Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties
This research work deals with the issue of laboratory testing of commonly available recycled fine aggregates, namely concrete recyclate, mixed recyclate and brick recyclate. Their geometrical properties: granulometric composition and fine particle content, including physical properties: bulk densit...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2024-11-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10204 |
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| author | Leoš Joura Zdeněk Prošek Aleš Palička |
| author_facet | Leoš Joura Zdeněk Prošek Aleš Palička |
| author_sort | Leoš Joura |
| collection | DOAJ |
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This research work deals with the issue of laboratory testing of commonly available recycled fine aggregates, namely concrete recyclate, mixed recyclate and brick recyclate. Their geometrical properties: granulometric composition and fine particle content, including physical properties: bulk density and water absorption are investigated. The tests themselves are carried out according to available standards, which are currently mainly standards for testing natural aggregates, and it is necessary to assess the suitability of these tests for recycled aggregates as well. The results found for concrete recyclates confirm the use of these standards to obtain the properties mentioned, but the bulk density and absorption tests are inconclusive in the case of mixed and brick recyclates. Subsequently, test concrete specimens were produced in which natural fine aggregate and concrete recyclate were substituted at 33, 66 and 100 %. A series of tests were performed on the hardened concrete: bulk density, absorption, porosity and compressive strength. From the results obtained, the use of concrete recyclate in concretes with the replacement of natural fine aggregate at 33% is suitable, without a significant reduction in the observed properties.
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| format | Article |
| id | doaj-art-2c085bb31f394780aa9c7bbb36da6794 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-2c085bb31f394780aa9c7bbb36da67942025-08-20T03:28:28ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822024-11-014910.14311/APP.2024.49.0031Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete propertiesLeoš Joura0Zdeněk Prošek1Aleš Palička2Czech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague, Czech Republic; Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Třinecká 1024, 273 43 Buštěhrad, Czech RepublicCzech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague, Czech Republic This research work deals with the issue of laboratory testing of commonly available recycled fine aggregates, namely concrete recyclate, mixed recyclate and brick recyclate. Their geometrical properties: granulometric composition and fine particle content, including physical properties: bulk density and water absorption are investigated. The tests themselves are carried out according to available standards, which are currently mainly standards for testing natural aggregates, and it is necessary to assess the suitability of these tests for recycled aggregates as well. The results found for concrete recyclates confirm the use of these standards to obtain the properties mentioned, but the bulk density and absorption tests are inconclusive in the case of mixed and brick recyclates. Subsequently, test concrete specimens were produced in which natural fine aggregate and concrete recyclate were substituted at 33, 66 and 100 %. A series of tests were performed on the hardened concrete: bulk density, absorption, porosity and compressive strength. From the results obtained, the use of concrete recyclate in concretes with the replacement of natural fine aggregate at 33% is suitable, without a significant reduction in the observed properties. https://ojs.cvut.cz/ojs/index.php/APP/article/view/10204recycled fine aggregateconcrete recyclatemixed recyclatebrick recyclateutility properties |
| spellingShingle | Leoš Joura Zdeněk Prošek Aleš Palička Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties Acta Polytechnica CTU Proceedings recycled fine aggregate concrete recyclate mixed recyclate brick recyclate utility properties |
| title | Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties |
| title_full | Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties |
| title_fullStr | Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties |
| title_full_unstemmed | Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties |
| title_short | Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties |
| title_sort | laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties |
| topic | recycled fine aggregate concrete recyclate mixed recyclate brick recyclate utility properties |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10204 |
| work_keys_str_mv | AT leosjoura laboratoryverificationofthepropertiesofrecycledfineaggregatesandtheeffectofdifferentreplacementpercentagesonconcreteproperties AT zdenekprosek laboratoryverificationofthepropertiesofrecycledfineaggregatesandtheeffectofdifferentreplacementpercentagesonconcreteproperties AT alespalicka laboratoryverificationofthepropertiesofrecycledfineaggregatesandtheeffectofdifferentreplacementpercentagesonconcreteproperties |