Demolition agent for brittle materials

Details Demolition agent for brittle materials Demolition agent for brittle materials

B - Operations, Transporting

02

C

261/79

B02C 19/00 (2006.01) C04B 7/00 (2006.01) C04B 41/00 (2006.01) C09K 8/66 (2006.01) C09K 8/84 (2006.01) E04G 23/08 (2006.01) E21B 43/26 (2006.01) E21C 37/00 (2006.01)

Patent

CA 1136652

ABSTRACT OF THE DISCLOSURE The present demolition agent for brittle materials is prepared by pulverizing a clinker which is obtained by mixing a calcareous material, a siliceous material and gypsum at the molar ratio of CaO/SiO2 = 5.0 - 14.4 and CaSO4/SiO2 = 0.13 - 1.19 and burning the mixture under an oxidizing atmosphere to 1350 - 1550 °C. The main components of the clinker thus obtained consist of 24 - 65 % by weight of 3CaO.SiO2 crystals, 30 - 60 % by weight of CaO crystalline particles and ? - 17 % by weight of CaSO4, wherein more than 50% by weight of said CaO crystalline particles is included in the large 3CaO.S1O2 crystals grown. The present demolition agent is used to break brittle materials by means of the expansive stress of aqueous slurry of the demolition agent poured into the hole of the brittle materials.

348072

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