Two-stage mixing of cement and glass fibre

Details Two-stage mixing of cement and glass fibre Two-stage mixing of cement and glass fibre

B - Operations, Transporting

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B28C 5/40 (2006.01) B01F 3/18 (2006.01) B01F 15/00 (2006.01) B28C 5/10 (2006.01) C04B 14/42 (2006.01) C04B 40/00 (2006.01)

Patent

CA 1037948

ABSTRACT OF THE DISCLOSURE Glass fibre reinforced cement composite materials are made by first preparing a cement slurry from a cement/water mix by a high shear mixing process which breaks up cement agglomerates into their primary particles, and then mixing chopped strands of glass fibre into the cement slurry by a low shear mixing process which restricts damage to the glass filaments to a minimum. Both the high shear and low shear processes may be carried out in the same impeller- type mixer using different power inputs and impeller speeds.

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