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Full-thickness ultrathin long-service-life pavement structure and construction method thereof

A pavement structure, long-life technology, applied in chemical instruments and methods, roads, roads, etc., can solve the problems of easy reflection of cracks in the base layer to the surface layer, easy occurrence of ruts and pothole diseases, and inability to ensure construction quality. The effect of obvious synergy between layers, high bonding strength between layers, and reducing the thickness of pavement structural layers

Active Publication Date: 2021-04-30
SHANDONG TRAFFIC PLANNING DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The improvement of the performance of asphalt mixture and the increase of the number and thickness of the pavement structure have improved the durability of the asphalt pavement structure to a certain extent, but they cannot fundamentally solve the weak fatigue load resistance of this type of asphalt pavement structure itself. Shear failure easily occurs between the gaps, cracks in the base layer are easy to reflect to the surface layer, rutting and pitting diseases are easy to occur, etc.
Moreover, many new problems have been brought about, such as the application of a large number of asphalt modifiers and asphalt mixture admixtures, which increases the project cost, and the application of modifiers of different types, batches and qualities leads to difficulties in project quality control, and relatively Large pavement structure layer thickness and more pavement structure layers lead to an increase in the amount of construction materials such as sand, soil, cement and asphalt, which increases the cost and construction difficulty, and cannot guarantee the construction quality

Method used

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  • Full-thickness ultrathin long-service-life pavement structure and construction method thereof
  • Full-thickness ultrathin long-service-life pavement structure and construction method thereof
  • Full-thickness ultrathin long-service-life pavement structure and construction method thereof

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Embodiment 1

[0043] Example 1 Preparation of full-thickness ultra-thin long-life pavement structure

[0044] 1. Pavement structure composition

[0045] as attached figure 1 As shown, the full-thick ultra-thin long-life pavement structure of this embodiment is paved from bottom to top by a composite coupling layer 1, an anti-fatigue layer 2, a load-bearing layer 3, a high-strength bonding layer 4 and an anti-skid wear layer 5. On top of the embankment. The composite coupling layer consists of a graded crushed stone layer and an open-graded large-size permeable polyurethane crushed stone mixture layer from bottom to top. The technical indicators of the graded crushed stone layer are shown in Table 1. The open-graded large-diameter permeable polyurethane gravel mixture layer is prepared by mixing the mineral material and the polyurethane cement in proportion to a skeleton pore structure mixture with a porosity of 15% to 20%. The mineral material is composed of 0~3mm, 3~5mm, 5~10mm, 10~20mm...

Embodiment 2

[0075] Embodiment 2 Comparison of full-thickness ultra-thin long-life pavement structures

[0076] 1. Advantages of pavement structure composition

[0077] The typical full-thickness long-life asphalt pavement and combined long-life asphalt pavement are selected for comparative analysis. The pavement structure is shown in Table 6. The total thickness of the full-thickness ultra-thin long-life asphalt pavement is only 81.0% and 41.5% of the structure two and three. The thickness of the long-life pavement has been greatly reduced.

[0078] Table 6 Pavement structure and thickness

[0079]

[0080] 2. Cost advantage of pavement structure

[0081] Taking an expressway with a length of 1km and a width of 25m as an example, according to the current market price of materials, the amount and cost of various materials for the three pavement structures proposed in Table 6 are calculated, and the calculation results are shown in Table 7.

[0082] Table 7 Consumption and cost of three...

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Abstract

The invention discloses a full-thickness ultrathin long-service-life pavement structure and a construction method thereof. According to the method, a pavement structure layer with different functions is prepared by matching a polyurethane material with different mineral aggregates, and the full-thickness ultrathin long-service-life pavement structure is synthesized according to the functional difference of the structure layer; the pavement structure is good in overall stability, high in interlayer bonding strength, high in fatigue load resistance, small in structural layer number and small in structural layer thickness, and the service life of the pavement structure can be effectively prolonged.

Description

technical field [0001] The invention relates to a full-thick ultra-thin long-life pavement structure and a construction method thereof, belonging to the field of road engineering. Background technique [0002] Contemporary road technology is transforming to the "fifth generation" intelligent road characterized by durability, greenness and intelligence. Among them, the research and development of long-life pavement technology is one of the core goals. The construction of long-life pavement can reduce the excessive life caused by frequent maintenance Cycle cost, reduce waste of resources, guarantee the excellent rate of pavement performance and traffic capacity of the road network, and long-life pavement is an effective way to reduce life-cycle cost and user cost. [0003] At present, semi-rigid base asphalt pavement or full-thickness asphalt pavement structure is mostly used for long-life pavement, and the service life of the pavement is mainly extended by the following metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32C04B26/16C04B26/26C08L75/04C08L67/00C08K3/26C08K3/04C04B111/20
CPCE01C7/32C04B26/16C04B26/26C08L75/04C04B2111/00284C04B2111/0075C04B2201/50C04B2111/20C08K2003/265C04B14/28C04B38/0041C04B18/22C04B18/141C08L67/00C08K3/26C08K3/04C04B2111/00612E01C7/30E01C7/185E01C7/325B32B7/12B32B2264/0207B32B2255/26B32B11/12B32B7/022B32B2307/744B32B2264/108B32B2255/04B32B19/02B32B2264/0292B32B5/30B32B2307/732B32B5/16B32B2264/303B32B2307/552B32B2264/104C04B20/0076C04B38/0074C04B18/20C04B14/022C04B24/003C04B14/14C04B14/34C04B24/243E01C19/002
Inventor 毕玉峰孙敏庄伟陈赛陈昊王健
Owner SHANDONG TRAFFIC PLANNING DESIGN INST
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