Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study on the Mix Proportion of Waste Marble Powder-Ground Granulated Furnace Slag-Based Alkali-Activated Ultra-high Ductility Concrete
https://orcid.org/http://orcid.org/0000-0002-4667-2318
https://orcid.org/http://orcid.org/0009-0002-6198-0850
https://orcid.org/http://orcid.org/0009-0001-0779-2800
https://orcid.org/http://orcid.org/0009-0008-4249-1932
https://orcid.org/http://orcid.org/0000-0002-9922-0876
https://orcid.org/http://orcid.org/0000-0001-6360-2402
The engineered cementitious composites (ECC) has an ultimate tensile strain more than 300 times that of regular concrete, making it highly promising for improving the seismic energy dissipation capacity of buildings, repairing damaged structures, and bridge expansion joints. However, the high CO2 emissions associated with the use of high cement content in ECC contradict the low-carbon and sustainable development principles of the building materials industry. In light of this, this paper investigates the use of solid waste-based alkali-activated cementitious materials to replace cement to prepare ground granulated blast furnace slag (GGBFS)-waste marble powder (WMP) -based alkali-activated ultra-high ductility concrete (AUHDC), achieving high-value utilization of solid waste and low-carbon preparation of ultra-high ductility engineering materials. This study assesses the key parameters of the WMP percentage in the precursor mixture, sand ratio, thickener content, and fiber composition on the tensile properties of AUHDC through uniaxial tensile tests. The results indicate that the ultimate tensile strain initially increases and then decreases with increasing WMP percentage in the precursor mixture, and it increases with increasing sand ratio. The thickener content does not significantly affect the ultimate tensile stress and strain, but the flowability decreases with increasing thickener content. The ultimate tensile strain of AUHDC with 2% polyvinyl alcohol (PVA) fiber and 2% polypropylene (PP) fiber is much lower than that of 1% ultra-high molecular weight polyethylene (PE) + 1% PP fiber and 2% PE fiber AUHDC. The ultimate tensile strain of AUHDC prepared with a WMP percentage of 50%, sand ratio of 55%, thickener content of 0.1%, and 1% PE + 1% PP fiber is 7.4%, which is 700 times that of regular concrete, and the ultimate tensile stress can also reach 6.2 MPa.
Study on the Mix Proportion of Waste Marble Powder-Ground Granulated Furnace Slag-Based Alkali-Activated Ultra-high Ductility Concrete
https://orcid.org/http://orcid.org/0000-0002-4667-2318
https://orcid.org/http://orcid.org/0009-0002-6198-0850
https://orcid.org/http://orcid.org/0009-0001-0779-2800
https://orcid.org/http://orcid.org/0009-0008-4249-1932
https://orcid.org/http://orcid.org/0000-0002-9922-0876
https://orcid.org/http://orcid.org/0000-0001-6360-2402
The engineered cementitious composites (ECC) has an ultimate tensile strain more than 300 times that of regular concrete, making it highly promising for improving the seismic energy dissipation capacity of buildings, repairing damaged structures, and bridge expansion joints. However, the high CO2 emissions associated with the use of high cement content in ECC contradict the low-carbon and sustainable development principles of the building materials industry. In light of this, this paper investigates the use of solid waste-based alkali-activated cementitious materials to replace cement to prepare ground granulated blast furnace slag (GGBFS)-waste marble powder (WMP) -based alkali-activated ultra-high ductility concrete (AUHDC), achieving high-value utilization of solid waste and low-carbon preparation of ultra-high ductility engineering materials. This study assesses the key parameters of the WMP percentage in the precursor mixture, sand ratio, thickener content, and fiber composition on the tensile properties of AUHDC through uniaxial tensile tests. The results indicate that the ultimate tensile strain initially increases and then decreases with increasing WMP percentage in the precursor mixture, and it increases with increasing sand ratio. The thickener content does not significantly affect the ultimate tensile stress and strain, but the flowability decreases with increasing thickener content. The ultimate tensile strain of AUHDC with 2% polyvinyl alcohol (PVA) fiber and 2% polypropylene (PP) fiber is much lower than that of 1% ultra-high molecular weight polyethylene (PE) + 1% PP fiber and 2% PE fiber AUHDC. The ultimate tensile strain of AUHDC prepared with a WMP percentage of 50%, sand ratio of 55%, thickener content of 0.1%, and 1% PE + 1% PP fiber is 7.4%, which is 700 times that of regular concrete, and the ultimate tensile stress can also reach 6.2 MPa.
Study on the Mix Proportion of Waste Marble Powder-Ground Granulated Furnace Slag-Based Alkali-Activated Ultra-high Ductility Concrete
https://orcid.org/http://orcid.org/0000-0002-4667-2318
https://orcid.org/http://orcid.org/0009-0002-6198-0850
https://orcid.org/http://orcid.org/0009-0001-0779-2800
https://orcid.org/http://orcid.org/0009-0008-4249-1932
https://orcid.org/http://orcid.org/0000-0002-9922-0876
https://orcid.org/http://orcid.org/0000-0001-6360-2402
The engineered cementitious composites (ECC) has an ultimate tensile strain more than 300 times that of regular concrete, making it highly promising for improving the seismic energy dissipation capacity of buildings, repairing damaged structures, and bridge expansion joints. However, the high CO2 emissions associated with the use of high cement content in ECC contradict the low-carbon and sustainable development principles of the building materials industry. In light of this, this paper investigates the use of solid waste-based alkali-activated cementitious materials to replace cement to prepare ground granulated blast furnace slag (GGBFS)-waste marble powder (WMP) -based alkali-activated ultra-high ductility concrete (AUHDC), achieving high-value utilization of solid waste and low-carbon preparation of ultra-high ductility engineering materials. This study assesses the key parameters of the WMP percentage in the precursor mixture, sand ratio, thickener content, and fiber composition on the tensile properties of AUHDC through uniaxial tensile tests. The results indicate that the ultimate tensile strain initially increases and then decreases with increasing WMP percentage in the precursor mixture, and it increases with increasing sand ratio. The thickener content does not significantly affect the ultimate tensile stress and strain, but the flowability decreases with increasing thickener content. The ultimate tensile strain of AUHDC with 2% polyvinyl alcohol (PVA) fiber and 2% polypropylene (PP) fiber is much lower than that of 1% ultra-high molecular weight polyethylene (PE) + 1% PP fiber and 2% PE fiber AUHDC. The ultimate tensile strain of AUHDC prepared with a WMP percentage of 50%, sand ratio of 55%, thickener content of 0.1%, and 1% PE + 1% PP fiber is 7.4%, which is 700 times that of regular concrete, and the ultimate tensile stress can also reach 6.2 MPa.
Study on the Mix Proportion of Waste Marble Powder-Ground Granulated Furnace Slag-Based Alkali-Activated Ultra-high Ductility Concrete
Lecture Notes in Civil Engineering
Guo, Wei (Herausgeber:in) / Qian, Kai (Herausgeber:in) / Tang, Honggang (Herausgeber:in) / Gong, Lei (Herausgeber:in) / Zhang, Yi (Autor:in) / Ren, Ruihao (Autor:in) / Mo, Binyu (Autor:in) / Mu, Rongcun (Autor:in) / Huang, Ting (Autor:in) / Liu, Bing (Autor:in)
International Conference on Green Building, Civil Engineering and Smart City ; 2023 ; Guiyang, China
02.02.2024
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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