Damage repair and anti-corrosion coating of anti-collision guardrail

The early deterioration of concrete anti-collision walls always occurs in large numbers, and the main reason for its damage is that the concrete components are directly exposed to the natural environment, and are exposed to acids, alkalis, and especially salt and snow melting agents

Common snow melting agents are inorganic snow melting agents with "chloride salt" as the main component, such as sodium chloride, calcium chloride, magnesium chloride, potassium chloride, etc.

The other type is an organic snow melting agent with "potassium acetate" as the main ingredient.

The erosion, corrosion, neutralization, freeze-thaw damage of the concrete anti-collision wall caused by the snow melting agent, the ubiquitous alkali-aggregate reaction, often occurs within a few years, such as cracks, concrete peeling and barring, etc.

Commonly used snow melting agents are mainly salt.

"Anti-collision guardrail repair mortar" can be firmly repaired for a long time.

Note: "Anti-collision guardrail repair mortar" has super early strength performance, and the final strength after repair can reach more than 50 MPa

Features:

1.

Compared with the previous reinforced concrete structure, it has higher strength and aging resistance

2.

It has high compressive strength, rapid curing and good bonding performance; it has good water retention performance and improves the durability of concrete

3.

4.

Construction process:

1.

1.

2.

3.
Use a high-pressure water gun to clean the surface of the anti-collision wall
.

4.
Use an electric wire brush to polish the surface of the anti-collision wall to remove impurities on the surface
.

5.
Use a high-pressure fan to remove the dust on the surface of the anti-collision wall
.

6.
After the surface of the anti-collision guardrail is soaked with water, the "anti-collision guardrail repair mortar" is mixed according to the proportion of water, applied to the surface of the anti-collision guardrail and polished
.

7.
"Anti-collision guardrail repair mortar" will set in 15-20 minutes to avoid cracks caused by rapid loss of water.
It needs to be sprinkled to maintain and keep the surface moist.
There is no need to maintain after 40 minutes
.

2.
The surface of the anti-collision guardrail is slightly weathered and repaired

1.
Use a high-pressure water gun to clean the surface of the anti-collision guardrail
.

2.
Use an electric wire brush to polish the surface of the anti-collision fence to remove impurities on the surface
.

4.
Use a high-pressure fan to remove dust from the anti-collision guardrail
.

5.
For the overall consistency, the repaired surface of the damaged part of the anti-collision guardrail must also undergo the overall surface repair process at the same time
.

6.
After the surface of the anti-collision guardrail is soaked with water, mix the "anti-collision guardrail repair mortar" according to the proportion of water, apply it to the surface of the anti-collision guardrail, and then finish it
.

7.
"Anti-collision guardrail repair mortar" will set in 15-20 minutes to avoid cracks caused by too fast loss of water.
It needs to be sprinkled to maintain and keep the surface moist.
There is no need to maintain after 40 minutes
.

Initial setting effect after repairing with "anti-collision guardrail repair mortar"

Special anti-corrosion coating for anti-collision guardrail and bridge

"Anti-collision guardrail and bridge special anti-corrosion coating" combines the advantages of permeable and film-forming concrete protective materials, and through clever molecular design, the protective materials form a three-layer protective system, which can effectively increase the service life of concrete and has a good The decorative effect
.

The "anti-corrosion coating for anti-collision guardrails and bridges" can penetrate into concrete 1mm-3mm, and chemically react with the active ingredients in the concrete to form a firm silicate structure.
At the same time, the film-forming coating gives the material good anti-aging properties.
Performance, high and low temperature resistance, chemical corrosion resistance and color toning performance
.
"Special anti-corrosion coating for anti-collision guardrails and bridges" is a two-component protective material with excellent resistance to chloride ion erosion, acid and alkali erosion, waterproof, breathable, and anti-carbonization properties, which can effectively increase the service life of concrete structures and improve The appearance of concrete
.

Compared with acrylic paint, silicone-acrylic paint and water-based fluorocarbon paint, "anti-collision guardrail and bridge special anti-corrosion paint" has more excellent water resistance, chloride ion corrosion resistance and freeze-thaw cycle resistance.
At the same time, "fluorosilicone system The water vapor transmission rate of the coating film of "Special Anti-corrosion Coating for Bridges" is as high as 70%, which effectively avoids the decrease or even failure of the protective ability caused by the coating film bulge
.

Features:

Excellent waterproof and anti-chloride ion corrosion performance, can reduce more than 90% of water penetration and more than 85% of chloride ion penetration, greatly delaying the deterioration of concrete; excellent weather resistance, after high and low temperature cycles, artificial aging and ultraviolet radiation, Coating performance remains intact; excellent resistance to carbonation, can greatly delay the rate of carbonization of concrete; resistance to chemical corrosion such as acid, alkali and salt; good water vapor permeability, water vapor transmission rate up to 70%; color adjustable , Provide color samples in GSB16-1629-2003 (mainly cement gray and beige, customized if you have special requirements), with bright, semi-gloss and matte effects, which can decorate concrete; water-based system, green and environmentally friendly ; It has good adhesion to the substrate, it can be rolled, brushed and sprayed, and it can penetrate into a film at low temperature, and it is very easy to construct;

Construction process:

1.
Basic treatment: For newly built concrete structures, the surface must be clean, free of oil, floating ash and coniferous material
.
For newly-built defective concrete and old concrete, repair should be carried out first and the base surface should be leveled, and then the concrete anti-corrosion material should be painted after the repairing layer is cured
.
It is recommended to use a high-pressure water gun for cleaning and brush when the basic water content is less than 60%
.

2.
Material mixing: In a clean container, add component B to component A and mix with a low-speed mixer.
Be sure to stir until there is no color difference in each part
.

3.
Construction: Airless spraying or roller coating can be used for construction
.
Construction is strictly forbidden in rain and snow.
In principle, it is enough to paint once.
If there is obvious color difference or defect, you can paint the surface for the second time after the surface is dry for the first time
.

The effect of "anti-collision guardrail and bridge special anti-corrosion coating" after use