Process and apparatus for continuously prestressing concrete products

摘要

An apparatus for prestressing reinforcing tendons in concrete products comprising means for supplying continuous tendons over an elongated mould bed. Primary anchoring means grip and stress the tendons while permitting placement of one of a series of moulds. Secondary anchoring means are fixed to means for advancing the moulds along the bed to permit transferring of the grip on the tendons between the primary and secondary anchoring means or vice versa to maintain the prestressing force.