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Behavior of reinforced concrete beams cast with a proposed geopolymer concrete (GPC) mix
Hawileh, Rami A. Badrawi, Haitham A. Makahleh, Hisham Y. Karzad, Abdul Saboor Abdalla, Jamal A.
Hawileh, Rami A.
Badrawi, Haitham A.
Makahleh, Hisham Y.
Karzad, Abdul Saboor
Abdalla, Jamal A.
Date
2022-05-30
Advisor
Type
Article
Peer-Reviewed
Published version
Peer-Reviewed
Published version
Degree
Files
Description
Abstract
The aim of this paper is to examine the effects of using Ground Granulated Blast Furnace Slag (GGBFS) as a complete replacement to Ordinary Portland Cement (OPC) in Reinforced Concrete (RC) beams. The proposed GGBFS mix had an air content of 1.4%, a unit weight of 2480 kg/m3, a slump of 201 mm, and a compressive strength of 30 MPa after 56 days of curing. In addition, the GGBFS-based sample have shown an increased durability as it passed less chloride ions when compared to conventional concrete. A total of four beams were cast using the proposed mix and then tested under three-point loading and four-point loading. The beams were categorized into group 1, samples designed to fail in flexure, and group 2, samples designed to fail in shear. The performances of the GGBFS-based specimens were evaluated and compared to the control beams. In flexure, the GGBFS-based sample carried 83% of the control sample’s ultimate load which is considerably less than the expected 96%. Whereas the GGBFS-based shear deficient sample carried 79% of the load carried by the control beam. Although GGBFS samples carried less load, it is concluded that use of GGBFS as a full replacement to OPC is practical as the normalized capacity of GGBFS samples is comparable to that of the control samples. Additionally, using GGBFS contributes to the reduction of CO2 emissions and hence promotes the use of sustainable and green concrete.