A PROCESS FOR PRODUCING PRECAST PRESTRESSED FLOOR AND ELE MENTS USING HOLLOW CLAY BLOCKS AND CONCRETE

摘要

A process for the production of precast prestressed floor and roof elements by tensioning of the prestressing wires in a long-line or in moulds, laying and jointing of the hollow clay blocks in between the tensioned wires in the moulds, pouring concrete in the rib spaces and vibrating followed by detensioning and cutting the wires and lifting the elements off the mould, characterised in that the hollow clay blocks whose hollow faces are to come in contact with concrete are sealed off.