There are two treatment methods for sanding and dusting on cement floor: grinding treatment and non-grinding treatment.
Sand formation on cement floor may be caused by the uncoordinated ratio of cement, lime and water, or there may be some quality problems between cement and lime. There are two schemes to solve this problem: grinding treatment and non-grinding treatment. Polishing treatment: The materials Litek LTK-8 concrete seal curing agent and L-6 floor brightener are needed, which are divided into coarse grinding, fine grinding and polishing according to the standard construction technology of solidified floor.
non-polishing treatment: firstly, clean up the ground with sand and ash. When the ground is completely dry, mix water with Litek LTK-8 permeable sealing hardener material and spray it directly on the ground. When the material is completely dry, spray the material water again, repeat spraying the material for 2-3 times. After the ground is dry, roll-coat Litek T-7 liquid seal curing agent on the ground.
Reasons for sand and ash formation on cement floor
1. Excessive water-cement ratio
Excessive water-cement ratio will lead to increased pores on the floor, loose cement structure, which will easily lead to structural damage after being crushed by people and vehicles, and dust gravel will precipitate from the ground, leading to increased dust on the ground.
2. The design strength of the ground is not enough during construction
When in use, the ground bears more strength than the design strength, which leads to the destruction of the ground structure and dust and sand on the floor.
3. Improper ground maintenance
It is also very important to maintain the cement ground in the early stage. If it is not maintained in time or is not fully maintained, the concrete surface will lose a lot of water due to exposure or strong wind, and the surface will not be fully hydrated, which will directly affect the strength of the cement ground, resulting in a low strength of the cement ground, and the phenomenon of ash and sand will appear in the subsequent use of the floor.