With the shortage of sand and gravel aggregates and the increase in demand for construction sand, various types of sand have poured into the market. Machine-made sand is widely used in construction and other industries, but different industries have different quality requirements for machine-made sand. The well-known machine-made sand also includes ordinary sand and high-quality sand, so what is the difference between these two?
Manufactured sand refers to sand processed by sand making machines and other auxiliary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different process requirements, which can better meet daily needs. It is mainly divided into granite sand, Cobblestone sand, limestone sand, construction waste sand, etc. The machine-made sand production line is composed of vibrating feeder, jaw crusher, sand making machine, vibrating screen and belt conveyor. According to different process requirements, various types of equipment are combined to meet the different process requirements of customers.
High-quality machine-made sand: it is made by crushing and screening by crushing and sand-making equipment. Rock particles with multiple technical indicators such as shape < 8%, water content 3% to 5%.
The difference between high-quality sand making machine and ordinary sand making machine:
1. The concrete with high-quality machine-made sand has better initial slump, greater expansion, less loss over time, and superior concrete performance.
2. Due to the adoption of gradation adjustment technology, the gradation of high-quality machine-made sand is more reasonable, with less mud content and less mud block content, so the amount of concrete admixture is less.
3. The grain shape of fine machine-made sand is polyhedral, with reasonable gradation, small void ratio, low mud content, better bonding ability with cement paste, and denser concrete.
Good configuration is an important prerequisite for the completion of high-quality machine-made sand production. When selecting equipment, not only the quality of the equipment itself, but also the matching of equipment models should be paid attention to. The application technology of high-quality machine-made sand in concrete is a mature technology, which can improve the working performance of concrete, increase the compressive strength of concrete, and improve the impermeability of concrete.
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