Analysis of Artificial Sand and Natural Sand

Sand is widely used in highway construction, concrete making, etc. As the field of industry application gradually expanded, the gradual application of natural sand work more and failed to keep pace with the various sectors of modern world development needs. For the most part, machine-made sand is produced to meet the great needs. Here you can learn more about definition of machine-made sand and its wide applications.
According to the definition of machine-made sand, sand is kind of rock particles with diameter less than 4.75mm after removing dirt, crushed and screened while soft rock and weathered rock are not included. Sand specifications: according to fineness modulus (Mx), sand specification is divided into coarse, medium and thin. And among this, fineness modulus of coarse sand is 3.7-3.1, and the medium sand is 3.3-3.0, and the thin sand¡¯s fineness modulus is 2.2-1.6.
Large number of applications in building construction is imperative sand: sand is composed of the main material of concrete, with the construction industry and the importance of construction quality, building the number of sand growing market, increasing quality requirements high, and qualified, but less natural sand resources, which lead to the engineering quality, destruction of farmland, water resources are becoming increasingly serious, sand production is also due to changed in resources, construction quality and quantity of sand construction market is becoming more apparent. Recognition of the status of sand and qualified to regulate the use of building materials is imperative.
Large number of applications in building construction is imperative sand: sand is composed of the main material of concrete, with the construction industry and the importance of construction quality, building the number of sand growing market, increasing quality requirements high, and qualified, but less natural sand resources, which lead to the engineering quality, destruction of farmland, water resources are becoming increasingly serious, sand production is also due to changed in resources, construction quality and quantity of sand construction market is becoming more apparent. Recognition of the status of sand and qualified to regulate the use of building materials is imperative.
Of sand used in the construction of 60 years from the 20th century has started, the river sand, river sand, the use of natural sand is still relatively common, the State Construction Commission in 1973 was held in Guizhou Province in the sand in the concrete application of the argument will be, by building materials and construction industry exchange of experience, certainly the research results, and developed a 'Technical Specification for concrete sand.' Since then, the mechanism to expand the scope of application of sand from the construction industry expanded to highways, railways, water, electricity, metallurgy and other systems, the project expanded to block retaining bridges, tunnels and hydraulic engineering, from development to ordinary concrete mortar, steel concrete, prestressed concrete, pumping concrete, sprayed concrete and air tightness anchor works. However, standards and technical specifications of the pilot and test materials, the imperfections of the lag, the natural sand of the construction industry there is a strong dependence of many important structures in the sand on the use of constraints still exist. Mostly sand with natural sand supply, or in the economic comparison are significant differences between the programs when the last resort.

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