C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 16/06 (2006.01) B28C 5/40 (2006.01) C04B 20/00 (2006.01) C04B 40/00 (2006.01) E04C 5/07 (2006.01)
Patent
CA 2403645
The invention relates to fiber compositions that can be pumped and metered in the fashion of fluid chemical admixtures into a concrete mix, thereby enabling the fibers to be dispensed by concrete ready-mix plant operators who can provide verification of fiber administration and dosage. The fibers, particularly plastic shrinkage control fibers having large cumulative surface area, are suspended in an aqueous or non-aqueous medium such that their surface area is already wetted out, thereby virtually assuring that substantial uniform fiber dispersion can be achieved without clumping and the delay that is usually required by fiber intermixing.
Compositions fibreuses qui peuvent être pompées et mesurées de la même façon que les adjuvants chimiques fluides dans un mélange de béton, permettant ainsi aux fibres d'être ajoutées par des opérateurs d'usine de béton préparé qui peuvent vérifier l'incorporation et le dosage des fibres. Les fibres, qui consistent plus précisément en des fibres plastiques dotées d'une vaste surface cumulative et résistant au rétrécissement, sont suspendues dans un milieu aqueux ou non de manière à ce que leur surface soit déjà mouillée, permettant ainsi de garantir la dispersion uniforme des fibres sans agglutination et sans le délai généralement requis pour le mélange des fibres.
Agresti David
Buchanan Michael J.
Fierke Randall
Indge Donald
Macklin Michael B.
Smart & Biggar
W.r. Grace & Co. -Conn.
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