ORCID Profile
0000-0002-8239-5135
Current Organisation
NFC Institute of Engineering and Fertilizer Research
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Publisher: American Society of Civil Engineers (ASCE)
Date: 12-2021
Publisher: Wiley
Date: 02-01-2021
Abstract: In this study, the behavior of axially loaded plain and fiber‐reinforced geopolymer concrete columns reinforced with glass fiber‐reinforced polymer (GFRP) bars and helices was investigated. Ten ambient‐cured geopolymer concrete columns of 160 mm diameter and 640 mm height were cast and tested under concentric axial loads. The behavior of the columns was investigated under the effect of the type of reinforcement (steel vs. GFRP), pitch of the GFRP helices (40, 75, 100 mm), and addition of nonmetallic fibers, that is, glass fiber and polypropylene fiber. It was found that GFRP bar reinforced geopolymer concrete column achieved less axial load, confinement efficiency, and ductility compared to the geopolymer concrete column reinforced with the same amount of the steel reinforcement. Overall, the reduction in the pitch of the GFRP helices enhanced the confinement efficiency, post‐peak behavior, and ductility of the plain and fiber‐reinforced geopolymer concrete columns. Also, the addition of fibers significantly improved the ductility of the GFRP bar reinforced geopolymer concrete columns.
Publisher: Wiley
Date: 07-2023
Abstract: Geopolymer concrete (GC) has emerged as an environmentally friendly alternative to ordinary concrete, resulting from the alkalination of an Alumino‐Silicate (Al‐Si) source material. Large‐scale applications of GC are predicated on a suitable supply of Al‐Si sources, however rapid depletion of traditional sources like fly ash imposes a challenge therein and alternative source materials need to be identified. Agricultural waste ashes (AGWA) also exhibit high Al‐Si content therefore, in this study, two AGWA, that is, Corn Cob Ash (CCA) and Sugarcane Bagasse Ash (SCBA) were used in lieu of fly ash for GC synthesis. The results for workability and mechanical testing showed that properties of GC remained intact for up to 20% and 10% CCA and SCBA, respectively. Life cycle assessment showed that AGWA‐based GC reduced the greenhouse gas emissions of ordinary concrete by 49% and can be used as an environmentally friendly alternative thereof, thus contributing to the circular economy.
Publisher: Elsevier BV
Date: 10-2021
Publisher: Springer International Publishing
Date: 27-09-2022
Publisher: Springer International Publishing
Date: 27-09-2022
Publisher: Elsevier BV
Date: 12-2021
Publisher: Elsevier BV
Date: 09-2023
Location: Pakistan
No related grants have been discovered for Shehroze Ali.