Prestressed reinforced concrete pile foundation anticorrosive material for oceaneering and its construction method

A reinforced concrete and marine engineering technology, which is applied in infrastructure engineering, sheet pile walls, protection devices, etc., can solve the problems of high maintenance cost, complicated coating maintenance, and the coating cannot be dried and cured, and achieves high mechanical strength and construction. Simple, less stress-cracking effect

Active Publication Date: 2015-09-02
CCCC SHANGHAI THIRD HARBOR SCI RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The maintenance of the coating is more complicated, and the maintenance cost is extremely high. The maintenance steps of the coating include the eradication of the original coating, the surface treatment of the pile foundation, and the application of a new coating, etc.
During maintenance, the coating cannot be in contact with seawater before it dries and solidifies, otherwise the coating cannot dry and solidify. Since most coatings require multiple layers of construction, on-site maintenance is almost an impossible task

Method used

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  • Prestressed reinforced concrete pile foundation anticorrosive material for oceaneering and its construction method
  • Prestressed reinforced concrete pile foundation anticorrosive material for oceaneering and its construction method
  • Prestressed reinforced concrete pile foundation anticorrosive material for oceaneering and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 3

[0053] 1. Experimental method

[0054] Clean up the oil and other dirt, cement laitance and other loose matter in the area to be covered on the surface of the prestressed reinforced concrete pipe pile. Then, use resin cement to fill and smooth the surface defects of the pile to make the surface of the pile smooth. Among them, the components and parts by weight of the resin cement are: 100 parts of epoxy vinyl ester resin, 1.5 parts of methyl ethyl ketone peroxide, 0.5 parts of cobalt isooctanoate, and 100 parts of cement.

[0055] After the resin cement is solidified for 12-24 hours, preferably 24 hours, start to coat the glass fiber reinforced plastic. At the same time, take the pigment, thixotropic agent, ultraviolet absorber, and accelerator according to the proportion and add them to the resin in order to stir evenly, then add the initiator while stirring, wait for 3-5min, preferably 5min after stirring evenly, to obtain the resin glue. During the whole glue preparation ...

Embodiment 4～ Embodiment 6

[0119] The same experimental method as in the above-mentioned Examples 1 to 3 was adopted, wherein the composition and weight percentage of the raw material components of the anti-corrosion material forming the FRP anti-corrosion layer are shown in Table 4.

[0120] Formulation table of prestressed reinforced concrete pile foundation anticorrosion materials in marine engineering in Table 4 embodiment 4-6

[0121]

[0122] The marine engineering prestressed reinforced concrete pile foundation anticorrosion material prepared by the composition formula in Table 4 has performance results similar to those in Table 3 in Examples 1 to 3, and also has high mechanical strength, high interfacial bond strength, and anticorrosion performance Good advantages, anti-corrosion materials have an anti-chloride ion penetration life of more than 50 years, have high durability, and can meet the performance requirements of marine engineering structures for anti-corrosion materials.

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Abstract

The invention provides a prestressed reinforced concrete pile foundation anticorrosive material for oceaneering, comprising, by weight, 40% to 60% of resin, 0.3% to 1% of pigment, 1% to 3% of thixotropic agent, 0.3% to 0.7% of ultraviolet absorption agent, 1% to 2.5% of initiator, 0.1% to 1.5% of accelerant and 35% to 55% of glass fiber cloth. The invention further provides a construction method of the prestressed reinforced concrete pile foundation anticorrosive material for oceaneering. The anticorrosive material has the advantages that the construction is convenient, the required thickness of oceaneering pile foundation anticorrosive coating can be achieved only by one-time construction, the construction period is short, and environmental friendliness is allowed; the strength of bonding with the surface of a pile foundation is high, peeling rarely occurs, the corrosion resistance is excellent, the durability is high, and the requirement that chloride penetration resistance of the pile foundation in marine environment lasts for 50 years can be ensured.

Description

technical field [0001] The invention belongs to the technical field of marine engineering pile foundation anticorrosion, and relates to a marine engineering pile foundation anticorrosion material and a construction method thereof, in particular to a high-durability marine engineering prestressed reinforced concrete pile foundation anticorrosion material and a construction method thereof. Background technique [0002] At present, the prestressed reinforced concrete pile foundations commonly used in marine engineering mainly include large pipe piles and PHC pipe piles. Due to the decrease in the durability of the pile foundation and the shortening of the service life of the pile foundation caused by the erosion of chloride ions in seawater, it has attracted much attention in the marine engineering field. As we all know, chloride ions in seawater are highly corrosive substances. When the prestressed reinforced concrete large pipe piles and PHC pipe piles are directly exposed to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30E02D31/06C08L63/10C08K7/14
Inventor 王成启聂亚楠谷坤鹏汪冬冬潘根强
Owner CCCC SHANGHAI THIRD HARBOR SCI RES INST CO LTD
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