Artificial sand is formed by crushing stones. Natural sand is formed by natural conditions (mainly rock weathering).

Second, it feels different.

Artificial sand is basically medium-coarse sand with fineness modulus of 2.6-3.6, stable and adjustable particle gradation, and contains a certain amount of stone powder. Except for 150um sieve residue, most of the other sieve residues are triangular or rectangular with rough surface and angular edges. Natural sand is washed by water and river water, so it feels very delicate.

Third, the nature is different.

The material of artificial sand is excellent and stable. Artificial sand is a hand-selected raw material with uniform and stable material, consistent mineral and chemical composition, clean sand particles, no mud and other harmful impurities, and stable performance. However, the raw material of natural sand is complex and its performance is not stable enough.

Fourth, the production process requirements are different.

A kind of artificial sand, one fineness modulus, only corresponds to one gradation. Its fineness modulus has a linear relationship with the screen allowance of a single screen. As long as the linear relationship is established and the screen allowance of a single screen is measured, the fineness modulus can be calculated accurately and quickly. However, the fineness modulus of ordinary natural sand can be graded in many ways. The fineness modulus of artificial sand can be artificially controlled through the production process, and the production can be organized according to the requirements of users, which is impossible for natural sand.

Baidu encyclopedia-natural sand

Baidu encyclopedia-artificial sand

Answered on 20 19-06-28.

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What's the difference between natural sand and artificial sand?

Rock particles with particle size less than 5 mm formed by natural conditions (mainly rock weathering). Comparison between natural sand and artificial sand: Compared with natural sand, artificial sand has the following differences and advantages: the material of artificial sand washing is excellent and stable. Manual sand washing is a manually selected raw material, which is uniform and stable. The mineral composition and chemical composition are consistent with the raw material, which is not as complicated as natural sand. The sand is clean, free of mud and other harmful impurities, and its performance is stable. A kind of artificial sand washing, one fineness modulus, only corresponding to one gradation. Its fineness modulus has a linear relationship with the screen allowance of a single screen. As long as the linear relationship is established and the screen allowance of a single screen is measured, the fineness modulus can be calculated accurately and quickly. However, the fineness modulus of ordinary natural sand can be graded in many ways. Extended data:

Sandy minerals formed under high pressure have dense particle accumulation, that is, high density and high hardness. Such as diamond (formed at 10000 atmospheric pressure). Because the pressure in the crust increases with the depth, sand minerals formed under high pressure are often deep in the crust and mantle. In addition, the directional pressure in regional metamorphism can make some flaky and columnar sand minerals dissolve in the direction parallel to the pressure and grow in the direction perpendicular to the pressure, which leads to the directional arrangement of these sand minerals in the matrix, such as biotite and quartz in gneiss, and their monomer morphology is different from that in general granite. Baidu encyclopedia-natural sand

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What's the difference between artificial sand and natural sand?

Sand equivalent is to measure the content of cohesive soil or impurities in various fine aggregates such as natural sand, artificial sand and stone chips, so as to evaluate the cleanliness of aggregates. Sand equivalent is expressed by se. Suitable for aggregate with nominal maximum particle size not exceeding 4.75㎜. The formula is: SE=h2/h 1* 100SE: sand equivalent, h 1: total height of floc and sediment in the test tube, h2: height of aggregate sediment measured by piston in the test tube. Natural sand is formed under natural conditions (mainly rock weathering), and rock particles with a particle size below 5mm are called natural sand. Artificial sand is formed by crushing stones. Natural sand is washed by water and river water, so it feels very delicate. The main characteristics of machine-made sand itself are: at present, it is basically medium-coarse sand with fineness modulus of 2.6-3.6, stable and adjustable particle gradation, and contains a certain amount of stone powder. Except for 1.50um sieve residue, most of them are triangular or rectangular, with rough surface and angular edges. However, due to the different mineral sources, equipment and technology of producing and processing machine-made sand in different parts of the country, the particle types and gradation of the produced machine-made sand may be quite different. For example, some machine-made sand has more flaky particles, and some machine-made sand particles are graded at two ends and small in the middle, but as long as they can meet all the technical indicators of artificial sand in the national standard, they can be used in concrete and mortar. Those that fail to meet the technical requirements of national artificial sand cannot be used, because the grain type and gradation of machine-made sand can be adjusted and improved. In this respect, there are essential differences between artificial sand and natural sand. The above characteristics of mixed sand decrease with the mixing ratio of machine-made sand.

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