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Composite waterproofing layer and preparation and construction method thereof

A waterproof layer and waterproof mortar technology, applied in the field of materials, can solve the problems of poor waterproof structure stability, waterproof structure damage, poor adhesion, etc., and achieve the effects of reducing water leakage, stable structure and improving quality.

Pending Publication Date: 2018-10-26
GUANGZHOU METRO GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the water level of the groundwater in the construction site is high, the water pressure of the groundwater is high, and the groundwater is easy to penetrate to the surface of the concrete base. Due to the poor adhesion between the rubber asphalt waterproof coating layer and the concrete layer, the infiltrated groundwater is easy to Water leakage occurs between the rubber asphalt waterproof coating layer and the concrete layer, resulting in damage to the waterproof structure
Therefore, the existing waterproof structure has the disadvantage of poor stability

Method used

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  • Composite waterproofing layer and preparation and construction method thereof
  • Composite waterproofing layer and preparation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Spray concrete on the base surface of the project to form a concrete primary lining; spray polymer waterproof mortar on the concrete primary lining to form a polymer waterproof mortar layer; spray asphalt waterproof coating on the polymer waterproof mortar layer to form an asphalt waterproof coating layer, and obtain Composite waterproof layer; tie steel bars on the composite waterproof layer and pour concrete to form the second concrete lining.

[0063] Among them, the polymer waterproof mortar includes neoprene latex and styrene-butadiene rubber latex.

[0064] The asphalt waterproof coating comprises 40 parts by weight of carboxyl neoprene emulsion, 60 parts by weight of vulcanized rubber modified anionic emulsified asphalt, 0.3 parts by weight of silicone defoamer, 1.2 parts by weight of hindered amine light stabilizer, 0.5 parts by weight of rosin soap, 0.3 parts by weight of sodium polynaphthalene sulfonate, 0.5 parts by weight of sodium alkyl sulfate, 1.0 parts b...

Embodiment 2

[0067] Spray concrete on the base surface of the project to form a concrete primary lining; spray polymer waterproof mortar on the concrete primary lining to form a polymer waterproof mortar layer; spray asphalt waterproof coating on the polymer waterproof mortar layer to form an asphalt waterproof coating layer, and obtain Composite waterproof layer; tie steel bars on the composite waterproof layer and pour concrete to form the second concrete lining.

[0068] Among them, the polymer waterproof mortar includes neoprene latex and styrene-butadiene rubber latex.

[0069] The asphalt waterproof coating comprises 20 parts by weight of carboxyl neoprene emulsion, 50 parts by weight of neoprene emulsion, 30 parts by weight of vulcanized rubber modified anionic emulsified asphalt, 0.6 parts by weight of silicone defoamer, 1.5 parts by weight The liquid mixture of hydrophilic 2-(2-hydroxyphenyl)-benzotriazole ultraviolet absorber and hindered amine light stabilizer in parts by weight...

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Abstract

The invention provides a composite waterproofing layer and a preparation and construction method thereof. The method comprises the steps that polymer waterproofing mortar is sprayed on a concrete primary lining to form a polymer waterproofing mortar layer which adheres to the concrete primary lining; an asphalt waterproofing coating is sprayed on the polymer waterproofing mortar layer to form an asphalt waterproofing coating layer which adheres to the polymer waterproofing mortar layer to obtain a composite waterproofing layer, wherein the asphalt waterproofing coating is formed by negative ion emulsified asphalt modified by vulcanized rubber, rubber emulsion, additive and filler, and the filler comprises at least one of fumed silica and barium sulfate; reinforcing bars are fastened on thecomposite waterproofing layer, and a concrete secondary lining is formed by concrete pouring. The concrete primary lining, the polymer waterproofing mortar layer, the asphalt waterproofing coating layer and the concrete secondary lining can firmly adhere to each other, the composite waterproofing layer has the advantages of stable structure and the like, undesirable phenomena of water leakage andthe like are reduced, and therefore the quality of a waterproofing project is improved.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing and constructing a composite waterproof layer and a composite waterproof layer. Background technique [0002] In order to ensure the safety of underground engineering, the existing technology will carry out waterproof treatment on the construction base of underground engineering. Usually, a concrete layer is formed on the construction base surface, and then a rubber asphalt waterproof coating layer is formed on the concrete layer. The base surface of the construction shall be waterproofed. [0003] When the water level of the groundwater in the construction site is high, the water pressure of the groundwater is high, and the groundwater is easy to penetrate to the surface of the concrete base. Due to the poor adhesion between the rubber asphalt waterproof coating layer and the concrete layer, the infiltrated groundwater is easy to Water leakage occurred ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/71C09D195/00C09D121/02C09D7/61
CPCC04B41/52C04B41/71C08K2003/3045C09D195/00C09D7/61C08L21/00C08K3/36C08K3/30C04B41/48C04B41/478
Inventor 林志元黄金星苏振宇熊辉李晓亮吴刘远见黄志辉汪高文李冰茹刘程陈安艳陈荣泰李圣高建强
Owner GUANGZHOU METRO GRP CO LTD