Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder
<b> </b>According to the European Standards (EN 450-1, EN 206), it is not permissible to use calcareous fly ash as an additive to concrete. However, other standards (for example, the American and Canadian ones) allow the use of high-calcium fly ash (type C) in concrete. As a result of br...
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MDPI AG
2019-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/12/17/2665 |
| _version_ | 1811265726267260928 |
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| author | Piotr Woyciechowski Paweł Woliński Grzegorz Adamczewski |
| author_facet | Piotr Woyciechowski Paweł Woliński Grzegorz Adamczewski |
| author_sort | Piotr Woyciechowski |
| collection | DOAJ |
| description | <b> </b>According to the European Standards (EN 450-1, EN 206), it is not permissible to use calcareous fly ash as an additive to concrete. However, other standards (for example, the American and Canadian ones) allow the use of high-calcium fly ash (type C) in concrete. As a result of brown coal combustion, a large amount of this type of fly ash is produced, and considerations on their use in concrete are in progress. Research into the influence of high-calcium fly ash on concrete durability is fundamental for dealing with that issue. The aim of the present research was to develop a new model of carbonation over time, also including calcareous fly ash content in the binder. The self-terminating model of carbonation is new, and not developed by other authors. In the current research, the former simplest model (a function of w/c ratio and time) is expanded with the calcareous fly ash to cement ratio. The basis is a statistically planned experiment with a large scope of two material variables (w/c ratio and fly ash to cement ratio). The main measured property is the carbonation depth after exposure to 4% of CO<sub>2</sub> concentration (according to CEN/TS 12390-12). The model of carbonation obtained from this experiment is an output of the paper. Also, the idea of developing similar models for concrete families as a tool for designing concrete cover thickness for reinforced elements is described in the paper. |
| first_indexed | 2024-04-12T20:29:03Z |
| format | Article |
| id | doaj.art-1f9895a58d164651929d9ecf9981dfa6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T20:29:03Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1f9895a58d164651929d9ecf9981dfa62022-12-22T03:17:47ZengMDPI AGMaterials1996-19442019-08-011217266510.3390/ma12172665ma12172665Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-BinderPiotr Woyciechowski0Paweł Woliński1Grzegorz Adamczewski2Department of Building Materials Engineering, Warsaw University of Technology, 00-637 Warszawa, PolandFaculty of Applied Sciences, Collegium Mazovia Innovative School, 08-110 Siedlce, PolandDepartment of Building Materials Engineering, Warsaw University of Technology, 00-637 Warszawa, Poland<b> </b>According to the European Standards (EN 450-1, EN 206), it is not permissible to use calcareous fly ash as an additive to concrete. However, other standards (for example, the American and Canadian ones) allow the use of high-calcium fly ash (type C) in concrete. As a result of brown coal combustion, a large amount of this type of fly ash is produced, and considerations on their use in concrete are in progress. Research into the influence of high-calcium fly ash on concrete durability is fundamental for dealing with that issue. The aim of the present research was to develop a new model of carbonation over time, also including calcareous fly ash content in the binder. The self-terminating model of carbonation is new, and not developed by other authors. In the current research, the former simplest model (a function of w/c ratio and time) is expanded with the calcareous fly ash to cement ratio. The basis is a statistically planned experiment with a large scope of two material variables (w/c ratio and fly ash to cement ratio). The main measured property is the carbonation depth after exposure to 4% of CO<sub>2</sub> concentration (according to CEN/TS 12390-12). The model of carbonation obtained from this experiment is an output of the paper. Also, the idea of developing similar models for concrete families as a tool for designing concrete cover thickness for reinforced elements is described in the paper.https://www.mdpi.com/1996-1944/12/17/2665concretedurabilitycarbonation modelingcalcareous fly ash |
| spellingShingle | Piotr Woyciechowski Paweł Woliński Grzegorz Adamczewski Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder Materials concrete durability carbonation modeling calcareous fly ash |
| title | Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder |
| title_full | Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder |
| title_fullStr | Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder |
| title_full_unstemmed | Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder |
| title_short | Prediction of Carbonation Progress in Concrete Containing Calcareous Fly Ash Co-Binder |
| title_sort | prediction of carbonation progress in concrete containing calcareous fly ash co binder |
| topic | concrete durability carbonation modeling calcareous fly ash |
| url | https://www.mdpi.com/1996-1944/12/17/2665 |
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