Those things about emery wear-resistant floor (Part 1)-Crafts

Preface

There are various methods for the basement floor.

The characteristics of PART01 emery wear-resistant floor

1.

Compared with ordinary concrete floors, emery floor has better wear resistance, compression resistance, impact resistance and longer service life

2.

The emery floor adds curing agent construction

1) Extremely strong wear resistance, pressure resistance and impact resistance

The emery floor itself has excellent wear resistance.

2) Anti-sand and dust

Anti-sanding and ashing are the main advantages of emery plus solidified floor
.
After curing agent construction, it can effectively improve the surface hardness (expressed by indentation diameter) and wear resistance (expressed by grinding pit length), the surface is denser, the integrity is better, and it can effectively prevent sanding and dusting;

3) Waterproof, oil-proof and anti-corrosion

Ordinary emery floors have pores invisible to the naked eye on the surface.
Water, oil and other corrosive liquids can penetrate into the floor through these pores and crevices
.
The most notable feature of the curing agent is its good sealing performance, which is like coating the floor with a film to protect it from corrosion
.

PART02 Emery plus curing floor acceptance standard

1.
The floor surface is firmly combined with the base layer, and there is no hollowing or sanding phenomenon;

2.
Surface quality: uniform color, no obvious color difference, no scratches, no slag inclusion, cracks on the surface are strictly prohibited, and hollow drums are not allowed;

3.
Gloss requirements: reach medium and high brightness, and the lamp has a reflective effect;

4.
Separation seam: evenly wide and narrow, clean inside the seam;

5.
The floor hardness is above 6.
5 on the Mohs scale (tested with a hardness tester);

6.
The trachoma rate is not higher than 3 per square meter
.

PART03 construction requirements

1.
The concrete strength is not less than C25;

2.
The water-cement ratio is as small as possible
.
Excessive water-cement ratio will cause bleeding on the concrete surface and reduce the compressive strength of the concrete surface.
Therefore, the water-cement ratio as small as possible should generally be controlled below 0.
5;

3.
Use commercial concrete as much as possible.
If mixing concrete on site, the slump should be controlled at 1~3cm; the slump of commercial concrete should be 12~14cm; the diameter of the larger gravel should not exceed 30mm;

4.
When the concrete thickness is greater than 8cm, use ordinary concrete for pouring; when the concrete thickness is less than 8cm, use fine stone concrete for pouring;

5.
The concrete is smoothed as it is poured, and the flatness is 2m and the range is not more than 2mm;

6.
Before surface construction, the base concrete should be vibrated sufficiently (not less than 5mm);

7.
The mud content of sand and gravel in concrete is not more than 2%;

8.
After vibrating the slurry, the bleeding of the concrete should be even.
For the phenomenon of water pockets, try to remove it and level it again, otherwise the emery floor construction cannot guarantee the flatness
.

PART04 construction technology

Emery floor construction

1.
The ground concrete is poured in sections, and it is smoothed as it is poured;

① When pouring multiple places at the same time, pay attention to the construction sequence from one direction, and consider the consistency of the mutual joint surface;

② The concrete is smoothed with a long roller or flattened with a long scraper;

③ 3~5 hours after the concrete is poured, there is no bleeding on the surface and the initial setting state
.

2.
Use a mechanical trowel with a round beating grout, and use a wooden trowel to close the edges in subtle places, mainly to calender the surface of the concrete and reduce the laitance, and pay attention to the trowel in the same direction as the pouring;

3.
Spread the wear-resistant aggregate twice, and for the first time, evenly spread 2/3 of the amount of wear-resistant material on the cement floor that has been troweled;

4.
Spread the remaining 1/3 of the wear-resistant material evenly on the surface of the concrete for the second time, and use a mechanical trowel with a disk to crisscross the work at least twice;

5.
Use a mechanical trowel (metal disc) to trowel back and forth many times, and use a manual trowel to cooperate with the construction at the subtle corners, and determine the next process time according to the temperature and humidity;

6.
When the surface of the floor starts to harden, use a mechanical trowel equipped with a metal blade to polish and calender, and repeat the operation 3 to 4 times; (construction personnel must wear soft flat shoes to avoid damaging the surface) fine corners and corners by hand Calender

7.
Carry out water maintenance on the polished wear-resistant ground, (mainly to prevent the evaporation of surface water and ensure the steady growth of the strength of the wear-resistant material) The curing time is 7 days;

8.
After the surface is cured for a certain period of time (5-6 hours after the completion of the wear-resistant material floor), use a mechanical trowel with metal blades for the final polishing and leveling;

9.
Die and sub-warehouse cutting (this article can be based on the actual situation and the needs of the owner).
The unloading of the mold can be carried out on the second day after the emery floor is completed.
Be careful not to damage the edge of the floor during the operation; the sub-warehouse cutting seam is in the emery ground On the third day after the completion of the ping, the size of the warehouse is determined by Party A;

Permeable liquid hardener (commonly known as hardener) construction

The natural emery floor should be cured for more than 14 days, and the colored emery floor usually needs to be cured for 28 days.
After the color has matured, the penetrating liquid hardener can be used for construction
.
The specific approach is as follows:

1.
Before construction, clean and remove debris, oil stains, paint, curing agents, etc.
on the ground
.
If there are potholes and cracks, cement-based repair and caulking mortar should be used to repair them in advance and cure for 3 days
.
If there is no need to repair, then directly construct;

2.
Sprinkle water on the base layer to soak all the base layer, not too much;

3.
Use a 50-mesh resin polishing pad to polish the base layer to polish away the scum and stains on the base layer, so that the base layer is gradually smooth without roughness;

4.
After the 50-mesh grinding is completed, use a 150-mesh resin grinding disc.
After the grinding is completed, use a high-power vacuum cleaner to suck up the mud and sewage on the surface of the base layer;

5.
Sprinkle water on the surface of the base layer and polish with a 300 mesh resin polishing pad (it is required to grind the ground uniformly in a well-shaped pattern, and the machine speed is one second step as the standard to remove residual materials and fine scratches on the ground).
After polishing, use 500 mesh Grind, then vacuum the sewage and ventilate the base to dry;

6.
After the base layer is dry, the surface is slightly white.
Apply the concrete sealing curing agent, sprinkle the material evenly, spread it evenly with a mop, and keep the base layer surface moist for 30 minutes.
Sprinkle the material and use a mop to evenly wet the base layer;

7.
After 30 minutes, the surface of the concrete sealing curing agent begins to be sticky.
You need to sprinkle water on the surface and push it back and forth with a long-bristled brush or scrubber to dilute the excess curing agent and better penetrate into the base layer.
1 hour After that, use a vacuum cleaner to suck up the excess materials and water to ensure that the base layer is dry for more than 12 hours;

8.
After 12 hours, sprinkle water on the surface of the base layer of the construction material, polish it with a 500 mesh resin polishing pad, remove the excess material, and then polish it with 1000 mesh.
After polishing, use a vacuum cleaner to suck up the sewage;

9.
After 12 hours, the base layer has been basically dry.
Use a 2000 mesh resin abrasive pad to polish and make the surface gradually appear shiny;

10.
Grind 3 to 5 times crosswise and crosswise for each number of grinding discs;

11.
Special treatment

①Corner processing: Large machines can only grind large areas, and for corners, portable angle grinders should be used for grinding and polishing.
The method is the same as that of large-surface construction;

②When the strength of the base layer is poor and the sanding is serious, the base layer needs to be reinforced first, and then constructed according to the normal process:

First use a 300-mesh resin polishing pad to polish away the scum on the surface of the base layer, and then sprinkle the concrete sealing curing agent evenly to make it fully wet and penetrate into the base layer; 12 hours later, when the concrete sealing curing agent is cured, the base layer has a certain strength After improvement, follow the normal process: 50 mesh polishing (water milling) → 150 mesh polishing (water milling) → 300 mesh polishing (water milling) → construction materials → 12 hours of drying and curing → 500 mesh polishing (water milling) → 1000 mesh polishing (water milling) →2000 mesh grinding (dry grinding)
.

Customers are paying more and more attention to the basement.
The beautiful effect of the floor is inseparable from the refined control during the construction process.
In addition to the strict implementation of the corresponding process and construction methods, the prevention of common quality problems also requires attention.
The editor will be in the next In this article, I will give you a detailed explanation, so stay tuned
.