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Repair process for rapidly-formed concrete and expansion joints

A technology for concrete and expansion joints, applied in bridge maintenance, bridges, bridge parts, etc., can solve the problems of slow concrete solidification, insufficient durability, short service life, etc., to shorten the maintenance time, simple process, and reduce safety risks. Effect

Active Publication Date: 2016-08-03
贵州笠霸修缮科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the expansion joint is damaged, it will definitely cause a greater impact on the vehicle, which will further deteriorate the driving condition
[0004] Replacing expansion joints is a very troublesome, laborious and time-consuming task. The concrete on both sides must be cut open until the original anchorage structure is taken out, a new expansion joint and its anchorage are installed, concrete is poured, and maintenance is performed before it can be opened to traffic.
In addition, in the process of replacing expansion joints, concrete obtained from ordinary Portland cement is often used for pouring, but the concrete solidifies slowly, resulting in long curing time, which affects the opening to traffic; and the single composition and poor compactness lead to poor rigidity, flexibility and durability of the concrete. Insufficient performance, short service life

Method used

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  • Repair process for rapidly-formed concrete and expansion joints
  • Repair process for rapidly-formed concrete and expansion joints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment is used to replace the entire expansion joint, that is, the part of the expansion joint to be repaired is the entire expansion joint.

[0059] First, clean up the concrete fragments of the entire expansion joint to expose the entire expansion joint steel bar.

[0060] Next, rinse the joints of the expansion joint steel bars with water, and apply RMO evenly on the joints until no obvious moisture is seen.

[0061] Then prepare rapid prototyping concrete, which is mixed with 80kg of Portland cement, 200kg of gravel, 100kg of fine sand, 0.5kg of iron wire fiber, 1kg of permanent concrete liquid, 2kg of flexible repair agent, 15kg of water, and 0.3kg of industrial ethanol Obtained by stirring; pour the mixed concrete on one side of the expansion joint steel bar, vibrate the slurry with a vibrating rod, and spread it flat with a flat plate.

[0062] After 10 minutes, spray industrial ethanol on the concrete surface, and 30 minutes later, spray concrete perma...

Embodiment 2

[0065] The present embodiment and embodiment 1 similarity no longer go into details, and the difference is that the concrete used for restoration consists of 120kg portland cement, 280kg crushed stone, 140kg fine sand, 1.5kg iron wire fiber, 3kg concrete permanent condensate, 4kg It is obtained by mixing and stirring flexible repair agent, 25kg water, and 0.7kg industrial ethanol.

[0066] The quality inspection results of the expansion joint concrete in Example 2: after 2 months and 1 year, respectively, the strength of the expansion joint concrete was tested, and the strength was 24MPa and 28MPa respectively.

Embodiment 3

[0068] The similarities between this embodiment and Embodiment 1 will not be repeated, and the difference is that the repairing concrete is composed of 100kg ordinary portland cement PO42.5, 240kg of crushed stones with a diameter of 1-2cm, 120kg of fine sand, and 1kg of length. It is obtained by mixing and stirring iron wire fibers of 1-3 cm, 2 kg of permanent concrete liquid, 3 kg of flexible repair agent, 20 kg of water, and 0.5 kg of industrial ethanol.

[0069] The quality inspection results of the expansion joint concrete in Example 3: after 2 months and 1 year, respectively, the strength of the expansion joint concrete was tested, and the strength was 25MPa and 28MPa respectively.

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Abstract

The invention provides a repair process for rapidly-formed concrete and expansion joints and relates to the field of concrete buildings.The concrete is prepared by mixing 80-120 parts of Portland cement, 200-280 parts of gravel, 100-140 parts of fine sand, 0.5-1.5 parts of iron wire fibers, 1-3 parts of concrete deep penetration sealer, 2-4 parts of repair mortsr & overlay concentrate, 15-25 parts of water and 0.3-0.7 part of industrial alcohol.Consolidation forming of the concrete is rapid, and maintenance time is short; the concrete is god in rigid-soft elasticity and long in service life.According to the repair process, broken concrete is cleared up firstly, then the repair mortsr & overlay concentrate is used for treating joint positions, then the concrete for repair is poured, and finally the concrete deep penetration sealer is used for reinforcing a concrete pavement.The repair process is simple in procedure, time and labor are saved, rapid molding and fastness of the concrete are achieved, and timely open traffic can be achieved.Safety risks caused by road involving construction are reduced, the maintenance time is greatly shortened, and the maintenance cost is better reduced.

Description

technical field [0001] The invention relates to the field of concrete construction, in particular to a repairing process for rapidly prototyping concrete and expansion joints. Background technique [0002] Concrete building facilities, such as highways, tunnels, various piers, dams, reservoirs, power stations, nuclear power plants, cooling towers, subways, overpasses, bridges, airport roads, pile foundations, sewage treatment pools, reservoirs, All concrete structures such as basements, roofs, toilets, kitchens, and waterproof construction of toilets in industrial and civil buildings will produce gaps after long-term use, which will affect the quality of concrete building facilities. However, after repairing the gaps of concrete building facilities, the current concrete is slow to solidify and form, and takes a long time to maintain; it has poor rigidity, flexibility, poor durability, and short service life. [0003] In the above-mentioned concrete construction facilities, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E01D19/06E01D22/00C04B111/72
CPCC04B28/04C04B2111/72E01D19/06E01D22/00C04B14/02C04B14/06C04B14/48C04B2103/0068C04B24/02
Inventor 杨跃徐正良杨泽江张志会
Owner 贵州笠霸修缮科技有限公司