cements, plasters



cements, plasters defined in 1909 year

cements, plasters - Cements, Plasters;
cements, plasters -
  1. Plaster-of-Paris, baked and ground, acquires great hardness and solidity when left for 24 hours, in contact with a solution of alum, and when, after drying in the air, it is submitted to a second baking.
  2. Still better results are obtained by employing an aqueous solution containing 1/20 of borate and 1/20 of cream of tartar; the plaster, baked and in fragments, is plunged into this solution until it is saturated; then it is calcined, and pulverised.
  3. A mixture of silicate of potash, 100 parts; carbonate of potash, 27 parts; and water, 500 parts, may also be used.


near cements, plasters in Knolik


cements, plaster castshome
letter "C"
start from "CE"
cements, plumbers

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