Data/hora: 02/06/2024 14:24:19

Provedor de dados: | 90
País: | Brazil
Título: | Experimental Method to Determine Some Physical Properties in Physics Classes
Autores: | Pires,Luiz Fernando; Brinatti,André Maurício; Saab,Sérgio da Costa.
Data: | 2015-10-01
Ano: | 2015
Palavras-chave: | Particle density; Porous medium density; Gravimetric water content; Volumetric water content.
Resumo: | ABSTRACT Particle density, gravimetric and volumetric water contents and porosity are important basic concepts to characterize porous systems such as soils. This paper presents a proposal of an experimental method to measure these physical properties, applicable in experimental physics classes, in porous media samples consisting of spheres with the same diameter (monodisperse medium) and with different diameters (polydisperse medium). Soil samples are not used given the difficulty of working with this porous medium in laboratories dedicated to teaching basic experimental physics. The paper describes the method to be followed and results of two case studies, one in monodisperse medium and the other in polydisperse medium. The particle density results were very close to theoretical values for lead spheres, whose relative deviation (RD) was -2.9 % and +0.1 % RD for the iron spheres. The RD of porosity was also low: -3.6 % for lead spheres and -1.2 % for iron spheres, in the comparison of procedures – using particle and porous medium densities and saturated volumetric water content – and monodisperse and polydisperse media.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501507
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/01000683rbcs20140766
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.39 n.5 2015
Fonte: | info:eu-repo/semantics/openAccess