Commercial concrete and fine stone concrete

Commercial concrete and fine stone concrete are both concrete, and commercial concrete is pre-mixed by qualified concrete manufacturers, with good quality and guarantee; Fine-stone concrete is commonly known as concrete with small stone particle size used in structural engineering with thin concrete thickness and dense steel bars. It can be commercial concrete or self-mixed on site. If the city regulations require that commercial concrete must be used, it must be used in full. Non-main structural projects with limited conditions can use self-mixed concrete in part or in whole. It is the development trend of building engineering to use commercial concrete in all structural projects. Use parts such as basement waterproof protective layer, floor cushion or surface layer, outdoor aproll, steps, roof waterproof leveling layer and protective layer, and rigid roof of industrial building, with concrete strength grade not less than C2；; In the part of structural engineering with dense steel bars, the concrete strength grade is the same as that of the original structure, and additives are used to prevent the concrete strength from decreasing due to the smaller stone particle size.