Novel compound deck repairing layer for concrete beam bridge

A concrete and repair layer technology, applied in bridge maintenance, bridges, bridge parts, etc., can solve problems such as aggravating bridge deck cracks, steel corrosion, affecting the safety of bridge structures, etc., and achieve the effect of increasing service life and increasing tensile strength.

Active Publication Date: 2014-09-24
CCCC ROAD & BRIDGE SPECIAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after some concrete bridges have longitudinal cracks, the internal steel bars corrode, which seriously affects the structural safety of the bridge. Moreover, due to the particularity of the structural design of this type of bridge, pasting steel slats and adding reinforced concrete layer

Method used

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  • Novel compound deck repairing layer for concrete beam bridge
  • Novel compound deck repairing layer for concrete beam bridge
  • Novel compound deck repairing layer for concrete beam bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, a kind of novel composite bridge deck repair layer that is used for concrete girder bridge, as figure 1 As shown, the bridge deck repair layer includes carbon fiber plate reinforcement layer, epoxy mortar layer and asphalt mastic macadam concrete pavement layer.

[0032] The carbon fiber board is drawn into a mold by mixing carbon fiber filaments with diphenol-based propane epoxy resin cured by methyltetrahydrophthalic anhydride and DMP-30. Among them, methyltetrahydrophthalic anhydride and DMP-30 are diphenol-based propane epoxy resin: methyltetrahydrophthalic anhydride: DMP-30=100:80:2 to treat diphenol according to the mass ratio propane epoxy resin.

[0033] Epoxy mortar is composed of diphenol-based propane epoxy resin, 1,4-butanediol diglycidyl ether, polypropylene glycol diglycidyl ether, amine curing agent, and quartz sand according to the mass ratio of diphenol-based propane epoxy resin : 1, 4-butanediol diglycidyl ether: polypropylene glycol di...

Embodiment 2

[0045] Embodiment 2, a kind of novel composite bridge deck repair layer that is used for concrete girder bridge, as figure 1 As shown, the bridge deck repair layer includes carbon fiber plate reinforcement layer, epoxy mortar layer and asphalt mastic macadam concrete pavement layer.

[0046] The carbon fiber board is drawn into a mold by mixing carbon fiber filaments with diphenol-based propane epoxy resin cured by methyl hexahydrophthalic anhydride and DMP-30. Among them, methylhexahydrophthalic anhydride and DMP-30 are diphenol-based propane epoxy resin: methylhexahydrophthalic anhydride: DMP-30=100:100:4 according to the mass ratio of diphenol propane epoxy resin.

[0047] Epoxy mortar is composed of diphenol-based propane epoxy resin, 1,4-butanediol diglycidyl ether, polypropylene glycol diglycidyl ether, amine curing agent, and quartz sand according to the mass ratio of diphenol-based propane epoxy resin : 1, 4-butanediol diglycidyl ether: polypropylene glycol diglycidy...

Embodiment 3

[0059] Embodiment 3, a kind of novel composite deck repair layer for concrete girder bridge, as figure 1 As shown, the bridge deck repair layer includes carbon fiber plate reinforcement layer, epoxy mortar layer and asphalt mastic macadam concrete pavement layer.

[0060] The carbon fiber board is drawn into a mold by mixing carbon fiber filaments with diphenol-based propane epoxy resin cured by methyl hexahydrophthalic anhydride and DMP-30. Among them, methylhexahydrophthalic anhydride and DMP-30 are diphenol-based propane epoxy resin: methylhexahydrophthalic anhydride: DMP-30=100:90:6 to treat diphenol according to the mass ratio propane epoxy resin.

[0061] Epoxy mortar is composed of diphenol-based propane epoxy resin, 1,4-butanediol diglycidyl ether, polypropylene glycol diglycidyl ether, amine curing agent, and quartz sand according to the mass ratio of diphenol-based propane epoxy resin : 1, 4-butanediol diglycidyl ether: polypropylene glycol diglycidyl ether: amine ...

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Abstract

The invention relates to bridge deck repairing, in particular to a novel compound deck repairing layer for a concrete beam bridge. The deck repairing layer comprises a carbon fiber plate reinforcement layer, an epoxy mortar layer and a stone mastic asphalt formation layer, wherein the carbon fiber plate reinforcement layer is formed by pressing high-strength carbon fiber and epoxy resin at high temperature; the epoxy mortar layer is formed by mixing epoxy resin and fine sand; the stone mastic asphalt formation layer is a stone mastic asphalt concrete layer. The novel compound deck repairing layer, provided by the invention, is clear in structural function; the repairing layer can effectively prevent further expansion of a crack; the formation layer has excellent water preventing and thermal insulation functions to avoid wearing and corrosion to the steel reinforcement inside the concrete bridge; the adopted carbon fiber and other materials can improve tensile strength of the repairing layer, and the service life of the deck is prolonged.

Description

technical field [0001] The invention relates to bridge deck repair, in particular to a novel composite bridge deck repair layer for concrete girder bridges. Background technique [0002] After several years of operation, concrete bridges will crack due to traffic load, temperature change, humidity and heat cycle and many external factors, which bring potential hazards to bridges, especially prestressed concrete bridges. Most of these cracks appear on the bottom surface of the box girder roof and the bottom surface of the bridge bottom plate. In the later stage of remediation, methods such as pasting steel plates, carbon fiber plates or applying prestress are usually used for reinforcement and maintenance. [0003] However, after some concrete bridges have longitudinal cracks, the internal steel bars corrode, which seriously affects the structural safety of the bridge. Moreover, due to the particularity of the structural design of such bridges, pasting steel slats and adding ...

Claims

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Application Information

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IPC IPC(8): E01D19/12E01D22/00C04B26/14C04B14/06
Inventor 王蔚王伟李少芳盛海军吴俊明朱慈祥苏云超
Owner CCCC ROAD & BRIDGE SPECIAL ENG
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