A method for upgrading and reforming old cement concrete pavement

A technology of concrete pavement and old cement, which is applied to cohesive pavement paved on site, roads, roads, etc., to achieve excellent anti-rutting performance and fatigue resistance, long service life and good skid resistance

Active Publication Date: 2016-08-24
XIDI (SUZHOU) SURVEY & DESIGN CONSULTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of upgrading method for the old cement concrete pavement aiming at the problems existing in the reconstruction of the existing urban cement concrete pavement. The strength and bearing capacity of concrete, the entire pavement structure has excellent anti-rutting and fatigue resistance, and the pavement does not need to be equipped with joints, the pavement has good anti-skid performance, and the driving safety is greatly improved.

Method used

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  • A method for upgrading and reforming old cement concrete pavement

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Effect test

Embodiment 1

[0025] Treatment of old cement pavement diseases, including remediation of broken slabs on the original cement concrete pavement, treatment of voids at the bottom of slabs, repair of cracks, treatment of staggered platforms, etc., and then chisel surface treatment on the road surface, requiring the distance between chisel points on the surface to be controlled at 1.5 ~4cm, the depth of the chiseling point is controlled at 2~8mm.

[0026] Pavement of crack suppression functional layer: evenly spread a layer of rubber modified emulsified asphalt mixture, and roll on the old cement concrete pavement to form a crack suppression functional layer; in rubber modified emulsified asphalt mixture, the particle size is 5~10mm crushed stone, 3~5mm particle size crushed stone, particle size less than 3mm crushed stone, rubber modified emulsified asphalt, fiber, cement and water weight ratio is 10:40:50:12:0.001:0.5 : 5. The thickness of the pavement is 1cm. The gravel is produced in Liuhe ...

Embodiment 2

[0030] Treatment of old cement pavement diseases, including remediation of broken slabs on the original cement concrete pavement, treatment of voids at the bottom of slabs, repair of cracks, treatment of staggered platforms, etc., and then chisel surface treatment on the road surface, requiring the distance between chisel points on the surface to be controlled at 1.5 ~4cm, the depth of the chiseling point is controlled at 2~8mm.

[0031] Pavement of crack suppression functional layer: evenly spread a layer of rubber modified emulsified asphalt mixture, and roll on the old cement concrete pavement to form a crack suppression functional layer; in rubber modified emulsified asphalt mixture, the particle size is 5~10mm crushed stone, 3~5mm particle size crushed stone, particle size less than 3mm crushed stone, rubber modified emulsified asphalt, fiber, cement and water weight ratio is 20:30:50:16:0.003:1.5 : 10, the paving thickness is 1.5cm, the crushed stones are produced in Liu...

Embodiment 3

[0035] Treatment of old cement pavement diseases, including remediation of broken slabs on the original cement concrete pavement, treatment of voids at the bottom of slabs, repair of cracks, treatment of staggered platforms, etc., and then chisel surface treatment on the road surface, requiring the distance between chisel points on the surface to be controlled at 1.5 ~4cm, the depth of the chiseling point is controlled at 2~8mm.

[0036] Pavement of crack suppression functional layer: evenly spread a layer of rubber modified emulsified asphalt mixture, and roll on the old cement concrete pavement to form a crack suppression functional layer; in rubber modified emulsified asphalt mixture, the particle size is 5~10mm crushed stone, 3~5mm particle size crushed stone, particle size less than 3mm crushed stone, rubber modified emulsified asphalt, fiber, cement and water weight ratio is 15:35:50:8:0.002:1 : 8, the paving thickness is 1.2cm, and the crushed stones are all produced in...

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Abstract

The invention provides an improved construction method of an old cement concrete pavement. The improved construction method comprises the following steps: disposing an old cement pavement disease and performing chiseling on the pavement surface; uniformly paving and spreading a layer of rubber modified emulsified asphalt mixture, and grinding on the old cement concrete pavement to form a crack inhibition function layer; paving a large-void asphalt mixture on the crack inhibition function layer; pouring cement mortar into the large-void asphalt mixture after the temperature of the large-void asphalt mixture is reduced to be under 50 DEG C, scraping the surface laitance with a brush to expose an aggregate structure after the large-void asphalt mixture is fully poured, and maintaining to open the traffic. The pavement constructed by the method can fully inherit the bearing capacity of the original cement concrete and has excellent anti-rutting performance and anti-fatigue performance, no lapped seam is formed on the pavement, the anti-sliding performance of the pavement is enhanced, the running safety is improved greatly and the improved construction method has wide application prospect.

Description

technical field [0001] The invention relates to a method for upgrading and transforming old cement concrete pavements, which belongs to the field of road engineering applications. Background technique [0002] At present, urban roads are mainly divided into cement concrete pavement and asphalt pavement. Among them, with the increase of the service life of the cement concrete pavement, the traffic volume increases sharply, and it is prone to plate cracking, mud pumping and other diseases, and the flatness is poor, which seriously affects the driving comfort. With the continuous development of the city, more and more cement concrete pavement will face overhaul. At present, the measures for the reconstruction of urban road cement concrete pavement mainly include: adding an asphalt concrete layer after milling, that is, the so-called "white to black"; directly adding an asphalt mixture layer on the old cement concrete slab, that is, the so-called "white and black" . Among the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/18
CPCC04B26/26C04B28/04C04B28/06C04B2111/0075E01C7/32C04B24/36C04B14/06C04B16/0683C04B16/0633C04B14/28C04B14/068C04B24/24C04B2103/302
Inventor 朱荣军赵国强王健沈学芳王文达李国峰郑栋钮凯健戈若愚
Owner XIDI (SUZHOU) SURVEY & DESIGN CONSULTING CO LTD
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