Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate
Nowadays the environment and its natural resources face many issues, related to the depletion of natural resources beside the increase in environmental pollution resulted from uncontrolled plastic waste disposal. Therefore, it is important to find effective and feasible solutions to utilize these wa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/12/3304 |
| _version_ | 1797530142639128576 |
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| author | Fahad K. Alqahtani |
| author_facet | Fahad K. Alqahtani |
| author_sort | Fahad K. Alqahtani |
| collection | DOAJ |
| description | Nowadays the environment and its natural resources face many issues, related to the depletion of natural resources beside the increase in environmental pollution resulted from uncontrolled plastic waste disposal. Therefore, it is important to find effective and feasible solutions to utilize these wastes, such as using them to produce environmentally friendly green concrete. In this study, plastic-based green lightweight aggregates (PGLAs) containing PET plastic waste and by product additives were developed, and their subsequent physical and mechanical properties were compared with those of reference aggregates. Then, green lightweight aggregate concrete mixes (GLACs) were produced at 100% replacement of normal weight and lightweight coarse aggregate with developed PGLAs; and their fresh, hardened, microscopic and durability-related properties were compared to those of control mixes. Study results revealed that the unit weight of PGLAs were 21% to 29% less than that of normal coarse aggregate. Additionally, PGLAs had low water absorption that varied between 1.2% and 1.6%. The developed aggregates had 45% higher strength compared to that of lightweight coarse aggregate. Study results confirmed that structural green lightweight aggregate concretes (GLACs), that satisfied the dry density, compressive and splitting tensile strength requirements specified in ASTM C330, were feasibly produced. Finally, GLACs had low-to-moderate chloride penetration in accordance with ASTM C1202, thus it can be used in those areas exposed to the risk of chloride attack. |
| first_indexed | 2024-03-10T10:23:46Z |
| format | Article |
| id | doaj.art-bafb4547559641a5967796d88a580347 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T10:23:46Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-bafb4547559641a5967796d88a5803472023-11-22T00:11:16ZengMDPI AGMaterials1996-19442021-06-011412330410.3390/ma14123304Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight AggregateFahad K. Alqahtani0Department of Civil Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaNowadays the environment and its natural resources face many issues, related to the depletion of natural resources beside the increase in environmental pollution resulted from uncontrolled plastic waste disposal. Therefore, it is important to find effective and feasible solutions to utilize these wastes, such as using them to produce environmentally friendly green concrete. In this study, plastic-based green lightweight aggregates (PGLAs) containing PET plastic waste and by product additives were developed, and their subsequent physical and mechanical properties were compared with those of reference aggregates. Then, green lightweight aggregate concrete mixes (GLACs) were produced at 100% replacement of normal weight and lightweight coarse aggregate with developed PGLAs; and their fresh, hardened, microscopic and durability-related properties were compared to those of control mixes. Study results revealed that the unit weight of PGLAs were 21% to 29% less than that of normal coarse aggregate. Additionally, PGLAs had low water absorption that varied between 1.2% and 1.6%. The developed aggregates had 45% higher strength compared to that of lightweight coarse aggregate. Study results confirmed that structural green lightweight aggregate concretes (GLACs), that satisfied the dry density, compressive and splitting tensile strength requirements specified in ASTM C330, were feasibly produced. Finally, GLACs had low-to-moderate chloride penetration in accordance with ASTM C1202, thus it can be used in those areas exposed to the risk of chloride attack.https://www.mdpi.com/1996-1944/14/12/3304plastic wasteadditivesplastic-based green lightweight aggregategreen lightweight concretechloride penetration |
| spellingShingle | Fahad K. Alqahtani Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate Materials plastic waste additives plastic-based green lightweight aggregate green lightweight concrete chloride penetration |
| title | Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate |
| title_full | Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate |
| title_fullStr | Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate |
| title_full_unstemmed | Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate |
| title_short | Sustainable Green Lightweight Concrete Containing Plastic-Based Green Lightweight Aggregate |
| title_sort | sustainable green lightweight concrete containing plastic based green lightweight aggregate |
| topic | plastic waste additives plastic-based green lightweight aggregate green lightweight concrete chloride penetration |
| url | https://www.mdpi.com/1996-1944/14/12/3304 |
| work_keys_str_mv | AT fahadkalqahtani sustainablegreenlightweightconcretecontainingplasticbasedgreenlightweightaggregate |