Flexible freeze-thaw resistance treatment method for highway bridge expansion joints in seasonal frozen soil region

A technology for highways and treatment methods, which is applied to bridges, bridge parts, bridge maintenance, etc., can solve the problems of highway bridge expansion joint damage and poor maintenance effects, and achieve the goals of preventing water seepage and soil leakage, simple technology, and improved anchorage performance Effect

Active Publication Date: 2015-08-19
吉林省银河水利水电新技术设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a flexible anti-freezing and thawing treatment method for the expansion joints of expressway bridges in seasonally fro

Method used

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  • Flexible freeze-thaw resistance treatment method for highway bridge expansion joints in seasonal frozen soil region
  • Flexible freeze-thaw resistance treatment method for highway bridge expansion joints in seasonal frozen soil region

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] Example 1

[0069] It includes the following steps:

[0070] 1. Chisel out the damaged concrete in the original anchorage area, remove the original concrete materials, and pour high-performance anti-corrosive concrete 5.

[0071] The high-performance abrasion-resistant concrete includes the following raw materials in parts by weight:

[0072] General Portland Cement PO42.5 700 parts,

[0073] 2000 copies of medium coarse sand,

[0074] 2000 pieces of stones,

[0075] 300 parts of water,

[0076] The compound material includes the following raw materials in parts by weight:

[0077] 60 parts of polycarboxylic acid superplasticizer,

[0078] 0.03 parts of air-entraining agent,

[0079] Silicone resin polyether emulsion 0.02 parts

[0080] 2 parts of mortar partner,

[0081] (2) Flexible filling material between the side beam and Maule expansion joints

[0082] (1) Use wire brush to brush the liquid steel surface rust removal and phosphating agent between the Maole expansion joints of the si...

Example Embodiment

[0113] Example 2

[0114] It includes the following steps:

[0115] 1. Chisel out the damaged concrete in the original anchorage area, remove the original concrete materials, and pour high-performance anti-corrosive concrete 5.

[0116] The high-performance abrasion-resistant concrete includes the following raw materials in parts by weight:

[0117] General Portland Cement PO42.5 850 parts,

[0118] 150 parts of fly ash Ⅰ grade,

[0119] 5 parts of ternary copolymer fiber,

[0120] Silica fume, the content of SiO2 is greater than 90%, the specific surface area is 13,000 square meters / kg~20,000 square meters / kg 50 parts,

[0121] 2500 medium coarse sand,

[0122] 2650 pieces of stones,

[0123] 380 parts of water,

[0124] The compound material includes the following raw materials in parts by weight:

[0125] 105 parts of polycarboxylic acid superplasticizer,

[0126] 1.52 parts of air-entraining agent,

[0127] 2.01 parts of silicone resin polyether emulsion,

[0128] Low-viscosity thickening and...

Example Embodiment

[0164] Example 3

[0165] It includes the following steps:

[0166] 1. Chisel out the damaged concrete in the original anchorage area, remove the original concrete materials, and pour high-performance anti-corrosive concrete 5.

[0167] The high-performance abrasion-resistant concrete includes the following raw materials in parts by weight:

[0168] General Portland Cement PO42.5 1000 parts,

[0169] 300 copies of fly ash class I,

[0170] 10 parts of ternary copolymer fiber,

[0171] Silica fume, the content of SiO2 is greater than 90%, the specific surface area is 13,000 square meters / kg~20,000 square meters / kg 100 parts,

[0172] 3000 parts of medium coarse sand,

[0173] 3300 pieces of stones,

[0174] 460 parts of water,

[0175] The compound material includes the following raw materials in parts by weight:

[0176] 150 parts of polycarboxylic acid superplasticizer,

[0177] Air-entraining agent 3 parts,

[0178] 4 parts of silicone resin polyether emulsion,

[0179] Low-viscosity thickening...

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PUM

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Abstract

The invention relates to a flexible freeze-thaw resistance treatment method for highway bridge expansion joints in a seasonal frozen soil region and belongs to a maintenance and treatment method for the traffic road bridge broken maurer joints. The method includes: chiseling off the broken concrete of the original anchorage zone, clearing the original concrete materials, pouring the high-performance wear-corrosion resistance concrete, filling the flexible filling materials in the boundary beam maurer expansion joints, wherein the initial setting time of the filleting materials is 3-5 hours, and the consolidation time is 25-30 days, and ending the treatment. The flexible freeze-thaw resistance treatment method for the highway bridge expansion joints in the seasonal frozen soil region can improve the anchorage performance of the maurer joints, resists the freeze and thaw, prevents the water seepage and earth leakage, solves the problem that the expansion joints of the road bridge often occur, achieves the joint sealing purpose by direct embedding of the flexible wear-corrosion resistance filler in the joints, is simple in treatment method, and not only can prevent the water seepage and earth leakage of the expansion joint, but also is free of freeze and thaw in winter.

Description

technical field [0001] The invention belongs to a maintenance and treatment method for damaged maule joints of traffic road bridges. Background technique [0002] The expansion joints of expressway bridges in seasonally frozen soil areas are generally Maurer expansion joints 1’, such as figure 2 , including the anchorage area 5 and the bridge deck pavement layer 7. In the anchorage area, there are pre-embedded steel bars 11, structural bars 8 and anchoring steel bars 10. The steel plate 9 is fixedly connected to the anchoring steel bar, and the side beam 4 is fixedly connected to the steel plate. There is a V-shaped waterproof sealing strip 3' between the side beams. The two design principles of Maurer expansion joints are "rigid anchorage" and "sealing and waterproofing". The above question: [0003] 1. Rigid anchoring has the problem of poor anchoring effect, and sometimes the edge beam of the expansion joint is tilted, which not only affects the operation of the vehicle...

Claims

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Application Information

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IPC IPC(8): E01D19/06E01D22/00C04B28/04
Inventor 郑铎周继元杨金良
Owner 吉林省银河水利水电新技术设计有限公司
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