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Rapid repair material for bridge expansion joints and preparation method thereof

A technology for repairing materials and expansion joints, applied in the field of construction engineering, can solve problems such as difficult to meet the fast and efficient repair performance of expansion joints, and achieve the effects of good buffering, integration, stability and comfort.

Active Publication Date: 2022-03-22
HEBEI CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the hardening time of the existing quick repair materials on the market is mostly within 3 hours. At the same time, there are certain deficiencies in durability, adhesion and cost, and it is difficult to meet the needs of rapid and efficient repair performance of expansion joints.

Method used

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  • Rapid repair material for bridge expansion joints and preparation method thereof
  • Rapid repair material for bridge expansion joints and preparation method thereof
  • Rapid repair material for bridge expansion joints and preparation method thereof

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Embodiment 1～4

[0029] Bridge expansion joint rapid repair material, composed of magnesium oxide, ammonium dihydrogen phosphate, red mud, rubber particles, quartz sand, emulsified asphalt, coupling agent, fiber, polymer powder, coagulant and water in a certain proportion, with the following process The method is completed: first add the crushed rubber tire particles according to the proportion design requirements into the mixer and stir, add the weighed emulsified asphalt and coupling agent, and stir for 1min; then add the weighed magnesium oxide, ammonium dihydrogen phosphate, red mud , quartz sand, polymer powder and coagulation agent were added and stirred for 1min; water was added in portions, stirred into a fluid mixture, and fibers were added to continue stirring, and the stirring time was controlled within 5 minutes; the formed fluid concrete mixture It is poured into the expansion joint, vibrated and formed within 5 minutes, polished and plastered, and can be opened to traffic after 30...

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Abstract

The invention relates to a rapid repair material for bridge expansion joints and a preparation method thereof. The reaction heat of ammonium hydrogen and magnesium oxide activates the industrial waste red mud to participate in the reaction, and quickly generates strength as a cementitious material, introducing rubber particles, compound emulsified asphalt and coupling agent to improve the deformation ability and bonding strength of the repair material. Compared with the prior art, the rapid repair material for bridge expansion joints prepared by the present invention has the advantages of making full use of waste tires and industrial waste red mud, reducing environmental pollution and low cost, and the repaired expansion joints can be quickly opened to traffic, and has High elasticity and great flexibility, excellent wear resistance, no shrinkage, good durability and so on.

Description

technical field [0001] The invention relates to a material in the technical field of construction engineering and a preparation method thereof, in particular to a material for rapid repair of bridge expansion joints and a preparation method thereof. Background technique [0002] As a vulnerable part in bridge structural engineering, bridge expansion joints have always been concerned by the industry. Because bridge expansion joints directly bear the impact of wheel loads and are exposed to the atmospheric environment for a long time, they are usually the first to be damaged, and their maintenance costs are also very expensive. The typical early failure of expansion joints is mostly concrete cracking and spalling. After the cracks are generated, the failure will be accelerated under the repeated impact of the vehicle load. The joint between the concrete and the asphalt pavement of the expansion joint is prone to height difference, and the vehicle will jump here. The impact ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B111/72
CPCC04B28/344C04B2111/72C04B2201/50C04B22/066C04B18/0409C04B18/22C04B14/06C04B24/36C04B24/42C04B16/0633C04B22/16
Inventor 梁志通董海洋靳玉川王立坤杨思彬窦文彪贾东伟王旭
Owner HEBEI CONSTR GRP CO LTD
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