Process for consolidating and sealing coal and/or rock, soil...

Details Process for consolidating and sealing coal and/or rock, soil... Process for consolidating and sealing coal and/or rock, soil...

E - Fixed Constructions

21

D

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E21D 9/00 (2006.01) C04B 28/26 (2006.01) C08G 18/08 (2006.01) C08G 18/09 (2006.01) C08G 18/16 (2006.01) C08G 18/30 (2006.01) C08G 18/38 (2006.01) C09K 8/508 (2006.01) C09K 17/00 (2006.01) E21F 17/00 (2006.01)

Patent

CA 1256686

Abstract "A Process for Consolidating and Sealing Coal and/or Rock, Soil or Brick Formations in Mining, Tunnelling and Construction" The invention relates to a process for consolidating and sealing coal and/or rock, soil and brick formations in mining, tunnell- ing and construction by reacting polyisocyanates and aqueous alkali silicate solutions in the presence of a catalyst prompt- ing the trimerization of the polyisocyanate. The catalyst is used in an amount of 6.0 to 14.5 mmole per mole of NCO groups in the reaction mixture. When the reaction mixture is introduced into the coal and/or rock, soil and brick formation to be consolidated and is cured, excellent consolidation results are achieved on account of the formation of an "interpermeated network" of inorganic and organic polymer.

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