A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring
In the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. As such, this paper aims to quantify the effect of uncertainties in th...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2022-03-01
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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/8015 |
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| author | Xiangnan Ji Koji Takasu Hidehiro Koyamada Hiroki Suyama |
| author_facet | Xiangnan Ji Koji Takasu Hidehiro Koyamada Hiroki Suyama |
| author_sort | Xiangnan Ji |
| collection | DOAJ |
| description | In the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. As such, this paper aims to quantify the effect of uncertainties in the regional context on the sustainability evaluation of concrete materials. This is carried out by quantifying the regional context through establishing a weighting scheme and then integrating the obtained weights into the sustainability analysis of concrete materials in tandem with uncertainty analysis. Japan is used as a case study because although it relatively appears as a homogeneous country, its prefectures possess unique characteristics that may make the sustainability evaluation of concrete materials vary across prefectures. Cluster analysis is carried out in the 47 prefectures of Japan using a set of regional context indicators. Five clusters are identified with varying characteristics and these are translated into different weighting schemes. The established weights are used in the sustainability evaluation of concrete materials using multi-criteria decision-making analysis. The results showed that one mix is the most sustainable for four of the clusters and a different mix is the most sustainable for the remaining cluster. When uncertainty analysis is conducted, the effect of the weights in the sustainability evaluation is explained by examining the average scores of the concrete mixes and the variance of the scores across the five clusters. This investigation facilitated the understanding of how regional differences and the uncertainties associated with it impact the evaluation of concrete sustainability. |
| format | Article |
| id | doaj-art-900bbfba311d4ae8b2c434a50e4827df |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-900bbfba311d4ae8b2c434a50e4827df2025-08-20T03:33:41ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822022-03-013327728310.14311/APP.2022.33.02775255A study on properties of concrete with dry fly ash and fly ash slurry stored with stirringXiangnan Ji0Koji Takasu1Hidehiro Koyamada2Hiroki Suyama3The University of Kitakyushu, Faculty of Environmental Engineering, Department of Architecture, JapanThe University of Kitakyushu, Faculty of Environmental Engineering, Department of Architecture, JapanThe University of Kitakyushu, Faculty of Environmental Engineering, Department of Architecture, JapanThe University of Kitakyushu, Faculty of Environmental Engineering, Department of Architecture, JapanIn the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. As such, this paper aims to quantify the effect of uncertainties in the regional context on the sustainability evaluation of concrete materials. This is carried out by quantifying the regional context through establishing a weighting scheme and then integrating the obtained weights into the sustainability analysis of concrete materials in tandem with uncertainty analysis. Japan is used as a case study because although it relatively appears as a homogeneous country, its prefectures possess unique characteristics that may make the sustainability evaluation of concrete materials vary across prefectures. Cluster analysis is carried out in the 47 prefectures of Japan using a set of regional context indicators. Five clusters are identified with varying characteristics and these are translated into different weighting schemes. The established weights are used in the sustainability evaluation of concrete materials using multi-criteria decision-making analysis. The results showed that one mix is the most sustainable for four of the clusters and a different mix is the most sustainable for the remaining cluster. When uncertainty analysis is conducted, the effect of the weights in the sustainability evaluation is explained by examining the average scores of the concrete mixes and the variance of the scores across the five clusters. This investigation facilitated the understanding of how regional differences and the uncertainties associated with it impact the evaluation of concrete sustainability.https://ojs.cvut.cz/ojs/index.php/APP/article/view/8015dry powderflowfly ashfresh propertiesslumpslurry |
| spellingShingle | Xiangnan Ji Koji Takasu Hidehiro Koyamada Hiroki Suyama A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring Acta Polytechnica CTU Proceedings dry powder flow fly ash fresh properties slump slurry |
| title | A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring |
| title_full | A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring |
| title_fullStr | A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring |
| title_full_unstemmed | A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring |
| title_short | A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring |
| title_sort | study on properties of concrete with dry fly ash and fly ash slurry stored with stirring |
| topic | dry powder flow fly ash fresh properties slump slurry |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/8015 |
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