Uso de compósitos (poliéster/tecido de juta) para construção de silos cilíndricos verticais.

Abstract

This work is concerned with the feasibility of using a polymeric composite (polyester resin reinforced with jute fabric) as a structural material for the construction of vertical cylindrical silos. Tubular and plane composites were made, and the following parameters were used to evaluate them: effect of pre-drying of the fibers and of insertion in Portland cement on the mechanical properties (plane samples), and impact resistance, compressive strength, and hydrostatic pressure (tubular samples). Results show that pre-drying of jute fabric has a major effect on the mechanical properties of plane composites, whereas insertion in cement has a negligible effect. Mechanical property measurements on tubular samples were used to estimate pressure and stresses on silo walls. Computations for 2 and 3-m diameter, and 3; 6 and 9-m high silos are presented. Theoretical and experimental results show that polyesterjute fabric composite is a suitable material for the construction of vertical cylindrical silos for the storage o aggressive materials.