Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing
As a common waste in the oil refinery industry, fluid catalytic cracking (FCC) ash is used to partially replace cement for high-performance high-speed 3D concrete printing (3DCP). Effects of FCC ash on hydration, rheology, and compressive strength were evaluated systematically, and the optimal subst...
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sg-ntu-dr.10356-1689962023-06-26T06:37:25Z Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing Lu, Bing Li, Hongliang Li, Mingyang Wong, Teck Neng Qian, Shunzhi School of Civil and Environmental Engineering School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Civil engineering Engineering::Mechanical engineering 3D Concrete Printing Cementitious Material As a common waste in the oil refinery industry, fluid catalytic cracking (FCC) ash is used to partially replace cement for high-performance high-speed 3D concrete printing (3DCP). Effects of FCC ash on hydration, rheology, and compressive strength were evaluated systematically, and the optimal substitution rate was determined as 20 wt. % of cement. A cylinder with 240 mm diameter and 500 mm height was successfully printed at a high speed of 100 mm/s with the optimal mixture in 5 min 53 s only. Moreover, the optimal mixture shows good leaching performance, and it also reduces CO2 emission by 21.45 % and materials’ cost by 17.98 % compared with the control. In addition to material optimization, the contributions of FCC ash to the early hydration and static yield stress were extensively analyzed. Complementary calorimetric and mineralogical investigations show that FCC ash accelerates the initial hydrolysis of cement and hydration of C3A and C3S. On the other hand, the quantitative analyses of static yield stress reveal the contributions of FCC ash on the colloidal force, volume fractions, particle size distribution, and ultimately static yield stress evolution. The developed 3D printable cementitious material possesses multiple advantages, including high-speed printing compatibility, enhanced sustainability, and high commercial values for oil refinery and construction industries. Based on the mineralogical property of FCC ash, the study also enlightens potential research and application of zeolite in 3D concrete printing in the future. National Research Foundation (NRF) This research is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme, CES_SDC Pte Ltd, and Chip Eng Seng Corporation Ltd. The authors would like to thank ECO Special Waste Management Pte. Ltd., Singapore for providing the FCC ash for this research study. 2023-06-26T06:37:25Z 2023-06-26T06:37:25Z 2023 Journal Article Lu, B., Li, H., Li, M., Wong, T. N. & Qian, S. (2023). Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing. Additive Manufacturing, 61, 103286-. https://dx.doi.org/10.1016/j.addma.2022.103286 2214-7810 https://hdl.handle.net/10356/168996 10.1016/j.addma.2022.103286 2-s2.0-85145665638 61 103286 en Additive Manufacturing © 2022 Elsevier B.V. All rights reserved. |
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Engineering::Civil engineering Engineering::Mechanical engineering 3D Concrete Printing Cementitious Material Lu, Bing Li, Hongliang Li, Mingyang Wong, Teck Neng Qian, Shunzhi Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
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As a common waste in the oil refinery industry, fluid catalytic cracking (FCC) ash is used to partially replace cement for high-performance high-speed 3D concrete printing (3DCP). Effects of FCC ash on hydration, rheology, and compressive strength were evaluated systematically, and the optimal substitution rate was determined as 20 wt. % of cement. A cylinder with 240 mm diameter and 500 mm height was successfully printed at a high speed of 100 mm/s with the optimal mixture in 5 min 53 s only. Moreover, the optimal mixture shows good leaching performance, and it also reduces CO2 emission by 21.45 % and materials’ cost by 17.98 % compared with the control. In addition to material optimization, the contributions of FCC ash to the early hydration and static yield stress were extensively analyzed. Complementary calorimetric and mineralogical investigations show that FCC ash accelerates the initial hydrolysis of cement and hydration of C3A and C3S. On the other hand, the quantitative analyses of static yield stress reveal the contributions of FCC ash on the colloidal force, volume fractions, particle size distribution, and ultimately static yield stress evolution. The developed 3D printable cementitious material possesses multiple advantages, including high-speed printing compatibility, enhanced sustainability, and high commercial values for oil refinery and construction industries. Based on the mineralogical property of FCC ash, the study also enlightens potential research and application of zeolite in 3D concrete printing in the future. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Lu, Bing Li, Hongliang Li, Mingyang Wong, Teck Neng Qian, Shunzhi |
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Article |
author |
Lu, Bing Li, Hongliang Li, Mingyang Wong, Teck Neng Qian, Shunzhi |
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Lu, Bing |
title |
Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
title_short |
Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
title_full |
Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
title_fullStr |
Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
title_full_unstemmed |
Mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
title_sort |
mechanism and design of fluid catalytic cracking ash-blended cementitious composites for high performance printing |
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2023 |
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https://hdl.handle.net/10356/168996 |
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1772828004775362560 |