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Research Article

Optimization of hybrid fibre reinforced geopolymer concrete using hardened and durability properties

Kadarkarai Arunkumar1, Arunachalam Sureshkumar2, Arunasankar Chithambar Ganesh2, Loganathan Parthiban2, Premkumar V2

1Department of Civil Engineering, Mangalam College of Engineering, Ettumanoor, Kerala, India

2Department of Civil Engineering, Sree Vidyanikethan Engineering College, Tirupati, India

Keywords

Abstract



Rubber fibre;

Geopolymer concrete;

Durability;

Optimization;

Hybrid fibres

Geopolymer concrete is the finest replacement to ordinary portland cement concrete, reducing greenhouse gas emissions in cement production. Most of the binders used in geopolymer concrete require high alkaline solution, high-temperature curing, and a prolonged time for setting. In this study, wood ash, which has an alkaline compound in its composition, is used to replace fly ash. The binder ratio is fixed as 70 percent of fly ash and 30 percent of wood ash. Meanwhile, geopolymer concrete lacks brittleness, energy absorption, and impact strength. The addition of fibres is helped in improving the above-mentioned properties. This study has made an effort to incorporate waste rubber as fibre combined with polypropylene fibre. The various dosage of polypropylene and rubber fibre hybridization such as 0/1, 0.75/0.25, 0.5/0.5, 0.25/0.75, 1/0, and 1/1 is optimized. The impact of various fibre dosages on fresh and hardened characteristics of geopolymer concrete is assessed. Further, the impact of various hybrid fibre dosages on durability was also investigated in this study. As a result, the hybrid fibre dosage of 0.5 percent of PP and 0.5 percent of rubber attained significant performance in all hardened properties. The optimum mix also showed better resistance against all durability properties. The mix with 0.5PP/0.5R gained the maximum compressive strength of 47.30Mpa, which is sufficient to design the paver block for medium traffic conditions as per IS15658-2006.

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01/01/2024 Best Paper Award: The winners of 2023 Best Paper Award of Research on Engineering Structures and Materials (RESM) are announced. More information can be found at Author Awards section.


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LATEST AWARDS


2023 Reviewer Awards:

Please, visit Reviewer Awards section for the winners of the 2022 RESM reviewer awards.



2023 Best Paper Award:

The paper authored by Ferzan Fidan, Naim Aslan, Mümin Mehmet Koç entitled as “Morpho-structural and compressive mechanical properties of graphene oxide reinforced hydroxyapatite scaffolds for bone tissue applications” is awarded.



2023 Most Cited Paper Award:

The paper authored by Ercan Işık, Ehsan Harirchian, Hüseyin Bilgin, Kirti Jadhav entitled as “The effect of material strength and discontinuity in RC structures according to different site-specific design spectra" is awarded.


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