The sanding of cement floors is a serious problem in construction. It will lead to a lot of flying dust in the air. The sweeping of the ground is not clean, even more sweeping, affecting the appearance and seriously affecting the normal use of the ground. Next, Xiao Bian tells everyone about the cause of cement floor sanding and how to do it.
Sanding reason on the cement floor
1. Water is more than gray: When the concrete is mixed, the amount of water is too much, which leads to bleeding on the concrete surface and reduces the surface strength of the concrete.
2. Excessive vibration in the construction process: increase the bleeding of the concrete surface, resulting in low surface strength of the concrete.
3. Improper conservation: There is no timely maintenance. Under the sun's exposure, the surface of the concrete is greatly dehydrated and its strength is low.
How to do cement floor dust
1, if the overall strength of the ground is not good
Need to re-skill the laying of the quality of the mud surface, product design, raw materials, construction process and post-conservation aspects of strict control.
2, if only a few millimeters of surface cement mortar or concrete strength is not enough
The grinding machine can be used to sand the concrete surface, and the sand and loose parts of the ground are thoroughly ground until the hard floor is exposed and the epoxy floor paint is applied.
3. For the above two cases, the concrete hardening agent H800 can be used to harden the surface to improve the surface density and wear resistance, and the effect is long-lasting.
Cement floor maintenance
1, maintenance methods
For mechanically laid concrete surfaces, moisturizing coverage can be applied with spray test curing agents.
2, cover maintenance
It is possible to protect the ground from watering by coverings such as moisturizing membranes, sacks, and straw bags to ensure that the concrete surface is always in a moist state.
3, curing time
For less than 85% of the design compressive strength, special attention should be paid to moisturizing for the first 10 days. The general maintenance time is about 10-20 days, and the minimum is 15 days for hot weather.
Editor's summary: The reason why the cement floor started sanding and how to do it from the cement floor is introduced here. I hope to help everyone. If you want to know more about yourself, you can follow the information on this site.
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