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A kind of road and bridge water emulsion asphalt waterproof coating and preparation method thereof

A water-emulsion asphalt and waterproof coating technology, applied in asphalt coatings, coatings, etc., can solve the problems of poor adhesion of the base layer, poor storage stability, and slow drying speed, and achieve strong adhesion, small viscosity changes, and fast drying speed fast effect

Active Publication Date: 2022-08-09
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve many problems such as poor storage stability, slow drying speed, and poor adhesion of the base layer of the existing road and bridge waterproof coatings, and adopt emulsion compounding and other methods to obtain a high solid content, fast drying, and stable storage. , strong adhesion, water-based asphalt coating that meets two road and bridge standards at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Meet the JT / T 535-2015 standard I type formula, the ratio is: water 8, heavy calcium carbonate 20, sodium bicarbonate 0.04, hydroxymethyl cellulose QP15000H 0.06, dispersant SN5040 0.5, wetting agent CF-10 0.3 , polyether modified silane 0.1, polyvinyl alcohol 17-99 3.0, Texanol 1.4, sodium dodecyl benzene sulfonate 3.2, Tuwen-80 0.2, Welan gum 1.2, emulsified asphalt 43, natural rubber latex 8, pure acrylic emulsion 11.

[0033]According to the above method, the obtained waterproof coating product meets the requirements of JT / T 535-2015 standard type I. In addition to meeting the standard requirements, its main advantage is that compared with the standard, the surface dry time is reduced from 4 hours to 4 hours. It is reduced to 0.5 hours, the dry time is reduced from 10 hours to 2.5 hours, the bonding strength is increased from 0.4MPa to 1.2MPa, the high temperature shear resistance is increased from 0.16MPa to 0.65MPa, and the storage stability is significantly impro...

Embodiment 2

[0035] Meet the JT / T 535-2015 standard type II formula, the ratio is: water 7, sodium bentonite 14, sodium bicarbonate 0.03, hydroxymethyl cellulose QP15000H 0.04, water glass 0.4, wetting agent CF-10 0.2, poly Dimethicone 0.03, Polyvinyl Alcohol 17-92 3, Texanol 1.3, Sodium Lauryl Sulfate 2.5, NP-10 0.2, Welan Gum 0.8, Emulsified Asphalt 44, Neoprene Latex 10, VAE Latex 4.5, Styrene Acrylic Emulsion 12.

[0036] According to the above method, the obtained waterproof coating product meets the requirements of JT / T 535-2015 standard type II. In addition to meeting the standard requirements, its main advantage is that compared with the standard, the surface dry time is reduced from 4 hours to 4 hours. It is reduced to 1.2 hours, the dry time is reduced from 10 hours to 3.8 hours, the bonding strength is increased from 0.5MPa to 1.6MPa, the high temperature shear resistance is increased from 0.16MPa to 0.48MPa, and the storage stability is significantly improved. The storage stabi...

Embodiment 3

[0038] Meet the JC / T 975-2005 standard PB I formula, the ratio is: water 9, ground calcium carbonate 24, potassium citrate 0.05, hydroxymethyl cellulose QP30000H 0.05, dispersant sodium tripolyphosphate 0.6, wetting agent CF-10 0.25, polyoxypropylene oxyethylene glycerol ether 0.1, polyvinyl alcohol 17-99 2.0, mineral oil 1.2, sodium lauryl sulfate 2.8, AEO-9 0.25, welan gum 1.3, emulsified asphalt 40.4, natural rubber latex 5, nitrile latex 4, pure acrylic emulsion 9.

[0039] According to the above method, the obtained waterproof coating product meets the requirements of JC / T 975-2005 standard PB I type after testing. In addition to meeting the standard requirements, its main advantage is that compared with the standard, the surface dry time is reduced by 4 hours reduced to 0.8 hours, dry time reduced from 8 hours to 2.6 hours, tensile strength increased from 0.5 MPa to 1.2 MPa, bond strength increased from 0.4 MPa to 1.1 MPa, and the storage stability test for 30 days The v...

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Abstract

The invention discloses a water-emulsion asphalt waterproof coating for roads and bridges and a preparation method thereof. The water-emulsion asphalt waterproof coating for roads and bridges includes components by weight: 3-18 parts of water, 5-50 parts of fine powder, 0.01-0.1 part of pH regulator, 0.01-0.1 part of hydroxymethyl cellulose, dispersed 0.1-1 part of wetting agent, 0.05-0.5 part of wetting agent, 0.005-0.2 part of defoamer, 0.5-5 part of adhesion aid, 0.8-1.5 part of film-forming aid, 0.5-10 part of quick-drying aid, stable 0.05-0.5 parts of acrylic acid emulsion, 0.3-1.5 parts of thickener, 30-70 parts of emulsified asphalt, 5-30 parts of acrylic emulsion, and 2-30 parts of polymer latex. The prepared water emulsion asphalt waterproof coating for roads and bridges has high storage stability, fast drying speed and stronger adhesion with the base layer.

Description

technical field [0001] The invention belongs to the field of bridge waterproofing, and more particularly relates to a water-emulsion bitumen waterproof coating for roads and bridges and a preparation method thereof. Background technique [0002] The existing asphalt-based waterproof coatings for roads and bridges (roads and bridges) that can meet industry standards are mainly obtained by compounding emulsified asphalt and chloroprene latex, and then adding other latex modifications, such as patents CN03131701.4, CN201210090043.4, etc. The existing problems include: 1. The delamination is serious, and there are almost no materials that do not need to be stirred again on the construction site to be used; 2. The solid content is low and the drying speed is slow. It generally takes more than ten hours for subsequent construction, resulting in construction efficiency. Low; 3. Multiple spraying can only meet the construction thickness requirements, and the surface of each layer is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D7/61C09D7/63C09D7/65
CPCC09D195/00C08K2003/265C08L2205/035C08L7/02C08L33/04C08K3/26C08K5/42C08L11/02C08L31/04C08L25/14C08K3/346C08L9/04C08K5/098C08K5/41
Inventor 李文志吴志强于猛朱明广张磊魏晓虎段文锋
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD