Chalk natural lump for food

Chalk natural lump for food Many people are happy to order natural chalk to eat and choose only high-quality product. What is special about this limestone? Why is it important to take it? Why use it? The absence in the body of a trigger element can decrease the amount of iron, anemia. With a shortage…

PROPERTIES AND APPLICATION OF CHALK

Chalk relates to hard floor rock. His strength depends on humidity. Temporary compression resistance in the air-dry state ranges from 1000 to 4500. Dry chalk has a modulus of 3000 MPa (for loose chalk) to 10,000 MPa (for tight) and behaves as an elastic body. The angle of internal friction is chalk, clutch under hydrostatic compression…