Reasons for basic treatment before floor construction

Floor treatment

In the process of floor construction, base surface treatment is a crucial link

The treatment of the base surface not only affects the reliability of the coating and the ground, but also affects the smoothness and brightness of the coating, which is the key to the epoxy floor construction

Epoxy floor has very high requirements for base surface treatment.

Reasons for basic treatment before floor construction

1.

2.

3.

The dirty surface of the plain ground will affect its adhesion, so the epoxy floor paint needs to be treated with the plain ground before construction, so as to highlight the characteristics of the epoxy floor coating, and the floor surface to be smooth, seamless, bright and beautiful The effect

Floor construction requirements

• The concrete strength requirement is above C25;

• It is recommended that the concrete be used as virgin paste for finishing;

• Waterproof and moisture-proof treatment is recommended for the first layer;

• The flatness requires that the maximum height difference of the 2M ruler is less than 3mm;

• The construction temperature is generally above 5°C, and the humidity is below 85%;

• The newly poured concrete must be cured until the surface is sufficiently dry before construction can be carried out
  .
  

Basic treatment steps

1.
Preliminary cleaning

1.
Use a broom to clean up the garbage on the ground;

2.
Where there is water, the water source should be cut off first, and the surface water should be removed, and then try to make the ground dry (if the ground to be constructed is a first floor or a basement, it should also consider whether it needs to be waterproofed and moisture-proof);

3.
Check the waterproof and moisture-proof effect
.
(A.
It does not meet the requirements of waterproof and moisture-proof, do not use paint layer.
b.
When testing, every 100 square meters shall be covered with one square meter of nylon film, and the surroundings shall be sealed with tape paper.
After 48 hours, see if the color changes
.
The color becomes darker or The presence of water droplets indicates that the moisture-proof has failed
.
)

4.
Use organic solvents (such as thinner, xylene, etc.
) to clean and dry the oily areas;

5.
Places with paint or other unknown pollutants should be properly treated, the methods include sanding or scrubbing with organic solvents, etc.
;

6.
According to the actual situation, see if you need to do another cleaning;

7.
If it is an old ground: Use a shovel to remove the base surface (old paint, hollow drum, and shell layer) before cleaning and polishing
.

2.
Polish the ground

1.
Fully polish with a vacuum polishing machine:

Provides appropriate roughness for the terrazzo base surface and the smoother and denser cement base surface
.

①Remove the floating dust that is not easy to clean on the surface and roughen the base surface to enhance the bonding force of the coating and the ground;

②The roughness of the base surface to be treated is basically smoothed to level it
.

Refurbishment project steps

If the ground is an old ground, the following treatments should be carried out:

1.
Use water-based rigid mortar to fill up and repair the uneven ground to meet the requirements of leveling the ground;

2.
To repair wide cracks and potholes, it is best to use quick-drying solvent-free epoxy resin paint to repair quartz sand;

3.
For expansion joints, clean up the debris first, and then use quick-drying solvent-free epoxy resin to coat with quartz sand for repair;

4.
For small cracks, first use a mill to cut into V-shaped grooves, and use quick-drying solvent-free epoxy mortar to fill the joints;

5.
After curing, use sandpaper to smooth and clean the ground
.