Effect of parent concrete strength on recycled concrete performance
The reuse of concrete waste as a secondary aggregate could be an efficient solution for sustainable development and long-term environmental protection. However, the variable quality of waste concrete, especially with various compressive strengths, can have a negative effect on the final compressive...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2022-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://3.64.71.86/index.php/fis/article/view/3579 |
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| _version_ | 1832544335799779328 |
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| author | Bachir Kebaili Mohammed Benzerara Souad Menadi Nadia Kouider Redjem Belouettar |
| author_facet | Bachir Kebaili Mohammed Benzerara Souad Menadi Nadia Kouider Redjem Belouettar |
| author_sort | Bachir Kebaili |
| collection | DOAJ |
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The reuse of concrete waste as a secondary aggregate could be an efficient solution for sustainable development and long-term environmental protection. However, the variable quality of waste concrete, especially with various compressive strengths, can have a negative effect on the final compressive strength of recycled concrete. In this approach, the major goal of this research is to study the effect of parent concrete qualities on the performance of recycled concrete. To accomplish this task, three grades of different compressive strengths (10 to 15) MPa, (20 to 25) MPa, and (30 to 40) MPa have been analyzed in an experimental test program, in which an unknown compressive strength is introduced as well. The experimental mix use 40% of secondary aggregates (both course and fine) and 60% of natural aggregates. This led to the decreasing of the compressive strength of the test concrete between 14% and 23.7% compared to the normal concrete. This loss was improved by adding an amount of cement equivalent to 4% of the weight of the recycled aggregate used. The achieved results prove that the strength properties of the parent concrete have a limited effect on the compressive strength of the recycled concrete. Additionally, low compressive strength parent concrete, when crushed, generates a high amount of fine aggregate and large percentage of recycled coarse aggregates with less attached mortar, and presents the same compressive strength as an excellent parent concrete.
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| format | Article |
| id | doaj-art-51b18ac274014b1d83b2160a54359171 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-51b18ac274014b1d83b2160a543591712025-02-03T10:34:52ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-09-011662Effect of parent concrete strength on recycled concrete performanceBachir Kebaili0Mohammed Benzerara1Souad Menadi2Nadia Kouider3Redjem Belouettar4Civil Engineering Laboratory (LGC), Badji Mokhtar- Annaba University, P. O. Box 12, 23000 Annaba, Algeria Civil Engineering Laboratory (LGC), Badji Mokhtar- Annaba University, P. O. Box 12, 23000 Annaba, Algeria & Materials, Geomaterials and Environment Laboratory (LMGE), Department of Civil Engineering, Badji Mokhtar- Annaba University, P. O. Box 12, 23000 Annaba, Algeria Civil Engineering Laboratory (LGC), Badji Mokhtar- Annaba University, P. O. Box 12, 23000 Annaba, AlgeriaCivil Engineering Laboratory (LGC), Badji Mokhtar- Annaba University, P. O. Box 12, 23000 Annaba, AlgeriaCivil Engineering Laboratory (LGC), Badji Mokhtar- Annaba University, P. O. Box 12, 23000 Annaba, Algeria The reuse of concrete waste as a secondary aggregate could be an efficient solution for sustainable development and long-term environmental protection. However, the variable quality of waste concrete, especially with various compressive strengths, can have a negative effect on the final compressive strength of recycled concrete. In this approach, the major goal of this research is to study the effect of parent concrete qualities on the performance of recycled concrete. To accomplish this task, three grades of different compressive strengths (10 to 15) MPa, (20 to 25) MPa, and (30 to 40) MPa have been analyzed in an experimental test program, in which an unknown compressive strength is introduced as well. The experimental mix use 40% of secondary aggregates (both course and fine) and 60% of natural aggregates. This led to the decreasing of the compressive strength of the test concrete between 14% and 23.7% compared to the normal concrete. This loss was improved by adding an amount of cement equivalent to 4% of the weight of the recycled aggregate used. The achieved results prove that the strength properties of the parent concrete have a limited effect on the compressive strength of the recycled concrete. Additionally, low compressive strength parent concrete, when crushed, generates a high amount of fine aggregate and large percentage of recycled coarse aggregates with less attached mortar, and presents the same compressive strength as an excellent parent concrete. https://3.64.71.86/index.php/fis/article/view/3579Recycled concreteWaste recoveryEnvironmentAggregatesMechanical behavior |
| spellingShingle | Bachir Kebaili Mohammed Benzerara Souad Menadi Nadia Kouider Redjem Belouettar Effect of parent concrete strength on recycled concrete performance Fracture and Structural Integrity Recycled concrete Waste recovery Environment Aggregates Mechanical behavior |
| title | Effect of parent concrete strength on recycled concrete performance |
| title_full | Effect of parent concrete strength on recycled concrete performance |
| title_fullStr | Effect of parent concrete strength on recycled concrete performance |
| title_full_unstemmed | Effect of parent concrete strength on recycled concrete performance |
| title_short | Effect of parent concrete strength on recycled concrete performance |
| title_sort | effect of parent concrete strength on recycled concrete performance |
| topic | Recycled concrete Waste recovery Environment Aggregates Mechanical behavior |
| url | https://3.64.71.86/index.php/fis/article/view/3579 |
| work_keys_str_mv | AT bachirkebaili effectofparentconcretestrengthonrecycledconcreteperformance AT mohammedbenzerara effectofparentconcretestrengthonrecycledconcreteperformance AT souadmenadi effectofparentconcretestrengthonrecycledconcreteperformance AT nadiakouider effectofparentconcretestrengthonrecycledconcreteperformance AT redjembelouettar effectofparentconcretestrengthonrecycledconcreteperformance |