Special waterproof coating for roads and bridges, and preparation method thereof

A waterproof coating, road and bridge technology, used in asphalt coatings, chloroprene homopolymer coatings, coatings, etc., can solve problems such as personal safety hazards, inconvenience in life, property damage, etc., achieving a high degree of automation and no materials. Toxic and non-polluting effect

Inactive Publication Date: 2020-02-25
南通荣成路桥材料科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Building leakage is a key factor affecting the durability and service life of building structures, and it will bring people safety hazards, property losses and inconvenience to life

Method used

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  • Special waterproof coating for roads and bridges, and preparation method thereof

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preparation example Construction

[0051] Among the present invention, the preparation method of described cationic emulsified bitumen at least comprises the following steps:

[0052] (1) Preparation of cationic emulsifier: heat water to 40-60°C with stirring, then add lignin and inorganic base, continue to stir and heat to 70-80°C, react for 2-4h, and discharge to obtain the product;

[0053] (2) Preparation of cationic emulsified asphalt: mix the cationic emulsified asphalt prepared in step (1) with water, heat to 60-70°C while stirring, then add asphalt, continue to stir and heat to 80-90°C, and the discharge is ready have to.

[0054] Preferably, in the step (1), the inorganic base is at least one selected from sodium hydroxide, magnesium hydroxide, magnesium hydroxide and aluminum hydroxide.

[0055] As a preference, in the step (1), the weight ratio of water, lignin and inorganic base is 1:(1.9-2.1):(0.3-0.4).

[0056] As a preference, in the step (2), the weight ratio of the cationic emulsifier to the as...

Embodiment 1

[0079] Embodiment 1 provides a special waterproof coating for roads and bridges, which includes the following components by weight percentage: 25% neoprene latex, 15% styrene-butadiene latex, 50% asphalt, 6% water, and 4% additives.

[0080] The chloroprene latex has a solid content of 50 wt% and a dynamic viscosity of 18 mPa·s, purchased from Shanxi Huochangchang Chemical Synthetic Rubber Co., Ltd., model: CRL50LF.

[0081] The dynamic viscosity of the styrene-butadiene latex at 25° C. is lower than 100 mPa·s; the pH value is 4-6, purchased from but not limited to Shandong Qiaolong Environmental Protection Technology Co., Ltd., model: Cationic 50.

[0082] The asphalt is cationic emulsified asphalt, C 25,3 Standard viscosity is 12s; The preparation method of described cationic emulsified bitumen comprises the following steps:

[0083] (1) Preparation of cationic emulsifier: heat 100Kg of water to 50°C with stirring, then add 200Kg of lignin and 35Kg of sodium hydroxide, cont...

Embodiment 2

[0092] Embodiment 2 provides a special waterproof coating for roads and bridges, including the following components by weight percentage: 20% neoprene latex, 10% styrene-butadiene latex, 60% asphalt, 5% water, and 5% additives.

[0093] The chloroprene latex has a solid content of 50 wt% and a dynamic viscosity of 18 mPa·s, purchased from Shanxi Huochangchang Chemical Synthetic Rubber Co., Ltd., model: CRL50LF.

[0094] The dynamic viscosity of the styrene-butadiene latex at 25° C. is lower than 100 mPa·s; the pH value is 4-6, purchased from but not limited to Shandong Qiaolong Environmental Protection Technology Co., Ltd., model: Cationic 50.

[0095] The asphalt is cationic emulsified asphalt, C 25,3 Standard viscosity is 12s; The preparation method of described cationic emulsified bitumen comprises the following steps:

[0096] (1) Preparation of cationic emulsifier: heat 100Kg of water to 50°C with stirring, then add 200Kg of lignin and 35Kg of sodium hydroxide, continue ...

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Abstract

The invention relates to the technical field of waterproof coatings, and concretely relates to a special waterproof coating for roads and bridges, and a preparation method thereof. The special waterproof coating for roads and bridges is least prepared from 20-30 wt% of neoprene latex, 10-20 wt% of styrene-butadiene latex, 40-60 wt% of asphalt, 0-10 wt% of water and 0.5-5 wt% of auxiliary agents. The waterproof coating has wide temperature adaptability and strong construction operability, i.e., the waterproof coating does not flow at a high temperature of 140-180 DEG C and does not crack underthe action of a dynamic load at a low temperature of -20 to -30 DEG C. The waterproof coating has the advantages of high curing and film-forming speed, good film-forming toughness, high binding power,high shearing strength, high mechanization and automation degree, nontoxic materials and no environmental pollution.

Description

technical field [0001] The invention relates to the technical field of waterproof coatings, in particular to a special waterproof coating for roads and bridges and a preparation method thereof. Background technique [0002] Building leakage is a key factor affecting the durability and service life of building structures, and it will bring people personal safety hazards, property losses and inconvenience to life. The quality of building waterproofing projects directly affects the normal use and life of buildings and structures, and waterproof materials are an important factor affecting waterproofing projects. [0003] Mixing various rubbers in asphalt can overcome the shortcomings of high temperature softening and low temperature embrittlement of asphalt itself, improve the tear resistance in winter, and no cracks will appear at a low temperature of 25°C; the anti-melt performance in summer can also be improved. Improvement, no softening at high temperature. For this reason...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D111/02C09D109/08C09D7/65
CPCC08L2205/035C09D7/65C09D195/00C08L9/08C08L11/02C08L97/005
Inventor 奚佳伟
Owner 南通荣成路桥材料科技开发有限公司
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