{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T05:04:44Z","timestamp":1773291884429,"version":"3.50.1"},"reference-count":37,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,1,10]],"date-time":"2023-01-10T00:00:00Z","timestamp":1673308800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Base Funding","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"Base Funding","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"Base Funding","award":["2020.00828.CEECIND"],"award-info":[{"award-number":["2020.00828.CEECIND"]}]},{"name":"Programmatic Funding","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"Programmatic Funding","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"Programmatic Funding","award":["2020.00828.CEECIND"],"award-info":[{"award-number":["2020.00828.CEECIND"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["2020.00828.CEECIND"],"award-info":[{"award-number":["2020.00828.CEECIND"]}]},{"name":"individual Scientific Employment Stimulus","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"individual Scientific Employment Stimulus","award":["UIDB\/04708\/2020"],"award-info":[{"award-number":["UIDB\/04708\/2020"]}]},{"name":"individual Scientific Employment Stimulus","award":["2020.00828.CEECIND"],"award-info":[{"award-number":["2020.00828.CEECIND"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Compos. Sci."],"abstract":"<jats:p>This work analyzes the use of sewage sludge, generated in wastewater treatment plants, as an alternative for small aggregate to be used in concrete. Concrete cylindrical specimens with height h = 20 cm and diameter D = 10 cm were prepared using different amounts of sludge in the substitution of fine aggregates. Portland cement (CP II Z 32 RS cement) was used in all concrete mixtures, and two water-cement ratios and four cement-sludge mixtures were investigated. Compressive strength, sclerometer index, ultrasonic wave transmission velocity, and water absorption capillary tests were performed. The results showed that the use of sewage sludge as a replacement for fine aggregate to produce concrete exhibited a positive effect on both its compressive strength and its capillary water absorption. The results, even preliminary ones, demonstrated that the sludge could be used as an effective replacement for fine aggregate to produce concrete. The replacement of fine aggregate with 5% sewage sludge proved to be the optimal replacement value for the type of sewage sludge investigated.<\/jats:p>","DOI":"10.3390\/jcs7010021","type":"journal-article","created":{"date-parts":[[2023,1,10]],"date-time":"2023-01-10T01:30:47Z","timestamp":1673314247000},"page":"21","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete"],"prefix":"10.3390","volume":"7","author":[{"given":"Maria C. A.","family":"Feitosa","sequence":"first","affiliation":[{"name":"UNICAP, Rua do Pr\u00edncipe, 526. Boa Vista, Recife 50050-900, PE, Brazil"}]},{"given":"S\u00edlvio R. M.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"UNICAP, Rua do Pr\u00edncipe, 526. Boa Vista, Recife 50050-900, PE, Brazil"},{"name":"UFPE, Departamento de Engenharia Civil, Av. Acad\u00eamico H\u00e9lio Ramos, s\/n. Cidade Universit\u00e1ria, Recife 50740-530, PE, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1026-4523","authenticated-orcid":false,"given":"Jo\u00e3o M. P. Q.","family":"Delgado","sequence":"additional","affiliation":[{"name":"CONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, s\/n, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4471-4294","authenticated-orcid":false,"given":"Fernando A. N.","family":"Silva","sequence":"additional","affiliation":[{"name":"UNICAP, Rua do Pr\u00edncipe, 526. Boa Vista, Recife 50050-900, PE, Brazil"}]},{"given":"Joaquim T. R.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"UNICAP, Rua do Pr\u00edncipe, 526. Boa Vista, Recife 50050-900, PE, Brazil"}]},{"given":"Pedro E. S.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"UNICAP, Rua do Pr\u00edncipe, 526. Boa Vista, Recife 50050-900, PE, Brazil"},{"name":"UFPE, Departamento de Engenharia Civil, Av. Acad\u00eamico H\u00e9lio Ramos, s\/n. Cidade Universit\u00e1ria, Recife 50740-530, PE, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4530-9880","authenticated-orcid":false,"given":"Ant\u00f3nio C.","family":"Azevedo","sequence":"additional","affiliation":[{"name":"CONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, s\/n, 4200-465 Porto, Portugal"},{"name":"Instituto Federal de Ci\u00eancias de Educa\u00e7\u00e3o e Tecnologia de Pernambuco (IFPE), Recife 50670-430, PE, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"453","DOI":"10.2166\/wst.2015.521","article-title":"Overview of legislation on sewage sludge management in developed countries worldwide","volume":"73","author":"Christodoulou","year":"2016","journal-title":"Water Sci. 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[5th ed.]."}],"container-title":["Journal of Composites Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2504-477X\/7\/1\/21\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:05:09Z","timestamp":1760119509000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2504-477X\/7\/1\/21"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,10]]},"references-count":37,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2023,1]]}},"alternative-id":["jcs7010021"],"URL":"https:\/\/doi.org\/10.3390\/jcs7010021","relation":{},"ISSN":["2504-477X"],"issn-type":[{"value":"2504-477X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,1,10]]}}}