Confinement of Concrete Using Banana Geotextile-Reinforced Geopolymer Mortar

Vincent P. Pilien, Michael Angelo B. Promentilla, Julius L. Leaño, Andres Winston C. Oreta and Jason Maximino C. Ongpeng ()
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Vincent P. Pilien: Department of Civil Engineering, De La Salle University, Manila 0922, Philippines
Michael Angelo B. Promentilla: Waste and Resource Management Unit, Center for Engineering and Sustainable Development Research, De La Salle University, Manila 0922, Philippines
Julius L. Leaño: Research and Development Division, Department of Science and Technology, Philippine Textile Research Institute, Metro Manila 1863, Philippines
Andres Winston C. Oreta: Department of Civil Engineering, De La Salle University, Manila 0922, Philippines
Jason Maximino C. Ongpeng: Department of Civil Engineering, De La Salle University, Manila 0922, Philippines

Sustainability, 2023, vol. 15, issue 7, 1-22

Abstract: Geopolymer, a sustainable alternative to ordinary Portland cement (OPC), offers reduced embodied energy, lower carbon emissions, enhanced durability, eco-compatibility, and waste valorization potential. In confining structural members, geopolymer still has limitations with respect to its brittleness and other properties. Enhancing the properties of geopolymer by adding banana fibers (BF) and fly ash (FA) to form banana geotextile-reinforced geopolymer mortar (BGT-RGM) as confining material, is investigated in this experimental study. BGT-RGM is a textile-reinforced mortar with varying thickness of BF-reinforced geopolymer mortar (BFRGM) through NaOH-treated 10 mm BFs and 2 mm banana geotextile (BGT) having varied grid spacings. To develop BGT-RGM, the physical, mechanical, and chemical properties of the BFs were determined, while BFRGMs were evaluated for compressive and dog-bone tensile strengths, workability, scanning electron microscopy (SEM) imaging, and thermogravimetric analysis (TGA). The BGT-RGM-confined and unconfined concrete were evaluated, and the strength variations were imparted by the confinement as reflected on the stress-strain curves. The local crack formation mode of failure was also determined through crack patterns during an axial load test. The BGT-RGM with 20 mm thickness of BFRGM with 15 mm and 20 mm geotextile grid spacings, exhibited 33.3% and 33.1% increases in strength, respectively. Future investigations towards the development and application of BGT-RGM are also discussed.

Keywords: banana geotextiles; natural fiber; banana fiber; coal fly ash; textile-reinforced mortar; microstructure; green mortar (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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