Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar
Fiber reinforced alkali-activated materials (FR-AAM) present as one type of sustainable and resilient materials. However, the thermal degradation mechanism of FR-AAM remains unclear. In this study, FR-AAM incorporating air-cooled blast furnace slag (ACBF), ground granulated blast furnace slag (GGBS)...
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sg-ntu-dr.10356-1641232023-01-05T06:04:00Z Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar Shi, Jinyan Liu, Baoju Chu, Shaohua Zhang, Yu Zhang, Zedi Han, Kaidong School of Civil and Environmental Engineering Engineering::Civil engineering Fiber Reinforced Concrete Alkali-Activated Slag Fiber reinforced alkali-activated materials (FR-AAM) present as one type of sustainable and resilient materials. However, the thermal degradation mechanism of FR-AAM remains unclear. In this study, FR-AAM incorporating air-cooled blast furnace slag (ACBF), ground granulated blast furnace slag (GGBS) and different types of fibers (steel, glass, and polypropylene) are produced and exposed to elevated temperatures. Test results show that ACBF (replacing 30% of river sand) improved the thermal resistance of FR-AAM due to the ameliorated interfacial transition zone (ITZ) and channels for the release of vapor pressure. Relatively, steel fibers better retain mechanical performance, whilst polypropylene fibers better provide channels for the release of vapor pressure after melting. Gel decomposition and micro crack development are the main causes for the thermal deterioration of FR-AAM. Based on non-destructive tests, damage degree is proposed to quantitatively evaluate the usability and deterioration coefficient (K) is adopted to controll the strength retention of FR-AAM at high temperatures. Economically and environmentally, the development of FR-AAM is promising in shaping a sustainable and resilient future. The authors would like to thank the financial supports from the Science and Technology Research and Development Program Project of China railway group limited (Key Project, No.:2021-Key-08). 2023-01-05T06:04:00Z 2023-01-05T06:04:00Z 2022 Journal Article Shi, J., Liu, B., Chu, S., Zhang, Y., Zhang, Z. & Han, K. (2022). Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar. Powder Technology, 407, 117686-. https://dx.doi.org/10.1016/j.powtec.2022.117686 0032-5910 https://hdl.handle.net/10356/164123 10.1016/j.powtec.2022.117686 2-s2.0-85133477861 407 117686 en Powder Technology © 2022 Elsevier B.V. All rights reserved. |
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Engineering::Civil engineering Fiber Reinforced Concrete Alkali-Activated Slag Shi, Jinyan Liu, Baoju Chu, Shaohua Zhang, Yu Zhang, Zedi Han, Kaidong Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
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Fiber reinforced alkali-activated materials (FR-AAM) present as one type of sustainable and resilient materials. However, the thermal degradation mechanism of FR-AAM remains unclear. In this study, FR-AAM incorporating air-cooled blast furnace slag (ACBF), ground granulated blast furnace slag (GGBS) and different types of fibers (steel, glass, and polypropylene) are produced and exposed to elevated temperatures. Test results show that ACBF (replacing 30% of river sand) improved the thermal resistance of FR-AAM due to the ameliorated interfacial transition zone (ITZ) and channels for the release of vapor pressure. Relatively, steel fibers better retain mechanical performance, whilst polypropylene fibers better provide channels for the release of vapor pressure after melting. Gel decomposition and micro crack development are the main causes for the thermal deterioration of FR-AAM. Based on non-destructive tests, damage degree is proposed to quantitatively evaluate the usability and deterioration coefficient (K) is adopted to controll the strength retention of FR-AAM at high temperatures. Economically and environmentally, the development of FR-AAM is promising in shaping a sustainable and resilient future. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Shi, Jinyan Liu, Baoju Chu, Shaohua Zhang, Yu Zhang, Zedi Han, Kaidong |
format |
Article |
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Shi, Jinyan Liu, Baoju Chu, Shaohua Zhang, Yu Zhang, Zedi Han, Kaidong |
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Shi, Jinyan |
title |
Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
title_short |
Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
title_full |
Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
title_fullStr |
Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
title_full_unstemmed |
Recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
title_sort |
recycling air-cooled blast furnace slag in fiber reinforced alkali-activated mortar |
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2023 |
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https://hdl.handle.net/10356/164123 |
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1754611267181477888 |