Methodology for validation of bulk density tests and comparison between the results obtained by DIN and ASTM Standards

Abstract:

Laboratory tests are of paramount importance for the analysis and physical-chemical characterization of the materials. Standardization entities usually standardize some tests in order to ensure that the methodology used guarantees a reproducibility of the experiment and a reliability of the result. However, in order to perform some laboratory-scale tests, it is necessary to use an adaptation to fit a sample amount or a non-operational parameter. The goal of this work was validate and compare two different bulk density test, following the standards ASTM E873 and DIN EN 17828, but with changes in the volume to be measure of sample and test vessel. The test vessel was made with reduced dimensions proportionately. The validation procedure was performed, at different times, by three people previously trained, with six materials of different physical characteristics. The results showed that the procedures of both standards result in approximate values in relation to the bulk density of the materials. It was also confirmed that the heterogeneity of the material and the manual procedures suggested by the standard contributed to some divergences in the results. Finally, it was concluded that a greater repetition is recommended to reduce the error due to variation of results between as measurements.


Reference:
BARROS, João Lúcio de; MOREIRA, Renata; SANTOS, Jorge Luis Dias dos; HIRAYAMA, Danilo Eiji; SOUZA, Ligia Antunes Almagro Alves de; MENDONÇA, Marcelo A.; YAMAJI, Fábio M.; MORAIS, Leandro C. de. Methodology for validation of bulk density tests and comparison between the results obtained by DIN and ASTM Standards. In: BIOMASS AND BIOENERGY CONFERENCE, 2018, Sorocaba. Proceedings… 8 p.

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