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Preparation and Performance Study of Slag-Waste Marble Powder Based Alkali-Activated High Performance Concrete
https://orcid.org/http://orcid.org/0009-0008-2605-0213
https://orcid.org/http://orcid.org/0000-0002-8516-9192
https://orcid.org/http://orcid.org/0009-0002-4433-6916
https://orcid.org/http://orcid.org/0009-0009-0516-4438
https://orcid.org/http://orcid.org/0000-0003-3851-2290
https://orcid.org/http://orcid.org/0000-0001-6360-2402
In this study, ground granulated blast-furnace slag (GGBS) and waste marble powder (WMP) were used as precursors to prepare slag-waste marble powder-based alkali-activated high-performance concrete (SWAHPC), and the effects and rules of different alkali activator modulus (1.0, 1.2, 1.4, 1.6, 1.8), Na2O dosages (4%, 7%, 10%), and WMP content (replacing 20%, 25%, 30%, 35%, 40% of GGBS) on the performance of SWAHPC were investigated. The results showed that excellent working performance and strength grade not lower than C85 high-strength concrete can be easily prepared when the WMP content does not exceed 40%. With increasing alkali activator modulus, the compressive strength of SWAHPC showed an increase followed by a decrease, while the flexural strength showed a decreasing trend, and the setting times and fluidity all exhibited an increasing trend. With increasing Na2O dosage, the compressive strength of SWAHPC showed an increasing and then decreasing trend, while the flexural strength showed a decreasing trend, the setting time showed an increasing trend, and the fluidity showed an increasing and then decreasing trend. With increasing WMP content, both the compressive and flexural strengths of SWAHPC showed an increase followed by a decrease, the setting times showed an increasing trend, and the fluidity showed a decreasing trend. The optimal values for the alkali activator modulus, Na2O dosage, and WMP content were 1.6, 7% and 25%, respectively for the compressive strength.
Preparation and Performance Study of Slag-Waste Marble Powder Based Alkali-Activated High Performance Concrete
https://orcid.org/http://orcid.org/0009-0008-2605-0213
https://orcid.org/http://orcid.org/0000-0002-8516-9192
https://orcid.org/http://orcid.org/0009-0002-4433-6916
https://orcid.org/http://orcid.org/0009-0009-0516-4438
https://orcid.org/http://orcid.org/0000-0003-3851-2290
https://orcid.org/http://orcid.org/0000-0001-6360-2402
In this study, ground granulated blast-furnace slag (GGBS) and waste marble powder (WMP) were used as precursors to prepare slag-waste marble powder-based alkali-activated high-performance concrete (SWAHPC), and the effects and rules of different alkali activator modulus (1.0, 1.2, 1.4, 1.6, 1.8), Na2O dosages (4%, 7%, 10%), and WMP content (replacing 20%, 25%, 30%, 35%, 40% of GGBS) on the performance of SWAHPC were investigated. The results showed that excellent working performance and strength grade not lower than C85 high-strength concrete can be easily prepared when the WMP content does not exceed 40%. With increasing alkali activator modulus, the compressive strength of SWAHPC showed an increase followed by a decrease, while the flexural strength showed a decreasing trend, and the setting times and fluidity all exhibited an increasing trend. With increasing Na2O dosage, the compressive strength of SWAHPC showed an increasing and then decreasing trend, while the flexural strength showed a decreasing trend, the setting time showed an increasing trend, and the fluidity showed an increasing and then decreasing trend. With increasing WMP content, both the compressive and flexural strengths of SWAHPC showed an increase followed by a decrease, the setting times showed an increasing trend, and the fluidity showed a decreasing trend. The optimal values for the alkali activator modulus, Na2O dosage, and WMP content were 1.6, 7% and 25%, respectively for the compressive strength.
Preparation and Performance Study of Slag-Waste Marble Powder Based Alkali-Activated High Performance Concrete
https://orcid.org/http://orcid.org/0009-0008-2605-0213
https://orcid.org/http://orcid.org/0000-0002-8516-9192
https://orcid.org/http://orcid.org/0009-0002-4433-6916
https://orcid.org/http://orcid.org/0009-0009-0516-4438
https://orcid.org/http://orcid.org/0000-0003-3851-2290
https://orcid.org/http://orcid.org/0000-0001-6360-2402
In this study, ground granulated blast-furnace slag (GGBS) and waste marble powder (WMP) were used as precursors to prepare slag-waste marble powder-based alkali-activated high-performance concrete (SWAHPC), and the effects and rules of different alkali activator modulus (1.0, 1.2, 1.4, 1.6, 1.8), Na2O dosages (4%, 7%, 10%), and WMP content (replacing 20%, 25%, 30%, 35%, 40% of GGBS) on the performance of SWAHPC were investigated. The results showed that excellent working performance and strength grade not lower than C85 high-strength concrete can be easily prepared when the WMP content does not exceed 40%. With increasing alkali activator modulus, the compressive strength of SWAHPC showed an increase followed by a decrease, while the flexural strength showed a decreasing trend, and the setting times and fluidity all exhibited an increasing trend. With increasing Na2O dosage, the compressive strength of SWAHPC showed an increasing and then decreasing trend, while the flexural strength showed a decreasing trend, the setting time showed an increasing trend, and the fluidity showed an increasing and then decreasing trend. With increasing WMP content, both the compressive and flexural strengths of SWAHPC showed an increase followed by a decrease, the setting times showed an increasing trend, and the fluidity showed a decreasing trend. The optimal values for the alkali activator modulus, Na2O dosage, and WMP content were 1.6, 7% and 25%, respectively for the compressive strength.
Preparation and Performance Study of Slag-Waste Marble Powder Based Alkali-Activated High Performance Concrete
Lecture Notes in Civil Engineering
Guo, Wei (editor) / Qian, Kai (editor) / Tang, Honggang (editor) / Gong, Lei (editor) / Deng, Xiaofang (author) / Lin, Weixin (author) / Li, Hongtao (author) / Li, Yuanju (author) / Weng, Yunhao (author) / Liu, Bing (author)
International Conference on Green Building, Civil Engineering and Smart City ; 2023 ; Guiyang, China
2024-02-02
11 pages
Article/Chapter (Book)
Electronic Resource
English
| European Patent Office | 2023
Performance of alkali-activated slag concrete
| Tema Archive | 2001