ISSN 2063-5346
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Yarlagadda Suma1 , Dr M Palanisamy2 , Devendra Dohare3 , T. S. Ramesh Babu4 , G Chennakesava Reddy5 , Dr. Sunil Kumar Ahirwar6
» doi: 10.48047/ecb/2023.12.9.01


In this study, the effects of various combinations and volume fractions of hybrid glass fibres (GF) addition on the characteristics of geopolymer concrete made with slag-fly ash blended are assessed. Two separate GF kinds (A and B) with lengths of 24 and 43 mm each were taken into consideration. GF were either fully or partially integrated. With an A:B ratio of 3:1, 1:1, or 1:3, and a constant volume percentage of 1%, three different hybrid GF combinations were employed. A GF hybrid combination with a 1:1 A:B ratio was used with three volume fractions (0.5, 1.0, and 1.5%). Workability, 1- and 7-day compressive strength, and 7-day splitting tensile strength were used to describe the performance. The outcomes of the experimental tests demonstrated that the addition of GF had a negative impact on the workability of geopolymer concrete. However, hybrid GF blends performed better than their equivalents generated from a single kind of GF. In addition, compared to the plain control mix, the inclusion of hybrid GF combinations boosted the compressive and splitting tensile strengths by up to 26 and 59%, respectively. The strengths improved as the hybrid GF volume fractions were raised by up to 1%. More long GF was added to the hybrid GF combination, resulting in the mix having a 1:3 A:B ratio, and exceptional strengths were seen. The results show that employing hybrid GF, the workability of slag-fly ash blended geopolymer concrete can be maintained while the hardened characteristics can be improved

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