Reinforcing for concrete products and reinforced concrete products

Abstract

A yarn for use in a cement mortar matrix, includes a core and a multitude of staple fibers forming a layer which envelopes the core and provides an extended surface area and interstical spaces for infiltration by cement fines and hydrates. The staple fibers are spun around the core and attached to the core, and have sufficient freedom of radial movement to provide said spaces and permit ingress of cement fines and the formation of hydrates in said spaces.

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