Concrete coating protecting system and construction method

Abstract

The invention discloses a concrete coating protecting system. The concrete coating protecting system comprises a concrete permeating type primer and a high-build weather-resistant finishing coat, wherein the permeating type primer comprises a component A1 and a component B1 with the mass ratio of 3-1 to 1-1; the high-build weather-resistant finishing coat comprises a component A2 and a component B2 with the mass ratio of 1-3 to 3-1. The invention also provides a construction method. According to the concrete coating protecting system, the permeating type primer is capable of improving the intensity of a foundation and preventing the foundation form cracking; the high-build weather-resistant finishing coat is high in solid content, low in viscosity, environmentally friendly, fast to cure, short in period, high in tensile strength and elongation percentage, and outstanding in pursuit performance. Therefore, the concrete coating protecting system is outstanding in alkali resistance, ageing resistance, resist to chloride ion penetration, and capable of prolonging the service life of a concrete structure.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a concrete coating protection system and a construction method. Background technique [0002] The basic way of anti-corrosion of reinforced concrete building structure is to maximize the anti-chloride ion permeability of concrete itself by optimizing design and construction to limit the penetration of environmental corrosive media (chloride, oxygen and water, etc.) into concrete, thereby preventing steel corrosion. Mainly include: Properly increase concrete strength and cement dosage, apply high-performance concrete, ensure the thickness of steel bar protective layer, avoid cracking or strictly control the width of cracks, improve the compactness of concrete, add anti-corrosion agent for steel bar, external coating protection, coating (Plating) layers of steel bars, cathodic protection, etc. [0003] Concrete surface coating protection is the most effective and economical p...

AI Technical Summary

Problems solved by technology

These materials generally have the disadvantages of short protection life, high maintenance cost, and poor environmental protection.

Especially when there are cracks in the concrete base, the protective coating on the surface will crack and lose its protective effect.

[0005] Chinese patent CN101456756A discloses "concrete structure heavy-duty anti-corrosion nano-composite coating and protective method", which includes nano-modified epoxy sealing coating, nano-modified epoxy miracic iron intermediate paint, nano-modified fluorine-containing polyurethane topcoat or Silicone acrylic topcoat or fluorine-containing polysiloxane topcoat improves the adhesion and anti-corrosion life of the protection system. However, there is no detailed description on flexibility. The protection system corresponds to the matching thickness and construction ...

Images