The sand washing machine can clean the dirt and debris in the sand and gravel. Its novel sealing structure, adjustable overflow weir plate and reliable transmission ensure the effect of washing and dewatering. It is widely used in the washing, grading and impurity removal of roads, hydropower, construction and other industries, as well as the washing of fine-grained and coarse-grained materials. It is especially suitable for sandstone for construction and road construction.
Spiral sand washing machine performance characteristics:
The spiral sand washing machine has reasonable structure, convenient maintenance, large processing capacity, small power consumption and high washing degree. The novel sealing structure, fully enclosed oil bath transmission and adjustable overflow slab ensure the high efficiency, durability, cleaning and dewatering effect of the series, and the stability of the fine grain products.
The role of sand in concrete
1. The role of sand in concrete
a, reduce costs: sand is very, cement is much more expensive than sand, adding them can reduce the cost of concrete production.
b, the effect is not reduced: Use sand instead of cement, if you stir enough, then the hardness can reach the cement label.
c. Skeleton function: In the cement mortar, the sand acts as a skeleton.
2. In the construction project, the first is the foundation and the wall masonry, which is used as the binder of the block masonry material, such as cement stone and red brick to use cement mortar; the second is used for plastering in the room surface.
3, cement mortar in the calendar, but also often incorporate some additives such as micro-foam, waterproof powder, etc., to improve its workability and consistency. Concrete in the cement mortar is proportional to the stone and becomes concrete. The meaning of the strength of the cement mortar is the value of the overall dispersion of the compressive strength measured by the scale test method for the cubic test piece constructed and maintained by the scale method at 28 days.
4. The sand washing machine can separate the medium sand from the sand and wash the sand. When the concrete is arranged, the medium sand should be preferred. When coarse sand is used, the sand rate should be increased and sufficient cement should be used; when fine sand is used, the sand rate should be appropriately reduced. Sand for masonry mortar should meet the technical requirements of concrete sand. Due to the thinner mortar layer, there should be a limit to the large particle size of the sand. For sand used in masonry, the large particle size should be less than one-quarter to one-fifth of the thickness of the mortar layer. For brick masonry, it is advisable to use medium sand, and the particle size should not exceed 2.5mm. Fine sand should be used for smooth plastering and jointed mortar.
The sand washing machine and stone washing machine produced by our company adopts international advanced technology to collect the actual situation of domestic sand washing industry. It has simple structure, stable performance, less material loss during sand washing process, and can meet the requirements of high-grade materials.