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Hydraulic building compound anti-seepage system and system forming method

A hydraulic structure and composite anti-seepage technology, which is applied in construction, hydraulic engineering, sea area engineering, etc., can solve problems such as high water scour force, peeling of anti-seepage materials, threats to the durability and safety factor of hydraulic structures, etc. To achieve the effect of good elasticity and strong binding force

Active Publication Date: 2018-03-23
李泽月
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since in the field of non-water conservancy and hydropower, for example, the protective anti-seepage coating is applied to sports venues and civil buildings, the time of scouring it in contact with water is very short, and there is no major problem in use, while in the field of water conservancy and hydropower Apply the anti-seepage coating to concrete hydraulic structures (including dams, box culverts, channels, pipes, and tunnels), and hydraulic structures have to undergo long-term blistering, and the water has a strong erosion force. The traditional system is not suitable for humidity , low temperature construction environment and long-term water immersion, high-speed water erosion environment, after a certain period of time, the anti-seepage system cannot be bonded at all. Figure 8A -D), threatening the durability and safety factor of hydraulic structures

Method used

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  • Hydraulic building compound anti-seepage system and system forming method
  • Hydraulic building compound anti-seepage system and system forming method
  • Hydraulic building compound anti-seepage system and system forming method

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preparation example Construction

[0093] The preparation method of above-mentioned composite anti-seepage system is:

[0094] 1) Brush the first primer layer and / or epoxy putty layer on the concrete surface of the hydraulic structure, the amount of the first primer layer is 0.35kg / m 2 , if the concrete surface defect is serious, the first primer layer can be replaced by epoxy putty or the concrete defect can be leveled with epoxy putty after the first primer layer is applied, and the interval between painting and the next layer is 7-36 hours Hour;

[0095] 2) Spray or brush the second primer layer, the dosage is 0.1kg / m 2 , the interval between spraying or brushing and applying the next layer is 4 to 24 hours;

[0096] 3) Spray or brush the polymer elastomer material, the dosage is 3~7kg / m 2 , forming a coating film waterproof layer.

[0097] Wherein, and / or, increase step 1a) after step 1) according to 0.8kg / m 2 Spray 20-50 mesh silica sand;

[0098] And / or, step 4) is added after step 3) to coat a laye...

Embodiment 1

[0135] The composite anti-seepage system provided by the present invention is applied to the anti-seepage embodiment of the expansion joints of water delivery tunnels and box culverts. Since the water delivery tunnel does not need to be resistant to impact and wear, and does not need to be exposed to sunlight, it needs to be soaked in water for a long time. During construction, the surface of the base material belongs to the wet base surface. Therefore, the composite anti-seepage system used in this application field is: epoxy primer layer for wet interface + epoxy modified two-component polyurethane primer layer + two-component polyurea-based elastomer coating.

[0136] Among them, the water conveyance tunnel (such as Figure 4A ) and box culverts (such as Figure 4B ) expansion joints coated with the composite anti-seepage system provided in this embodiment.

[0137] Figure 4C It is a schematic structural diagram of the composite anti-seepage system in this embodiment. I...

Embodiment 2

[0139] For the anti-seepage embodiment of the composite anti-seepage system provided by the present invention applied to channels and aqueducts, since the channels and aqueducts do not need to be resistant to impact and wear, but need to be exposed to sunlight for a long time and alternate between water and anhydrous repeatedly, in this The application field uses the composite anti-seepage system as follows:

[0140] (1) for channels as indicated by arrows (such as Figure 5A ) expansion joints, the composite anti-seepage system used is: epoxy primer layer + one-component polyurethane primer layer + polyurethane elastomer coating + topcoat layer used on the dry interface;

[0141] (2) Used for aqueducts as shown by arrows (such as Figure 5B ) expansion joints, the composite anti-seepage system used is: epoxy primer layer + one-component polyurethane primer layer + acrylic elastomer coating + topcoat layer used on the dry interface.

[0142] Figure 5C It is a schematic str...

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Abstract

The invention provides a compound anti-seepage system. A primer layer and a membrane waterproof layer are formed in sequence on the surface of concrete of a hydraulic building, wherein the primer layer comprises a first coating and / or an epoxy putty layer and a second coating. The first coating is epoxy primer for the base surface of damp or dry concrete; the second coating is polyurethane primer;and the membrane waterproof layer is made of a polymer elastomer material. A silica sand layer is additionally arranged between the first coating and / or the epoxy putty layer and the second coating,and / or, the membrane waterproof layer is additionally provided with a finishing coat layer. The invention further provides an anti-seepage and protective method for the concrete surface. The binding force between the compound anti-seepage system provided by the invention and the concrete surface is high, elasticity is good, and the compound anti-seepage system is resistant to erosion and abrasion,capable of being adapted to a damp and low-temperature construction environment of hydraulic buildings such as a dam, a water delivery tunnel, a box culvert, a channel and a pipe, long-term dipping in water and the use environment of high-speed water flow erosion and is free of being softened and falling, safe and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering, and relates to a concrete protection and anti-seepage system for hydraulic structures (including: dams, channels, pipelines, tunnels, box culverts, etc.), a method for forming the system and materials, in particular to a composite Seepage control system and method of forming the system. Background technique [0002] Water conservancy engineering buildings include dams, water tunnels, aqueducts, channels, pipelines, etc. The main body is composed of concrete materials. Concrete has the characteristics of rich raw materials, low prices, and simple production processes. At the same time, concrete also has high compressive strength. Good durability, wide range of strength grades and so on. However, in the research on the durability of concrete buildings, it is found that defects such as construction joints, structural joints and concrete surface cracks become the main channels for water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/16C09D163/00C09D5/34C09D175/04C09D5/08C09D175/02
CPCC09D163/00C09D175/02C09D175/04E02B3/16C09D5/002C09D5/08C09D5/34
Inventor 李炳奇李泽月
Owner 李泽月
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