Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete
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...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/7/1/21 |
| _version_ | 1797440508083044352 |
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| author | Maria C. A. Feitosa Sílvio R. M. Ferreira João M. P. Q. Delgado Fernando A. N. Silva Joaquim T. R. Oliveira Pedro E. S. Oliveira António C. Azevedo |
| author_facet | Maria C. A. Feitosa Sílvio R. M. Ferreira João M. P. Q. Delgado Fernando A. N. Silva Joaquim T. R. Oliveira Pedro E. S. Oliveira António C. Azevedo |
| author_sort | Maria C. A. Feitosa |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T12:09:11Z |
| format | Article |
| id | doaj.art-f2b24bdeb60b450582fddc9b54642a0a |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T12:09:11Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-f2b24bdeb60b450582fddc9b54642a0a2023-11-30T22:54:22ZengMDPI AGJournal of Composites Science2504-477X2023-01-01712110.3390/jcs7010021Use of Sewage Sludge for the Substitution of Fine Aggregates for ConcreteMaria C. A. Feitosa0Sílvio R. M. Ferreira1João M. P. Q. Delgado2Fernando A. N. Silva3Joaquim T. R. Oliveira4Pedro E. S. Oliveira5António C. Azevedo6UNICAP, Rua do Príncipe, 526. Boa Vista, Recife 50050-900, PE, BrazilUNICAP, Rua do Príncipe, 526. Boa Vista, Recife 50050-900, PE, BrazilCONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, PortugalUNICAP, Rua do Príncipe, 526. Boa Vista, Recife 50050-900, PE, BrazilUNICAP, Rua do Príncipe, 526. Boa Vista, Recife 50050-900, PE, BrazilUNICAP, Rua do Príncipe, 526. Boa Vista, Recife 50050-900, PE, BrazilCONSTRUCT-LFC, Departamento de Engenharia Civil, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, PortugalThis 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.https://www.mdpi.com/2504-477X/7/1/21sewage sludgeconcretefine aggregate replacementcivil construction industry |
| spellingShingle | Maria C. A. Feitosa Sílvio R. M. Ferreira João M. P. Q. Delgado Fernando A. N. Silva Joaquim T. R. Oliveira Pedro E. S. Oliveira António C. Azevedo Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete Journal of Composites Science sewage sludge concrete fine aggregate replacement civil construction industry |
| title | Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete |
| title_full | Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete |
| title_fullStr | Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete |
| title_full_unstemmed | Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete |
| title_short | Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete |
| title_sort | use of sewage sludge for the substitution of fine aggregates for concrete |
| topic | sewage sludge concrete fine aggregate replacement civil construction industry |
| url | https://www.mdpi.com/2504-477X/7/1/21 |
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