Propriedades físicas, mecânicas e de fluxo de produtos agroindustriais.

Abstract

In the calculation of structures using silos comes up, over time, new tools and methods aimed at determining the characteristics of storable products. The interaction stored product and the silo structure is of utmost importance to check loads acting on the bottom and walls, as well as product flow, with a view to preparing projects resistant to pressure from products such as security and cost of venture. The objective of the research to determine the physical, mechanical and flow of granular products (rice, beans and ground corn), with moisture contents of 10, 12 and 14% (w.b.) and powders (flour cassava and corn), with moisture contents of 10 and 12% (w.b.) for four compressive loads (5, 10, 15 and 20 kN). To determine flow properties were used methodology recommended by the British Board Materials Handling - BMHB shear cell and by direct translation (TSG 70- 140) for data acquisition, using an apparatus also used for the determination of mechanical properties. The results showed that the products have free flowing granular and cohesive powders flows easy, the K-factor experimental (Kexp) values were calculated by the following equations proposed by authors and by international standards as Poisson's ratio calculated for both loading and for unloading, showed higher values than the experimental values and increased with increasing moisture content, the modulus of elasticity for this experiment showed higher values than the calculated values and both increased compared to the increase in moisture content, for the angle of dilatancy results decreased with increasing moisture content. All curves produced by the average data of vertical stress (oy) versus vertical deformation (£y) showed, for all tests, similar to the theoretical behavior.