Experimental Investigation of Rectangular Air-Cured Geopolymer Concrete Columns Reinforced with GFRP Bars and Stirrups

M. Elchalakani; M. Dong; A. Karrech; G. Li; M. S. Mohamed Ali; B. Yang

doi:10.1061/(asce)cc.1943-5614.0000938

journal article·2019-06

Experimental Investigation of Rectangular Air-Cured Geopolymer Concrete Columns Reinforced with GFRP Bars and Stirrups

M. Elchalakani, M. Dong, A. Karrech, G. Li, M. S. Mohamed Ali, B. Yang

Journal of Composites for Construction· Volume 23· Issue 3

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Abstract

Glass fiber-reinforced polymer (GFRP) bars in construction are increasing in popularity due to their excellent corrosion resistance, high tensile strength to weight ratio, and low maintenance. Geopolymer is a modern cementitious material that is known for its corrosion resistance and low carbon footprint. Combining the two could produce a green yet durable composite material that can be applied to aggressive environments such as Australia’s coastal zones. This paper experimentally investigates the load-moment interaction of GFRP-reinforced air-cured geopolymer concrete columns. The behavior of reinforced geopolymer concrete under combined loading were studied with 11 half-scale specimens. Three different stirrup spacings (75, 150, and 250 mm) were examined. Effective confinement was achieved by reducing the stirrup spacing such that high strains were measured in the concentric columns with closely spaced (75 mm) stirrups. A comparison between the experimental data and international design codes showed that such codes were conservative when ignoring the compressive strengths of the longitudinal GFRP bars. The experimental results were better represented when the compressive strengths of the bars were included; on average, the GFRP-reinforced geopolymer concrete columns exhibited 10.8% increase in strength with respect to unreinforced concrete sections.

Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloys Polymers Ceramics & glasses Composites

OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Structural Behavior of Reinforced Concrete

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Senior Lecturer, School of Civil, Environmental and Mining Engineering, Univ. of Western Australia, Crawley, WA 6009, Australia.

Ph.D. Student, School of Civil, Environmental and Mining Engineering, Univ. of Western Australia, Crawley, WA 6009, Australia. ORCID: .

Associate Professor, School of Civil, Environmental and Mining Engineering, Univ. of Western Australia, Crawley, WA 6009, Australia.

Senior Lecturer, Dept. of Chemical Engineering, Melbourne Univ., Melbourne, VIC 3000, Australia.

Senior Lecturer, Dept. of Civil Engineering, Univ. of Adelaide, Adelaide, SA 5000, Australia.

Professor, Ministry of Education, Chongqing Univ., Chongqing 400045, China (corresponding author).

References (18)

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