Method for wrapping protection of concrete members in tidal zone

A technology for concrete and tidal range areas, which is applied in the direction of building components, adhesive types, polyether adhesives, etc., and can solve problems such as weather resistance and insufficient durability

Active Publication Date: 2019-05-24
上海岐海防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses polyisobutylene-based sealing tape prepared with aluminum foil, PVC tape, and polyethylene sheet as the backing material for pasting construction. The method is convenient and environmentally friendly. Stability still exists, but the weather resistance and durability of tape materials with aluminum foil, PVC tape, and polyethylene sheet as the backing material are obviously insufficient

Method used

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  • Method for wrapping protection of concrete members in tidal zone
  • Method for wrapping protection of concrete members in tidal zone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0055] Processing and preparation of silane-modified polymer sealants.

[0056] Examples 1-4 See Table 1 for the raw material composition and parts by weight of the silane-modified polymer sealant.

[0057] Weigh each material according to the material ratio of the silane-modified polymer sealant example 1-2 in Table 1, first put the silane-modified polymer resin into a clean and dry double planetary mixer, and then add hydrophobic fumed silica , Nano-calcium carbonate, 30-50% by weight of dehydrating agent, vacuumized and stirred at a speed of 50-100rpm for 10-30min; then gradually heated to 50-70°C, and stirred at a high speed of 1000-1500rpm for 30- After 90 minutes, until the sealant colloid is fine and uniform, cool it down to below 40°C; then add the remaining dewatering agent, continue to stir in vacuum, below 40°C, at a speed of 200-300rpm for 10-20min, then add the adhesion promoter. Vacuum, below 40°C, stirring at 200-300rpm for 10-20min; finally add organotin catalys...

Embodiment 5

[0063] A wrapping protection method for concrete members in the tidal range area, the wrapping protection structure is as follows figure 1 As shown, wherein, the concrete member matrix 1, the surface of the concrete member matrix 1 is painted with a silane impregnated layer 2, the silane impregnated layer 2 penetrates into the interior of the concrete member matrix 1, the surface of the silane impregnated layer 2 is painted with a primer coating 3, the primer The surface of the coating layer 3 is coated with a silane-modified polymer sealant layer 4 , and the surface of the silane-modified polymer sealant layer 4 is wrapped with a PVF tape wrapping layer 5 .

[0064] The wrapping protection method for concrete members in the tidal range area of ​​the present invention comprises the following steps:

[0065] The first step, substrate treatment

[0066] Use high-pressure fresh water, sandblasting or manual grinding to clean up the floating ash, laitance, slag, moss and loose pa...

Embodiment 6

[0078] On the basis of Example 5, scraping the silane-modified polymer sealant can work underwater if necessary, and the specific steps are as follows:

[0079] Use manual or mechanical grinding methods to clean the surface floating ash, laitance, slag inclusions, moss, marine organisms and loose parts at the lower limit of the tidal range of the concrete component matrix or within the range of 300mm underwater, and ensure that the surface of the concrete component matrix is ​​clean and firm , the surface treatment of the concrete member base includes the remaining pits, grooves, cracks and misalignment;

[0080] Scrape coating of the silane-modified polymer sealant can be done by using a glue gun or a scraper scraper to quickly beat or scrape the silane-modified polymer sealant onto the concrete surface, and apply it slowly, at a constant speed, by pressing, Just scrape it on the surface of the concrete member base, and fill the pits, grooves, cracks and staggered platforms l...

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Abstract

The invention relates to a method for wrapping protection of concrete members in a tidal zone. Aiming at special strict comprehensive corrosion environment factors in the tidal zone, the method can make the concrete members in the tidal zone reliable, durable and protective by combining a PVF wrapping protection technology with silane impregnation, special base coat, sealing protection of a novelsilane-modified sealant and an adhesion transition technology. The method has the advantages of simplicity, convenience and rapidity in construction, energy conservation, energy conservation and environmental protection, and creates notable socioeconomic performance by keeping preservative effect of a wrapping protection system efficient, lasting and reliable, thereby being promising in application prospect.

Description

technical field [0001] The invention relates to concrete surface corrosion protection technology, in particular to a wrapping protection method for concrete components in tidal range areas, and belongs to the technical field of anti-corrosion engineering. Background technique [0002] my country is a big ocean country. The construction of large-scale cross-sea bridges and other seaport projects continues to develop. The strength of marine infrastructure is further strengthened, and the seaports and port dredging projects of countries along the route are rapidly advancing. Therefore, the marine economy has become an important part of my country's economy. In the marine environment The corrosion problem of reinforced concrete engineering has been paid more and more attention in the field of engineering technology. The research on the durability of marine concrete at home and abroad has achieved a relatively unified understanding. Among them, the main factors affecting the durab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/64C09J171/00C09J175/04C09J11/04C09J11/06
Inventor 晁兵李承宇安云岐杜彬贾继华杨棕凯曹辉王小六
Owner 上海岐海防腐工程技术有限公司
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