asphalt pavement structure with an additional heat insulation and cooling layer. Background technique [0002] Since the temperature of asphalt concrete changes with the change of the ambient temperature, its volumetric deformation also changes with the change of the ambient temperature. nearly doubled in volume.” It can be seen that the ambient temperature is the biggest factor affecting the high temperature stability of asphalt concrete. [0003] In addition, the trend of global warming directly affects the further heating of asphalt pavement in the south and north of my country, which will further aggravate the hazards of frost heaving, muddying, subsidence and cracking on the road surface when vehicles are driving, thus making the stability of asphalt pavement and the long-term stability of vehicles Security operations are faced with adve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32
CPCE01C7/32
Inventor 张昆
Owner 张昆
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