Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete
This study examined the microstructure characteristics, electrical resistivity (ER), and mechanical properties of ultra-high-performance concrete (UHPC) made with nano-silica (NS), electric arc furnace slag (EAFS), and waste glass powder (WGP). Eight concrete mixtures of binary and ternary blends we...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-02-01
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| Series: | Open Engineering |
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| Online Access: | https://doi.org/10.1515/eng-2024-0105 |
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| author | Mohammed Abbas J. Hassan Maan S. Al-Quraishi Hussein |
| author_facet | Mohammed Abbas J. Hassan Maan S. Al-Quraishi Hussein |
| author_sort | Mohammed Abbas J. |
| collection | DOAJ |
| description | This study examined the microstructure characteristics, electrical resistivity (ER), and mechanical properties of ultra-high-performance concrete (UHPC) made with nano-silica (NS), electric arc furnace slag (EAFS), and waste glass powder (WGP). Eight concrete mixtures of binary and ternary blends were assessed to investigate the possible relationships between the observed physical and microstructural features with the obtained compressive and flexural strengths. The individual and combined effects of NS, EAFS (up to 50% replacement of silica sand), and WGP (up to 30% cement replacement) on the examined properties were evaluated. Scanning electron microscopy (SEM), thermogravimetric (TG) analysis, X-ray diffraction (XRD), ER, and pH values, and measurements were employed. SEM examination indicated that using NS along with EAFS and WGP reduced gap space around the fiber, and the enormous single cracks turned into numerous small cracks, thereby improving bonding and flexural strength. TG and XRD studies supported this finding. The ER for the EAFS specimens was enhanced without compromising the alkalinity range of concrete, as proved by pH tests, which address the possible corrosion problem of reinforcement. Thus, sustainable UHPC is achievable. |
| format | Article |
| id | doaj-art-20ebf8f5c63742b5901e752b5d23485d |
| institution | DOAJ |
| issn | 2391-5439 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Engineering |
| spelling | doaj-art-20ebf8f5c63742b5901e752b5d23485d2025-08-20T03:10:49ZengDe GruyterOpen Engineering2391-54392025-02-01151e00559910.1515/eng-2024-0105Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concreteMohammed Abbas J.0Hassan Maan S.1Al-Quraishi Hussein2Civil Engineering Department, University of Technology, 10066, Baghdad, IraqCivil Engineering Department, University of Technology, 10066, Baghdad, IraqCivil Engineering Department, University of Technology, 10066, Baghdad, IraqThis study examined the microstructure characteristics, electrical resistivity (ER), and mechanical properties of ultra-high-performance concrete (UHPC) made with nano-silica (NS), electric arc furnace slag (EAFS), and waste glass powder (WGP). Eight concrete mixtures of binary and ternary blends were assessed to investigate the possible relationships between the observed physical and microstructural features with the obtained compressive and flexural strengths. The individual and combined effects of NS, EAFS (up to 50% replacement of silica sand), and WGP (up to 30% cement replacement) on the examined properties were evaluated. Scanning electron microscopy (SEM), thermogravimetric (TG) analysis, X-ray diffraction (XRD), ER, and pH values, and measurements were employed. SEM examination indicated that using NS along with EAFS and WGP reduced gap space around the fiber, and the enormous single cracks turned into numerous small cracks, thereby improving bonding and flexural strength. TG and XRD studies supported this finding. The ER for the EAFS specimens was enhanced without compromising the alkalinity range of concrete, as proved by pH tests, which address the possible corrosion problem of reinforcement. Thus, sustainable UHPC is achievable.https://doi.org/10.1515/eng-2024-0105electric arc furnace slagelectrical resistivityprobability density functionsscanning electron microscopythermogravimetric analysisuhpc |
| spellingShingle | Mohammed Abbas J. Hassan Maan S. Al-Quraishi Hussein Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete Open Engineering electric arc furnace slag electrical resistivity probability density functions scanning electron microscopy thermogravimetric analysis uhpc |
| title | Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete |
| title_full | Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete |
| title_fullStr | Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete |
| title_full_unstemmed | Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete |
| title_short | Synergistic effect of nano-silica, steel slag, and waste glass on the microstructure, electrical resistivity, and strength of ultra-high-performance concrete |
| title_sort | synergistic effect of nano silica steel slag and waste glass on the microstructure electrical resistivity and strength of ultra high performance concrete |
| topic | electric arc furnace slag electrical resistivity probability density functions scanning electron microscopy thermogravimetric analysis uhpc |
| url | https://doi.org/10.1515/eng-2024-0105 |
| work_keys_str_mv | AT mohammedabbasj synergisticeffectofnanosilicasteelslagandwasteglassonthemicrostructureelectricalresistivityandstrengthofultrahighperformanceconcrete AT hassanmaans synergisticeffectofnanosilicasteelslagandwasteglassonthemicrostructureelectricalresistivityandstrengthofultrahighperformanceconcrete AT alquraishihussein synergisticeffectofnanosilicasteelslagandwasteglassonthemicrostructureelectricalresistivityandstrengthofultrahighperformanceconcrete |