A combined ultra-thin long-life pavement structure and construction method thereof

A pavement structure and combined technology, applied in the direction of roads, roads, and on-site coagulation pavements, can solve the problems of inability to reflect the performance advantages of structural layers, poor temperature stability of asphalt pavements, and insufficient coordination and cooperation. Saving road construction materials, good durability and small thickness

Active Publication Date: 2022-07-22
SHANDONG TRAFFIC PLANNING DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that there are two typical problems in the current long-life pavement structure. One is that the pavement structure has many layers and the thickness of the structure layer is large.
Second, the asphalt pavement itself has problems such as poor temperature stability, low fatigue limit, large construction energy consumption and emissions.
The third is that the coordination and cooperation between the various structural layers are not obvious enough, and the performance advantages of each structural layer cannot be perfectly reflected in the entire pavement structure

Method used

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  • A combined ultra-thin long-life pavement structure and construction method thereof
  • A combined ultra-thin long-life pavement structure and construction method thereof
  • A combined ultra-thin long-life pavement structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Engineering application of combined ultra-thin and long-life pavement structure

[0037] On October 27, 2020, the combined ultra-thin and long-life pavement structure was applied to the K3+381 level crossing, K3+460~K3+960 of Huanghai 4th Road (Lushan Road to Lanji Road), Linyi City, Shandong Province. The specific pavement structure It is cement stabilized gravel + macroporous polyurethane gravel + rubber powder polyurethane mixture layer + polyurethane mixture layer + anti-slip wear layer, and the length of the road section is 600m.

[0038] 1. Material composition of each structural layer

[0039] The cement-stabilized crushed stone is composed of aggregates of 0-5mm, 5-10mm, and 10-30mm in a ratio of 35:45:20. The synthetic gradation is shown in Table 1.

[0040] Table 1 Synthetic gradation of cement stabilized crushed stone

[0041]

[0042] The macroporous polyurethane crushed stone base is prepared by mixing 0~3mm, 3~5mm, 5~10mm, 10~20mm, 20~30mm a...

Embodiment 2

[0059] Example 2 Comparison of combined ultra-thin and long-life pavement structures

[0060] 1. Advantages of pavement structure composition

[0061] The typical combined long-life asphalt pavement and the 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 pavement is only 81.0% and 41.5% of that of Structures II and III. Reduced thickness of long-life pavement.

[0062] Table 6 Pavement structure and thickness

[0063]

[0064] 2. Cost advantage of pavement structure

[0065] Taking a highway 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 types of pavement structures proposed in Table 6 are calculated. The calculation results are shown in Table 7.

[0066] Table 7 Quantity and cost of three kinds of pavement structural material...

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Abstract

The invention discloses a combined ultra-thin long-life pavement structure and a construction method thereof. The structure includes an anti-slip and wear layer, a durable load-bearing layer, an anti-fatigue layer and a high-strength composite base, which can solve the current shortage of sand and gravel in the construction market. , Improve long-life pavement performance, reduce construction energy consumption and emissions.

Description

technical field [0001] The invention relates to a combined ultra-thin long-life pavement structure and a construction method thereof, belonging to the field of road engineering. Background technique [0002] Asphalt pavement is the most widely used pavement structure in my country at present. However, with the increasing traffic volume and the increasingly complex road environment, the road performance such as asphalt durability and high temperature stability has become stretched, rutting, potholes, fatigue Cracking and other diseases appear frequently, and the actual service life of the pavement is often less than 20 years. At present, the world's road engineering is transforming and developing towards the "fifth generation" of intelligent roads characterized by durability, greenness and intelligence, and various sensing devices are used more and more in the pavement structure. Periodic maintenance will not only cause a lot of waste of resources and environmental problems, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/32C04B26/16C04B26/26C04B28/02
CPCE01C7/32C04B26/26C04B26/16C04B28/02C04B2111/0075C04B14/14C04B14/28C04B20/0076C04B14/04C04B18/22
Inventor 毕玉峰孙敏王健庄伟陈赛陈昊
Owner SHANDONG TRAFFIC PLANNING DESIGN INST
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