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Method for repairing damaged part of expansion joint for concrete road

A concrete road and damage technology, applied in the direction of road repair, roads, roads, etc., can solve the problems of high maintenance cost, damage or peeling, short service life, etc., to shorten the repair construction time, prevent damage, and improve service life. Effect

Inactive Publication Date: 2016-03-02
ROADCHEM +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] Moreover, in order to repair the palm-sized part, it is necessary to cut the road surface with a width of about 50 cm. This construction method not only causes damage to the normal road surface, but also prohibits or restricts the passage of vehicles for a long time after construction, resulting in serious traffic jams. The bonding force of the bonding part with the paving material is reduced, and the bonding part between the repaired part and the existing concrete will be easily damaged or peeled off, the service life is short, and the maintenance cost is expensive

Method used

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  • Method for repairing damaged part of expansion joint for concrete road
  • Method for repairing damaged part of expansion joint for concrete road
  • Method for repairing damaged part of expansion joint for concrete road

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Embodiment

[0071] When making fast-hardening polyurethane mortar (20a), it is necessary to prepare a mixture of fast-hardening, high-strength, high-elastic polyurethane (accounting for 33% by volume), silica sand with a particle size of 20-100 mesh (accounting for 67% by volume), and fast-hardening polyurethane mortar (20a). Hard, high-strength, high-elastic polyurethane (20% by volume), polyurethane mortar mixed with silica sand with a particle size of 20-100 mesh (80% by volume), and fast-hardening, high-strength, high-elastic polyurethane . The fast-hardening, high-strength, high-elastic polyurethane (hereinafter referred to as the repair material joint) is formed into a plate shape and then hardened. Prepare a mixture of fast-hardening epoxy (33% by volume) and silica sand (67% by volume) with a particle size of 20 to 100 meshes, and mix them in proportion to form blocks of 50, 50, and 50 mm in length, width, and height. (hereinafter referred to as repairing material block) after ha...

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Abstract

The present invention relates to a method for repairing a damaged part of an expansion joint for a concrete road and, more particularly to, a method for repairing a damaged part of an expansion joint for a concrete road, comprising: an epoxy mortar plastering step for filling a damaged part by plastering, with epoxy mortar, a damaged concrete part of an joint formed so as to be expanded in a concrete road; an urethane mortar filling step for filling the joint with urethane mortar; and an urethane injection step for injecting the rapid-hardening urethane into a joint of an upper part of the urethane mortar. According to this method, it is possible to reduce required construction time by excluding processes for cutting, crushing, and high-pressure-cleaning existing concrete and the like and by quickening a curing speed of a repairing material, provide excellent binding force with an existing road pavement material, obtain waterproof properties for preventing water permeation, and further improve durability even though a dynamic load of a vehicle is repetitively generated since the repaired road surfaces are connected to each other.

Description

technical field [0001] The invention relates to a method for repairing damaged parts of expansion joints for concrete roads. The invention can repair the damaged parts of concrete at the expansion joints of concrete roads. Background technique [0002] In general, automobile roads can be roughly classified into asphalt roads and concrete roads, and the present invention relates to concrete roads. Concrete roads paved with reinforced concrete will experience heat expansion and contraction when exposed to sunlight, and the temperature changes from summer to winter and the process of freezing and melting is repeated. Therefore, in general, roads need to be covered every 10 ~20m or so to set up an expansion joint. [0003] The pavement of the concrete road is paved by first laying steel bars, then laying high-strength concrete, and finally rolling the surface with a road roller. At this time, the upper surface is made of unreinforced concrete, so an expansion joint (EXPANSION ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/09E01C11/02
CPCE01C11/103
Inventor 崔东昡
Owner ROADCHEM
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