Analysis of the causes of concrete sanding

Analysis of the causes of concrete sanding Analysis of the causes of concrete sanding---Construction reasons 1) Formwork reasons The joints between the formwork used in concrete projects are not tight. After the concrete is poured and vibrated, cement slurry will leak out from the gaps in the formwork. This causes the aggregate on the surface

Research shows that the main cause of sanding is concrete bleeding, which causes the water-cement ratio of the concrete surface to be too large and the hydration is relatively sufficient. The main reasons affecting concrete bleeding are raw materials, mix ratio, construction and maintenance. Raw material reasons 1) The cement strength grade is low, and