{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,3]],"date-time":"2022-04-03T07:15:38Z","timestamp":1648970138473},"reference-count":18,"publisher":"FapUNIFESP (SciELO)","issue":"316","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cer\u00e2mica"],"published-print":{"date-parts":[[2004,12]]},"abstract":"<jats:p>Fatores como a distribui\u00e7\u00e3o granulom\u00e9trica e a morfologia condicionam as propriedades f\u00edsicas de sistemas particulados (e.g. misturas de p\u00f3s, pastas, concretos refrat\u00e1rios), entre as quais a densidade de empacotamento. Podem ser encontrados, na literatura, v\u00e1rios modelos para a otimiza\u00e7\u00e3o da distribui\u00e7\u00e3o de tamanhos de part\u00edculas que maximiza o empacotamento, todos desenvolvidos para sistemas de esferas perfeitas (e.g. Furnas, Andreasen, Alfred). Neste trabalho, p\u00f3s de alumina comercial (reativa e tabular) foram separados em nove fra\u00e7\u00f5es granulom\u00e9tricas e, recorrendo a dois procedimentos distintos, constru\u00edram-se seis sistemas tern\u00e1rios diferentes e complementares de tamanhos de part\u00edculas. Usando a metodologia das superf\u00edcies de resposta e t\u00e9cnicas de an\u00e1lise estat\u00edstica afins (programa de c\u00e1lculo Statistica) obteve-se, em ambos os casos, a distribui\u00e7\u00e3o granulom\u00e9trica que maximiza a densidade de empacotamento. Por compara\u00e7\u00e3o com as distribui\u00e7\u00f5es granulom\u00e9tricas te\u00f3ricas, ficou demonstrada a validade do modelo te\u00f3rico de Alfred para esferas perfeitas. Os resultados obtidos demonstram, assim, que o efeito prejudicial da n\u00e3o esfericidade das part\u00edculas pode ser, na realidade, compensado pela otimiza\u00e7\u00e3o da distribui\u00e7\u00e3o granulom\u00e9trica global.<\/jats:p>","DOI":"10.1590\/s0366-69132004000400010","type":"journal-article","created":{"date-parts":[[2005,4,20]],"date-time":"2005-04-20T13:01:12Z","timestamp":1114002072000},"page":"345-354","source":"Crossref","is-referenced-by-count":10,"title":["Aplica\u00e7\u00e3o de m\u00e9todos estat\u00edsticos na otimiza\u00e7\u00e3o da densidade de empacotamento de distribui\u00e7\u00f5es de p\u00f3s de alumina"],"prefix":"10.1590","volume":"50","author":[{"given":"A. P.","family":"Silva","sequence":"first","affiliation":[{"name":"Universidade Beira Interior,  Portugal"}]},{"given":"A. M.","family":"Segad\u00e3es","sequence":"additional","affiliation":[{"name":"Univ. Aveiro,  Portugal"}]},{"given":"T. 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