What are the requirements for making concrete floors?

1, the strength of foundation concrete should reach above C25, the water cement ratio should be controlled below 0.50, and the slump of concrete should be controlled at 70- 100mm, so as to minimize the segregation of concrete mixture and control bleeding.

2. In order to ensure that the concrete mixture has enough fluidity and is beneficial to the construction, it is suggested to add appropriate admixture to the concrete.

3. The concrete at the grass-roots level shall be poured and vibrated according to the standard of high-quality concrete, and the size shall be accurate to reduce laitance.

4. The surface of the hardener shall be constructed simultaneously with the concrete structure layer. If it is necessary to construct the leveling layer at the same time, it is suggested that the leveling layer should be made of fine stone concrete with a thickness of not less than 50mm, and telescopic steel mesh should be considered.

5, the corner of the concrete construction at the grass-roots level, to ensure that the concrete vibrating compaction, and should take additional strengthening treatment.

Extended data

building technology

1. surface treatment: remove the laitance layer on the concrete surface evenly with a mechanical trowel with a disc;

2. First paving: In the initial setting stage, the specified amount of 2/3 hardened and wear-resistant floor material is evenly spread on the concrete surface, and then polished with a low-speed trowel.

3. Leveling with scraper: Use a 6m scraper to evenly level the hardened wear-resistant material along the horizontal and vertical directions, and roughly level it.

4. Second paving: evenly spread the specified amount of 1/3 color hardened wear-resistant material (the surface of the wear-resistant material that has been polished for the first time) and polish it again with a trowel.

5. Surface polishing: according to the hardening condition of concrete, adjust the angle of the blade on the polishing machine to polish the surface layer to ensure that the surface is flat and smooth.

6. Maintenance and expansion of base surface: The surface of wear-resistant and hardened ground shall be maintained within 4 ~ 6 hours after the construction is completed, so as to prevent the rapid evaporation of surface moisture and ensure the steady growth of the strength of wear-resistant materials.

Baidu encyclopedia-concrete hardening floor

Baidu encyclopedia-concrete wear-resistant floor