The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete
Studies were carried out to find a relation between the important physical property, i.e., water absorption and the main mechanical parameter, i.e., compressive strength (<i>f</i><sub>cm</sub>), of concretes containing coal fly ash (CFA) in the amounts of 0% (CFA-00), 20% (CF...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/15/5218 |
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| author | Grzegorz Ludwik Golewski |
| author_facet | Grzegorz Ludwik Golewski |
| author_sort | Grzegorz Ludwik Golewski |
| collection | DOAJ |
| description | Studies were carried out to find a relation between the important physical property, i.e., water absorption and the main mechanical parameter, i.e., compressive strength (<i>f</i><sub>cm</sub>), of concretes containing coal fly ash (CFA) in the amounts of 0% (CFA-00), 20% (CFA-20%), and 30% (CFA-30). The methodology of the water absorption tests reflected the conditions prevailing in the case of reinforced concrete structures operating below the water table. The microstructure of all materials was also assessed. Based on the conducted studies, it was found that both the <i>f</i><sub>cm</sub> of concretes with the addition of CFA and its water absorption depended on the percentage of waste used, whereas both analyzed parameters were closely related to the structure of the cement matrix and interfacial transition zone area between the coarse aggregates and the paste. It should be stated that at the content of 20% CFA in the binder composition, an increase in the <i>f</i><sub>cm</sub> of the material is observed, with a simultaneous increase in its water absorption. On the other hand, the addition of 30% CFA results in a significant decrease in both the strength of the composite and its water absorption. Thus, it was found that in the case of concretes with the addition of CFA, the strength of the material is directly proportional to the level of its water absorption. Moreover, the concrete including 30% CFA may increase the durability of reinforced concrete structures subjected to immersion conditions. From an application point of view, the obtained research results may be helpful in understanding the impact of the CFA additive on the level of water absorption in cement concretes with this waste. |
| first_indexed | 2024-03-11T00:23:08Z |
| format | Article |
| id | doaj.art-1ee43e3bedb9451a951a2a5829e256b1 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T00:23:08Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1ee43e3bedb9451a951a2a5829e256b12023-11-18T23:10:23ZengMDPI AGMaterials1996-19442023-07-011615521810.3390/ma16155218The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the ConcreteGrzegorz Ludwik Golewski0Department of Structural Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40 Str, 20-618 Lublin, PolandStudies were carried out to find a relation between the important physical property, i.e., water absorption and the main mechanical parameter, i.e., compressive strength (<i>f</i><sub>cm</sub>), of concretes containing coal fly ash (CFA) in the amounts of 0% (CFA-00), 20% (CFA-20%), and 30% (CFA-30). The methodology of the water absorption tests reflected the conditions prevailing in the case of reinforced concrete structures operating below the water table. The microstructure of all materials was also assessed. Based on the conducted studies, it was found that both the <i>f</i><sub>cm</sub> of concretes with the addition of CFA and its water absorption depended on the percentage of waste used, whereas both analyzed parameters were closely related to the structure of the cement matrix and interfacial transition zone area between the coarse aggregates and the paste. It should be stated that at the content of 20% CFA in the binder composition, an increase in the <i>f</i><sub>cm</sub> of the material is observed, with a simultaneous increase in its water absorption. On the other hand, the addition of 30% CFA results in a significant decrease in both the strength of the composite and its water absorption. Thus, it was found that in the case of concretes with the addition of CFA, the strength of the material is directly proportional to the level of its water absorption. Moreover, the concrete including 30% CFA may increase the durability of reinforced concrete structures subjected to immersion conditions. From an application point of view, the obtained research results may be helpful in understanding the impact of the CFA additive on the level of water absorption in cement concretes with this waste.https://www.mdpi.com/1996-1944/16/15/5218coal fly ashconcrete compositecement matrixwater absorption of concretecompressive strengthimmersion conditions |
| spellingShingle | Grzegorz Ludwik Golewski The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete Materials coal fly ash concrete composite cement matrix water absorption of concrete compressive strength immersion conditions |
| title | The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete |
| title_full | The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete |
| title_fullStr | The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete |
| title_full_unstemmed | The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete |
| title_short | The Effect of the Addition of Coal Fly Ash (CFA) on the Control of Water Movement within the Structure of the Concrete |
| title_sort | effect of the addition of coal fly ash cfa on the control of water movement within the structure of the concrete |
| topic | coal fly ash concrete composite cement matrix water absorption of concrete compressive strength immersion conditions |
| url | https://www.mdpi.com/1996-1944/16/15/5218 |
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