Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Strength Characteristics and Impact Resistance of Fiber-Reinforced Geopolymer Concrete Elements
https://orcid.org/http://orcid.org/0000-0002-5978-4845
https://orcid.org/http://orcid.org/0000-0002-9092-8384
This chapter investigates the effects of fibers on the mechanical characteristics and impact resistance of GPC made using a blend of Class F fly ash (50%) and GGBS (50%) as binders. The alkaline initiator solution used to activate the GPC binder was a 12molar concentration NaOH solution mixed with liquid Na2SiO3. Mixes were made using a fly ash to alkaline liquid ratio of 2.0 and steel fibers were added in the quantities of 0.5%, 1%, 1.5%, and 2% by weight of the concrete. The mechanical properties of the material, namely its compressive strength, flexural strength, and split tensile strengths, were investigated. The impact resistance of plain and fiber-reinforced GPC was tested using 80 cm × 60 cm × 50 mm slab components. A drop hammer test was performed on the slabs. Experimental results showed that the compressive strength, split tensile strength, and flexural strengths of optimized 2% fibrous geopolymer concrete raised by 30.19%, 36.67%, and 75.87%, respectively, compared to plain GPC. In the GPC slabs with 0.5% to 2% steel fibers (GPCS0.5-GPCS2), the initial crack load increased 1.25–2.5 times more than in plain GPC slabs. The impact energy released by a 2% fiber-reinforced slab element was found to be higher when compared to other fiber-reinforced slabs. The analytical results from using Abaqus 2017 and the experimental results were highly comparable for crack patterns. Regression models were developed for plain and fiber-reinforced GPC components to predict impact energy at the initial crack and ultimate stages.
Strength Characteristics and Impact Resistance of Fiber-Reinforced Geopolymer Concrete Elements
https://orcid.org/http://orcid.org/0000-0002-5978-4845
https://orcid.org/http://orcid.org/0000-0002-9092-8384
This chapter investigates the effects of fibers on the mechanical characteristics and impact resistance of GPC made using a blend of Class F fly ash (50%) and GGBS (50%) as binders. The alkaline initiator solution used to activate the GPC binder was a 12molar concentration NaOH solution mixed with liquid Na2SiO3. Mixes were made using a fly ash to alkaline liquid ratio of 2.0 and steel fibers were added in the quantities of 0.5%, 1%, 1.5%, and 2% by weight of the concrete. The mechanical properties of the material, namely its compressive strength, flexural strength, and split tensile strengths, were investigated. The impact resistance of plain and fiber-reinforced GPC was tested using 80 cm × 60 cm × 50 mm slab components. A drop hammer test was performed on the slabs. Experimental results showed that the compressive strength, split tensile strength, and flexural strengths of optimized 2% fibrous geopolymer concrete raised by 30.19%, 36.67%, and 75.87%, respectively, compared to plain GPC. In the GPC slabs with 0.5% to 2% steel fibers (GPCS0.5-GPCS2), the initial crack load increased 1.25–2.5 times more than in plain GPC slabs. The impact energy released by a 2% fiber-reinforced slab element was found to be higher when compared to other fiber-reinforced slabs. The analytical results from using Abaqus 2017 and the experimental results were highly comparable for crack patterns. Regression models were developed for plain and fiber-reinforced GPC components to predict impact energy at the initial crack and ultimate stages.
Strength Characteristics and Impact Resistance of Fiber-Reinforced Geopolymer Concrete Elements
https://orcid.org/http://orcid.org/0000-0002-5978-4845
https://orcid.org/http://orcid.org/0000-0002-9092-8384
This chapter investigates the effects of fibers on the mechanical characteristics and impact resistance of GPC made using a blend of Class F fly ash (50%) and GGBS (50%) as binders. The alkaline initiator solution used to activate the GPC binder was a 12molar concentration NaOH solution mixed with liquid Na2SiO3. Mixes were made using a fly ash to alkaline liquid ratio of 2.0 and steel fibers were added in the quantities of 0.5%, 1%, 1.5%, and 2% by weight of the concrete. The mechanical properties of the material, namely its compressive strength, flexural strength, and split tensile strengths, were investigated. The impact resistance of plain and fiber-reinforced GPC was tested using 80 cm × 60 cm × 50 mm slab components. A drop hammer test was performed on the slabs. Experimental results showed that the compressive strength, split tensile strength, and flexural strengths of optimized 2% fibrous geopolymer concrete raised by 30.19%, 36.67%, and 75.87%, respectively, compared to plain GPC. In the GPC slabs with 0.5% to 2% steel fibers (GPCS0.5-GPCS2), the initial crack load increased 1.25–2.5 times more than in plain GPC slabs. The impact energy released by a 2% fiber-reinforced slab element was found to be higher when compared to other fiber-reinforced slabs. The analytical results from using Abaqus 2017 and the experimental results were highly comparable for crack patterns. Regression models were developed for plain and fiber-reinforced GPC components to predict impact energy at the initial crack and ultimate stages.
Strength Characteristics and Impact Resistance of Fiber-Reinforced Geopolymer Concrete Elements
Lecture Notes in Civil Engineering
Pancharathi, Rathish Kumar (Herausgeber:in) / K. Y. Leung, Christopher (Herausgeber:in) / Chandra Kishen, J. M. (Herausgeber:in) / Rayapudi, Sambaiah (Autor:in) / Rao, T. Chandra Sekhar (Autor:in)
International Conference on Cement and Building Koncrete for a Sustainable and Resilient Infrastructure ; 2023 ; Telangana, India
Low Carbon Materials and Technologies for a Sustainable and Resilient Infrastructure ; Kapitel: 37 ; 495-504
23.01.2024
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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