Mix together the dry ingredients: two quarts perlite, two quarts peat moss and two quarts Portland cement. The dry Portland cement and peat moss tend to clump and become difficult to break down ...

The composition of Portland cement is argillocalcareous ; that is, it is formed of clay and limestone, generally containing some silica, the properties of which may vary without injury to the ...

4. Convert Lime into Clinker. How it works: Lime is burned at up to 1,450 degrees C in a kiln rotating three to five times per minute. This process sinters (fuses) the lime into Portland cement ...