Análise comparativa do dimensionamento de filtros em material geotêxtil não tecido usando duas fontes de dados de abertura de filtração.

Abstract

For being a relatively recent technology, geotextiles (especially the non-woven models used in filtering systems) are still undergoing improvements in their design process. The currently most used methods to measure the most important information of this stage, the filtrations opening size, are still less accurate than the ideal. This work analyzed the application of the method by Christopher and Holtz (1985), in a specific case with two sources of filtration opening size data: the first one using data provided by the manufacturer obtained through less accurate measurements; and another through the Bubble Point Test (BBP), a more modern and accurate process. UnB is a reference on this topic and the master's theses by Silva (2014), Trejos Galvis (2016), Melo (2018), Moraes Filho (2018) and Dias (2019) were used as a theoretical and data source for preparation of this work, in addition to national and international books and publications on the subject. The work aimed to bring inputs to increase the viability of using the product, avoiding the elaboration of overly conservative projects. In the analysis of the results, it was observed the tendency of economy, increase of security or increase in the range of options suitable in certain scenarios from the adoption of the data provided by the Bubble Point Test, which confirmed the hypothesis that the substitution of the source is beneficial of current data for this. It was also clear that there was a need for more academic works to survey the influence of overload on other models in order to provide more basis for the analyzes.