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The composite panel test were made of gypsum, pumice powder, and glue with composition of 1:2:1/2 and coconut fiber with volume fraction variation of 10%, 15%, 20%, 25%, and 30% by using Hand lay-up technique. The sound absorption panel was tested fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf0be44b4074abba70497414a96b6092
