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Scrap cement stabilize broken stone recycled pavement base course

A cement-stabilized crushed stone and pavement base technology, which is applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., to achieve the effects of wide application range, convenient construction and compaction, and prolonging the time of paving and rolling

Active Publication Date: 2012-03-28
JINAN YELLOW RIVER CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cement-stabilized crushed stone recycling technology is rarely studied

Method used

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  • Scrap cement stabilize broken stone recycled pavement base course
  • Scrap cement stabilize broken stone recycled pavement base course
  • Scrap cement stabilize broken stone recycled pavement base course

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Road demolition

[0027] In the municipal road reconstruction project, the asphalt pavement can be demolished with a milling machine or other methods; the cement concrete pavement is generally demolished with an oil hammer. The dismantled pavement materials shall be mechanically transported to the designated place for disposal, and shall not be dumped at random to avoid environmental pollution.

[0028] 2. Recycled and transported to the crushing station

[0029] After the pavement is broken, the water stabilized layer and the fly ash layer are broken with an oil hammer, and the water stabilized or fly ash layer is piled up with an excavator. Select the time period for the release of transport vehicles to transport the old fly ash and water-stabilized materials to the crushing station for centralized crushing.

[0030] 3. Crushing by Jaw Crusher

[0031] After the old cement-stabilized crushed stone is sent to the crushing station, it is crushed by a conventional ...

Embodiment 2

[0053] The cement stabilized base of Erhuan West Road in Jinan City has been recycled, and the recovery and production process are the same as in Example 1. The weight ratio of crushed stones in each particle size range after classification is shown in Table 3.

[0054] Table 3 The distribution of particle size ranges after crushing and grading the water-stabilized base course in the west of the Second Ring Road

[0055] Particle size range 26mm-31.5mm 10mm-26mm 5mm-10mm Below 5mm quality score 17% 23% 29% 31%

[0056] According to the specifications, the mix design is as follows, 26-31.5mm gravel: 10-26mm gravel: 5-10mm gravel: stone chips: cement: core-shell latex: nano-core-shell rubber particle weight ratio 22:23:25:30 :6.0:0.5:1.5. The core-shell latex is an acrylic core-shell latex with a glass transition temperature of 20°C, a solid content of 48.1%, a pH of 9.5, and a degree of polymerization of 2000;

[0057] The particle size of the...

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Abstract

The invention belongs to the technical field of pavement base course material recycling, and provides scrap cement stabilized broken stone recycled pavement base course. The base course consists of the following raw materials in weight proportion: broken stones of between 26 and 31.5mm to broken stones of between 10 and 26mm to broken stones of between 5 and 10mm to stone chips lower than 5mm to cement to core shell latex to nano-core shell rubber particles is (20-22): (22-23): 25: (30-33): (5.0-6.0):0.5: 1.5. The cement stabilized broken stone has wide sources, simple recycling method, high utilization rate, resource saving, environment protection, low carbon and environmental friendliness; the cost is saved by 50 to 70 percent; latex and rubber particles are added, so that the time for paving and rolling the cement stabilized broken stones can be prolonged, the strength of the cement stabilized broken stones is increased, and the water damage resistance of the cement stabilized broken stones is enhanced, occurrence of frost boiling is reduced, and constructing compaction is facilitated.

Description

technical field [0001] The invention belongs to the technical field of regeneration and utilization of pavement base materials, and in particular relates to a pavement base regenerated from waste cement stabilized gravel. Background technique [0002] In recent years, my country's road development and construction have advanced by leaps and bounds. By the end of 2010, the total mileage of national highways had reached 3.984 million kilometers, and the mileage of expressways had reached 74,000 kilometers. A comprehensive transportation system that is convenient, safe, economical and efficient has initially formed. At the same time, with the increase of traffic load, some road surfaces have been damaged to varying degrees, such as deformation, rutting, wear, cracks and so on. It is imminent to repair, renovate and rebuild some aging and seriously deteriorating roads. [0003] During the 12th Five-Year Plan period, the country attaches great importance to the research and de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/16
CPCY02W30/91
Inventor 庞吉莲蒋川董文洁马士玉郭作波
Owner JINAN YELLOW RIVER CONSTR GRP CO LTD