Sand And Substitutes For Sand - ChestofBooks
Sand is known as "argillaceous," "siliceous," or "calcareous;' according to its composition.. It is procured from pits, shores of rivers, sea-shores, or by grinding sandstones.. It is chiefly used for mortar concrete and plaster.The qualities it should possess for those purposes are pointed out at page 198.. Pit Sand has an angular grain, and a porous, rough surface, which makes it good