Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/1162
Title: Engineering performance of reinforced lightweight geopolymer concrete beams produced by ambient curing
Authors: Öztürk, Oğuzhan
Keywords: Geopolymer
Lightweight
Mechanical Properties
Structural Performance
Early Strength Properties
Fly-Ash
Shear Behavior
Nano-Silica
Fiber
Bond
Publisher: ERNST & SOHN
Abstract: The use of lightweight concrete can provide specific advantages that are favoring for mitigating seismic risk in building design. On the other hand, a significant reduction of carbon footprint could be possible through the use of geopolymer concrete. However, geopolymer concrete is mostly assessed through small specimens without reinforcement elements. This paper aims to couple the advantage of lightweight mixtures and ambient-cured geopolymerization in reinforced beams. To do this, engineering performance of reinforced lightweight geopolymer concrete was extensively investigated with different aspects. In mixtures, pumice and volcanic tuff aggregates were used with an appropriate gradation. Flexural strength, deflection capacities, initial stiffness, ductility, and energy dissipation capacity of reinforced geopolymer beams were investigated with the proposed configuration. Compressive strength and unit weight of the developed mixtures were also evaluated to meet design requirements for lightweight concrete. Results indicated that certain engineering properties (energy dissipation capacity and initial stiffness) of developed lightweight geopolymer concrete were considerably comparable with lightweight Portland cement-based concrete. Although compressive strength and unit weight of the developed geopolymer mixtures were satisfying, microstructural analysis indicated a weak bonding behavior between paste and lightweight aggregates.
URI: https://doi.org/10.1002/suco.202000664
https://hdl.handle.net/20.500.13091/1162
ISSN: 1464-4177
1751-7648
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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