Study on Mechanical and Rheological Properties of Solid Waste-Based ECC
As one of the main raw materials of engineered cementitious composite (ECC), fly ash exerts the “ball effect” and “pozzolanic effect” in concrete, which improves the working performance of concrete and enhances the strength of the concrete matrix. Polyvinyl alcohol (PVA) fiber has been widely used i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/10/1690 |
| _version_ | 1797474592434946048 |
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| author | Xiao Wang Ke Sun Jinggan Shao Juntao Ma |
| author_facet | Xiao Wang Ke Sun Jinggan Shao Juntao Ma |
| author_sort | Xiao Wang |
| collection | DOAJ |
| description | As one of the main raw materials of engineered cementitious composite (ECC), fly ash exerts the “ball effect” and “pozzolanic effect” in concrete, which improves the working performance of concrete and enhances the strength of the concrete matrix. Polyvinyl alcohol (PVA) fiber has been widely used in the preparation of ECC, while ground fly ash can be used to enhance the performance of ECC as a kind of high-activity admixture. In this paper, the compressive strength, flexural strength and flexural toughness of ECC prepared from different types of fly ash (raw fly ash, sorted fly ash and ground fly ash) are compared, and the rheological properties of the ECC are analyzed by studying the two parameters of yield stress and plastic viscosity. The results show that the smaller the particle size of fly ash is, the more sufficient it reacts with Ca(OH)<sub>2</sub> produced by cement hydration, and the more it can improve the compressive strength and flexural strength of the matrix. In addition, the smaller the particle size of fly ash, the higher the yield stress and plastic viscosity of ECC; therefore, the distribution of PVA fiber in ECC is more uniform, thereby improving the flexural toughness and ductility of ECC. |
| first_indexed | 2024-03-09T20:33:17Z |
| format | Article |
| id | doaj.art-a9b6f2afe0ca4033b6d97c171e9e934f |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T20:33:17Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
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| series | Buildings |
| spelling | doaj.art-a9b6f2afe0ca4033b6d97c171e9e934f2023-11-23T23:18:23ZengMDPI AGBuildings2075-53092022-10-011210169010.3390/buildings12101690Study on Mechanical and Rheological Properties of Solid Waste-Based ECCXiao Wang0Ke Sun1Jinggan Shao2Juntao Ma3School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaInternational Joint Research Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaGreen High-Performance Material Application Technology Transportation Industry Research and Development Center, Henan Jiaoyuan Engineering Technology Group Co., Ltd., Zhengzhou 451450, ChinaInternational Joint Research Lab for Eco-Building Materials and Engineering of Henan, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaAs one of the main raw materials of engineered cementitious composite (ECC), fly ash exerts the “ball effect” and “pozzolanic effect” in concrete, which improves the working performance of concrete and enhances the strength of the concrete matrix. Polyvinyl alcohol (PVA) fiber has been widely used in the preparation of ECC, while ground fly ash can be used to enhance the performance of ECC as a kind of high-activity admixture. In this paper, the compressive strength, flexural strength and flexural toughness of ECC prepared from different types of fly ash (raw fly ash, sorted fly ash and ground fly ash) are compared, and the rheological properties of the ECC are analyzed by studying the two parameters of yield stress and plastic viscosity. The results show that the smaller the particle size of fly ash is, the more sufficient it reacts with Ca(OH)<sub>2</sub> produced by cement hydration, and the more it can improve the compressive strength and flexural strength of the matrix. In addition, the smaller the particle size of fly ash, the higher the yield stress and plastic viscosity of ECC; therefore, the distribution of PVA fiber in ECC is more uniform, thereby improving the flexural toughness and ductility of ECC.https://www.mdpi.com/2075-5309/12/10/1690engineered cementitious compositePVA fiberground fly ashflexural toughnessrheological properties |
| spellingShingle | Xiao Wang Ke Sun Jinggan Shao Juntao Ma Study on Mechanical and Rheological Properties of Solid Waste-Based ECC Buildings engineered cementitious composite PVA fiber ground fly ash flexural toughness rheological properties |
| title | Study on Mechanical and Rheological Properties of Solid Waste-Based ECC |
| title_full | Study on Mechanical and Rheological Properties of Solid Waste-Based ECC |
| title_fullStr | Study on Mechanical and Rheological Properties of Solid Waste-Based ECC |
| title_full_unstemmed | Study on Mechanical and Rheological Properties of Solid Waste-Based ECC |
| title_short | Study on Mechanical and Rheological Properties of Solid Waste-Based ECC |
| title_sort | study on mechanical and rheological properties of solid waste based ecc |
| topic | engineered cementitious composite PVA fiber ground fly ash flexural toughness rheological properties |
| url | https://www.mdpi.com/2075-5309/12/10/1690 |
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