What is the difference between machine-made sand and natural sand?
Time:2024-08-02 Back to list
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Machine-made sand refers to sand processed by sand making machine 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.
The machine-made sand production line is composed of equipment such as 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.
Comparison between machine-made sand and natural sand:
1. Firmness and durability test. The firmness of machine-made sand is slightly worse than that of river sand, but it still meets the *ior product index of GB/T141684293 standard, and there is no problem in using it in ordinary concrete. However, when used in concrete components that are often subjected to friction and impact, in addition to the admixture, the lime-sand ratio of concrete and the crushing index and stone powder content of sand should also be controlled.
2. The influence of machine-made sand and stone powder content on the * of cement mixture. Through cement tests, mortar tests, and concrete tests, there is no big difference between using machine-made sand to prepare concrete and natural sand. Generally speaking, under the premise of the same slump, the water consumption of machine-made sand is slightly larger, but it should be considered according to construction conditions, structures, and transportation factors. However, the strength of concrete remains basically unchanged; when using machine-made sand to prepare special concrete such as pumped concrete, pay attention to the sand ratio should not be too high to prevent the reduction of engineering quality such as concrete strength and durability. In the process of engineering construction, sand and gravel are important components of concrete structural materials, and their quality has a decisive impact on the quality and durability of the entire project. Under the premise of meeting the * indicators of sand, an economically feasible solution is selected, which should not only meet the construction quality requirements, but also effectively control the production cost. In this way, in areas where natural sand resources are scarce, it is not only feasible to use an effective impact crusher or impact crusher to manufacture high-quality machine-made sand for concrete construction production, but also its * benefits are significant. At the same time, in the use of machine-made sand, research and experiments in the discipline of building materials can also be carried out to accumulate experience and lay the foundation for the development of the discipline.
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