Polyvinyl chloride-polyvinylidene emulsion based concrete bridge structure surface protective coating material and preparation method thereof

A chlorine partial emulsion and bridge structure technology, which is applied in coatings and other directions, can solve problems such as poor anti-aging performance, high coating dosage, and loss of protective effect of coatings, and achieve excellent anti-aging performance, simple painting process, and excellent protection effect of effect
CN103013240BInactive Publication Date: 2015-04-08CCCC CIVIL ENG SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CCCC CIVIL ENG SCI & TECH
Publication Date
2015-04-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a polyvinyl chloride-polyvinylidene emulsion based concrete bridge structure surface protective coating material and a preparation method thereof. Most of existing concrete surface protective coatings are poor in carbonization resistance and ageing resistance and complex in painting process. The coating material is composed of 80-90 parts of polyvinyl chloride-polyvinylidene emulsion, 1-3 parts of bentonite, 0.3-1 part of aqueous antiager, 1-5 parts of titanium dioxide, 1-5 parts of sericite, 2-10 parts of functional assistant system and 2-9 parts of adjustment assistant system, wherein the adjustment assistant system is composed of antifoaming agent, dispersing agent and leveling thickener according to the mass ratio of 2:1:4. The coating material enables concrete to have excellent protective effects under accelerated carbonizing conditions, carbonization of the concrete is decelerated, the coating material is excellent in ageing resistance, the coating painting process is simple, all procedures from production to construction are safe and environment-friendly, and environment pollution is avoided.
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Description

technical field

[0001] The invention belongs to the technical field of concrete protection, and in particular relates to a protective coating material for the surface of concrete bridge structures based on chlorine partial emulsion and a preparation method thereof. Background technique

[0002] Concrete is a widely used building material with excellent durability, but under the long-term erosion of the general atmospheric environment (carbon dioxide, water, oxygen, etc.) and its own performance defects (pores, micro-cracks, etc.), concrete carbonation will occur Corrosion, and directly lead to the occurrence of corrosion of its internal steel bars, thus causing a series of diseases such as concrete spalling, rust swelling cracks, etc., seriously restricting the durability and safety of concrete bridges.

[0003] Carbonation of concrete is mainly due to CO 2 Diffusion penetrates into the interior of the concrete, and the pores near the reinforcement in the concrete Ca(OH) ...

Claims

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