Who knows how much mica content in natural sand has on concrete?
The content of mica is too high, which not only affects the workability of concrete mixture, but also affects the strength and durability of concrete, and causes the expansion crack of concrete.
When the content of mica in the aggregate reaches 2%, the workability loss of concrete is almost 50%; when the content of mica reaches 10%, the slump of concrete decreases to zero.
