Date: Feb. 11, 2022
Inferior machine-made sand has a significant impact on infrastructure safety, which we, as industry leaders, should try to avoid. So how to judge which are inferior machine-made sand?
We may often come across the production of manufactured sand from weathered rock. Although this type of sand can be used normally, it is not suitable for construction sand. Weathered sand generally refers to the natural crushing under natural conditions such as solar radiation, atmosphere, water, and organisms. This kind of weathered sand is relatively poor in firmness, requires a large amount of water, and has poor adhesion, so it is not suitable for the production of concrete.
Clay minerals mainly refer to some silicate minerals mainly containing aluminum and magnesium. The manufactured sand produced from this mineral is generally a layered structure with water absorption and ion exchange properties.
We judge the quality of machine-made sand mainly from the perspective of whether it is suitable for concrete production and use. If the minerals used to process manufactured sand contain ingredients such as organic matter, shale, gypsum, coal, mica, etc. that affect the strength and durability of concrete, it is not suitable for the production of manufactured sand.
Some minerals will cover a thicker soil layer during the production process, and the rock will not be a whole piece. Such ores are suitable for water stabilization. Even if wet sand is used, the soil content in it will still exceed the standard. A large amount of soil will greatly reduce the workability of concrete and affect the strength of concrete.
These four types of minerals are not suitable for the production of machine-made sand, or these four types of machine-made sand belong to inferior machine-made sand. We should pay extra attention to this in the use or production process. Although it is difficult to find good stones, we cannot take them lightly.
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