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Recycled composite concrete pavement and preparation method thereof

A technology for concrete pavement and rejuvenating agent, applied in the direction of roads, roads, road repair, etc., can solve the problems of disappearance, long traffic closure time, and weakened performance of composite concrete flexibility, to improve high temperature rutting resistance and durability, overcome the The effect of easy temperature shrinkage cracking and improving road performance

Inactive Publication Date: 2019-05-31
LIAONING NEW DEV HIGHWAY TECH MAINTENANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the curing time of the cement mortar material is 24 hours, the traffic closure time is too long, and the time cost is too large
[0006] Chinese patent CN105481322B discloses a semi-flexible composite pavement structure. The base asphalt mixture design porosity of the semi-flexible composite pavement is between 22% and 28%, and its 28d dynamic stability test results are above 30,000 times / mm. The rigid performance of concrete will inevitably lead to the weakening or disappearance of the flexible performance of composite concrete, which violates the original design intention of the semi-flexible composite pavement of "combining rigidity and flexibility".

Method used

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  • Recycled composite concrete pavement and preparation method thereof
  • Recycled composite concrete pavement and preparation method thereof
  • Recycled composite concrete pavement and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw materials for recycled composite concrete pavement include: recycled asphalt pavement materials and cement-based mortar.

[0031] Recycled asphalt pavement materials are calculated in parts by weight of each component, including:

[0032] Recycled asphalt pavement material 90

[0033] New aggregate 9

[0034] Regenerant 0.4

[0035] Tackifier 0.6

[0036] The recycled asphalt pavement material is the pavement milling material of Shenshan Expressway, and the original pavement asphalt is SBS modified asphalt.

[0037] Recycled asphalt pavement materials are divided into three grades according to particle size, with particle sizes ranging from 0mm to 5mm, 5mm to 10mm and 10mm to 20mm.

[0038] The new aggregate has two specifications of 5mm-10mm and 10mm-20mm.

[0039] The regeneration agent is an aromatic solvent oil, selected from the product of Gerkelin Trading (Shanghai) Co., Ltd., and the brand name is GRAR01.

[0040] The tackifier is terpene resin, the pro...

Embodiment 2

[0054] Recycled asphalt pavement materials are calculated in parts by weight of each component, including:

[0055] Recycling Asphalt Pavement Material 94

[0056] New aggregate 5

[0057] Regenerant 0.5

[0058] Tackifier 0.5

[0059] The recycled asphalt pavement material is the pavement milling material of Shenshan Expressway, and the original pavement asphalt is SBS modified asphalt.

[0060] Recycled asphalt pavement materials are divided into three grades according to particle size, with particle sizes of 5mm-10mm and 10mm-20mm.

[0061] The new aggregate has two specifications of 0mm-5mm and 5mm-10mm.

[0062] The regeneration agent is an aromatic solvent oil, selected from the product of Gerkelin Trading (Shanghai) Co., Ltd., and the brand name is GRAR01.

[0063] The tackifier is terpene resin, the product of Shanghai Zhengshang Chemical Technology Co., Ltd., the brand is 803L. The compacted porosity of recycled asphalt pavement materials was tested according to...

Embodiment 3

[0075] Recycled asphalt pavement materials are calculated in parts by weight of each component, including:

[0076] Recycled asphalt pavement material 100

[0077] Regenerant 0.6

[0078] Tackifier 0.4

[0079] The recycled asphalt pavement material is the pavement milling material of Shenshan Expressway, and the original pavement asphalt is SBS modified asphalt.

[0080] Recycled asphalt pavement materials are divided into three grades according to particle size, with particle sizes of 5mm-10mm and 10mm-20mm.

[0081] The regeneration agent is an aromatic solvent oil, selected from the product of Gerkelin Trading (Shanghai) Co., Ltd., and the brand name is GRAR01.

[0082] The tackifier is rosin resin, selected from Shangrao Henglin Resin Co., Ltd., the brand is 138, and the softening point is 80°C to 100°C.

[0083] The compacted porosity of recycled asphalt pavement materials was tested according to the provisions of T0708-2011 in the "Test Regulations for Asphalt and A...

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Abstract

The invention belongs to the technical field of road engineering pavement construction, and particularly relates to a recycled composite concrete pavement and a preparation method thereof. According to the technical scheme, the recycled composite concrete pavement is prepared from a recycled recovery asphalt pavement material and cement-based liquid mortar; the recycled recovery asphalt pavement material is prepared from, by weight, 90-98 parts of a recycled asphalt pavement material, 0-8 parts of new aggregates, 0.2-1.2 parts of a regenerant and 0.1-1.0 part of a tackifier; the cement-based liquid mortar is prepared from, by weight, 25-40 parts of quick-hardening sulphoaluminate cement, 5-15 parts of mineral admixture, 20-35 parts of ultra-fine quartz sand, 1.0-2.2 parts of a high-performance water reducing agent, 0.06-0.12 part of a defoaming agent and 20-32 parts of water. The pavement has excellent high temperature rutting resistance and low temperature cracking resistance, and hasremarkable effects on construction cost reducing, energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of road engineering pavement construction, and in particular relates to a recycled composite concrete pavement and a preparation method thereof. Background technique [0002] Asphalt pavement is under the influence of environmental climate and vehicle load for a long time, and the quality of its constituent materials will inevitably change and attenuate. Therefore, expressways need regular maintenance and maintenance. The annual milling waste generated by old pavement maintenance in my country is about 200 million tons. The traditional asphalt pavement regeneration technology has many problems such as low utilization rate of old materials, high energy consumption and poor performance of the regenerated pavement, which seriously restricts the promotion of pavement material recycling technology. [0003] Grouting technology is widely used in various engineering fields. The semi-flexible composite pavement is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06E01C7/26E01C19/10E01C19/26
Inventor 宋家楠温宇宁
Owner LIAONING NEW DEV HIGHWAY TECH MAINTENANCE CO LTD
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