Activation of Red Mud and its Application to FRP-Confined Geopolymer Concrete
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Keywords:
Activated Red Mud, CFRP Sheets, Geopolymer Concrete, Compressive Strength, Stress-Strain CurvesAbstract
As sustainability gains importance, the demand for low-carbon materials is rising. Geopolymer
concrete (GC), using waste materials, is a promising eco-friendly alternative to traditional concrete but has
relatively low long-term compressive strength. This study investigates the impact of carbon fiber reinforced
polymer (CFRP) confinement on the axial performance of activated red mud-based geopolymer concrete
(RMGC). Testing 36 cylindrical RMGC samples with strengths of 15 MPa and 30 MPa, and one or two
layers of CFRP sheets, revealed significant strength improvements. For 15 MPa RMGC, CFRP layers
increased compressive strength by up to 153.85%, and for 30 MPa RMGC, up to 99.33%. CFRP
confinement was more effective in enhancing the properties of lower-strength RMGC.
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References
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