METHOD OF COMPLEX REINFORCEMENT OF CONCRETE BY NONMETALLIC FIBER Russian patent published in 1999 - IPC

FIELD: building materials; manufacture of thin-walled elements. SUBSTANCE: lengths of nonmetallic fiber (up to 4% by volume) are introduced into cement-sand-water mixture in process of mixing. Part of prepared fiber-concrete mixture is placed in mould and vibrated. Mixture spreads under effect of thixotropy in layer of 2-3 mm thick. Then glass roving preliminarily impregnated with cement grout modified with additives is placed on under layer. This done, mould is filled with fiber-concrete mixture up to the top and vibrated again. EFFECT: production material of low specific amount of metal and high strength. 1 dwg