Fibrous concrete for ground structures and other unexacting structures of housing construction and community buildings constructions

摘要

In the present invention, there is disclosed fibrous concrete formed by a filling agent, silicate cement, gauging water and composite structure-reinforcing fibers. The filling agent is represented totally by a recyclate weighing 1100 to 1800 kg per 1 me3 of the finished fibrous concrete treated to fractions with particle size in the range of 0 to 16 mm and/or 0 to 22 mm and/or 0 to 32 mm and/or 0 to 63 mm, and gauging water is present in an amount in the range of 140 to 350 kg per 1 me3 of the finished fibrous concrete. The silicate cement is present in an amount ranging from about 240 to about 350 kg per 1 me3 of the finished fibrous concrete and the composite structure-reinforcing fibers are polyethyleneterephthalate fibers having the length in the range of 1.5 to 3 times longer than the size of the maximal grain of the used recyclate with tension strength in the range of 50 to 80 MPa and in weight amounts in the range of 14 to 42 kg per 1 me3 of the finished fibrous concrete, whereby the fiber width is in the range of 0,5 to 1.5 mm.