A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete
Most metropolitan areas in the world are facing major solid-waste-disposal problems. The solid-waste problem is considered one of the major environmental problems that countries and environmental organizations are paying increasing attention to at present, not only due to its negative effects on pub...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/7/3/129 |
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| author | Ashraf A. M. Fadiel Nuria S. Mohammed Taher Abu-Lebdeh Iulian Sorin Munteanu Elisabeta Niculae Florian Ion Tiberiu Petrescu |
| author_facet | Ashraf A. M. Fadiel Nuria S. Mohammed Taher Abu-Lebdeh Iulian Sorin Munteanu Elisabeta Niculae Florian Ion Tiberiu Petrescu |
| author_sort | Ashraf A. M. Fadiel |
| collection | DOAJ |
| description | Most metropolitan areas in the world are facing major solid-waste-disposal problems. The solid-waste problem is considered one of the major environmental problems that countries and environmental organizations are paying increasing attention to at present, not only due to its negative effects on public health and the environment, but also due to the dangers it may cause to the nearby residential communities. One of the visible solutions is to reuse solid waste as a partial replacement of concrete constituents. In this investigation, fine aggregate was replaced with crumb rubber at four different volumetric percentages, ranging from 5 to 20% with a 5% step size. A novel treatment technique based on a combination of chemical and thermal treatments of a crumb rubber surface was adopted. A superplasticizer was added to improve both the workability and the strength of the concrete mixtures. The mixtures were assessed in fresh and hardened phases and compared with a control mix. In the fresh phase, the mixtures were evaluated regarding workability and wet density; and in the hardened phase, compressive strength after 180 days, tensile and flexural strength after 90 days, dry density, and absorption were investigated. Additionally, the mixes were assessed using non-destructive tests, namely, the ultrasonic pulse velocity test, rebound hammer test, and core test. The results showed that the addition of rubber particles to concrete decreased the compressive strength, tensile strength, and flexural strength in comparison with control concrete. An empirical equation based on combined analysis with R<sup>2</sup> = 0.95 was derived. At the age of 180 days, the compressive strength of rubberized concrete varied from 34 to 42 MPa. From a structural point of view, its strength is regarded as acceptable. |
| first_indexed | 2024-03-11T06:21:05Z |
| format | Article |
| id | doaj.art-5a0918f4ba5a405ca30694b6fcd6f347 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-11T06:21:05Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-5a0918f4ba5a405ca30694b6fcd6f3472023-11-17T11:53:37ZengMDPI AGJournal of Composites Science2504-477X2023-03-017312910.3390/jcs7030129A Comprehensive Evaluation of the Mechanical Properties of Rubberized ConcreteAshraf A. M. Fadiel0Nuria S. Mohammed1Taher Abu-Lebdeh2Iulian Sorin Munteanu3Elisabeta Niculae4Florian Ion Tiberiu Petrescu5Department of Civil Engineering, Omar Al-Mukhtar University, El-Bieda P.O. Box 919, LibyaDepartment of Civil Engineering, Omar Al-Mukhtar University, El-Bieda P.O. Box 919, LibyaDepartment of Civil, Architectural and Environmental Engineering, North Carolina A and T State University, Greensboro, NC 27411, USA“Theory of Mechanisms and Robots” Department, University POLITEHNICA of Bucharest, Splaiul Independentei Street 313, 060042 Bucharest, Romania“Theory of Mechanisms and Robots” Department, University POLITEHNICA of Bucharest, Splaiul Independentei Street 313, 060042 Bucharest, Romania“Theory of Mechanisms and Robots” Department, University POLITEHNICA of Bucharest, Splaiul Independentei Street 313, 060042 Bucharest, RomaniaMost metropolitan areas in the world are facing major solid-waste-disposal problems. The solid-waste problem is considered one of the major environmental problems that countries and environmental organizations are paying increasing attention to at present, not only due to its negative effects on public health and the environment, but also due to the dangers it may cause to the nearby residential communities. One of the visible solutions is to reuse solid waste as a partial replacement of concrete constituents. In this investigation, fine aggregate was replaced with crumb rubber at four different volumetric percentages, ranging from 5 to 20% with a 5% step size. A novel treatment technique based on a combination of chemical and thermal treatments of a crumb rubber surface was adopted. A superplasticizer was added to improve both the workability and the strength of the concrete mixtures. The mixtures were assessed in fresh and hardened phases and compared with a control mix. In the fresh phase, the mixtures were evaluated regarding workability and wet density; and in the hardened phase, compressive strength after 180 days, tensile and flexural strength after 90 days, dry density, and absorption were investigated. Additionally, the mixes were assessed using non-destructive tests, namely, the ultrasonic pulse velocity test, rebound hammer test, and core test. The results showed that the addition of rubber particles to concrete decreased the compressive strength, tensile strength, and flexural strength in comparison with control concrete. An empirical equation based on combined analysis with R<sup>2</sup> = 0.95 was derived. At the age of 180 days, the compressive strength of rubberized concrete varied from 34 to 42 MPa. From a structural point of view, its strength is regarded as acceptable.https://www.mdpi.com/2504-477X/7/3/129rubberized concretesolid wastesmechanicals propertiesrubber treatmentnon-destructive tests |
| spellingShingle | Ashraf A. M. Fadiel Nuria S. Mohammed Taher Abu-Lebdeh Iulian Sorin Munteanu Elisabeta Niculae Florian Ion Tiberiu Petrescu A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete Journal of Composites Science rubberized concrete solid wastes mechanicals properties rubber treatment non-destructive tests |
| title | A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete |
| title_full | A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete |
| title_fullStr | A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete |
| title_full_unstemmed | A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete |
| title_short | A Comprehensive Evaluation of the Mechanical Properties of Rubberized Concrete |
| title_sort | comprehensive evaluation of the mechanical properties of rubberized concrete |
| topic | rubberized concrete solid wastes mechanicals properties rubber treatment non-destructive tests |
| url | https://www.mdpi.com/2504-477X/7/3/129 |
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