Effect of Mineral Admixtures and Curing Regimes on Properties of Self-Compacting Concrete

Chava, Venkatesh; M.v., Seshagiri Rao; Munugala, Praveen Kumar; Chereddy, Sonali Sri Durga

doi:10.47481/jscmt.1383493

Journal of Sustainable Construction Materials and Technologies

2024

DOI: 10.47481/jscmt.1383493

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Effect of Mineral Admixtures and Curing Regimes on Properties of Self-Compacting Concrete

Venkatesh Chava,

Seshagiri Rao M.v.,

Praveen Kumar Munugala

et al.

Abstract: This study investigated the influence of mineral admixtures (fly ash, silica fume, metakaolin) and curing conditions (water immersion, polyethylene glycol, gunny bags, accelerated curing) on the properties of self-compacting concrete (SCC). The rheological properties, compressive strength, chloride penetration resistance, and microstructure were evaluated. Incorporating mineral admixtures improved the workability, strength (up to 53% increase), and durability of SCC compared to plain mixes, with 20% metakaolin… Show more

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Cited by 3 publications

References 39 publications

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Synergistic effects of graphene oxide and limestone calcined clay cement on mechanical properties and durability of concrete

Venkatesh,

Mallikarjuna,

Rao

et al. 2024

J Build Rehabil

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Synergistic effects of graphene oxide and limestone calcined clay cement on mechanical properties and durability of concrete

Venkatesh,

Mallikarjuna,

Rao

et al. 2024

J Build Rehabil

View full text Add to dashboard Cite

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Ningampalli,

Rao,

Desai

2024

Journal of Sustainable Construction Materials and Technologies

Self Cite

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In the current research, an attempt was made to examine the flexural and cracking behavior of reinforced lightweight self-compacting concrete (LWSCC) beams incorporating light-expand- ed clay aggregate (LECA) as a partial replacement for natural coarse aggregate (NCA). Me- chanical properties such as compressive strength, split tensile strength, and flexural strength were evaluated, alongside fresh properties assessed using flow table, V-funnel, J-ring, and L-box tests. The study examined six beams, including a control mix, with LECA replacements of 5%, 10%, 15%, 20%, and 25%. The results indicate that compressive strength decreased with higher LECA content, from 44.56 MPa in the control mix to 32.73 MPa at 25% LECA. Flexural and split tensile strengths showed similar trends. Crack width increased with LECA content, from 1 mm in the control mix to 2 mm at 25% LECA, while density decreased. Flexur- al performance analysis revealed reduced ultimate load capacity and increased deflection with higher LECA proportions. The ductility index improved, suggesting enhanced flexibility. This study concludes that LECA can effectively replace NCA in LWSCC, though with a trade-off in strength and cracking behavior.

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Synergistic effects of GGBFS addition and oven drying on the physical and mechanical properties of fly ash-based geopolymer aggregates

Sonali Sri Durga,

Chava,

Priyanka

et al. 2024

Journal of Sustainable Construction Materials and Technologies

Self Cite

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Conventional coarse aggregates, extracted from natural sources, pose environmental challenges such as habitat destruction, resource depletion, and high energy consumption. To mitigate these effects, this study prepared geopolymer aggregates (G.A.) using fly ash–GGBFS and an alkali ac- tivator solution through pelletization. Furthermore, two aggregate drying methods, oven drying, and ambient air drying, are adopted to evaluate their optimal performance through physical and mechanical tests. The results Indicated that oven-dried geopolymer aggregates exhibited optimal behavior in all experimental aspects compared to ambient air-dried aggregates. Specifically, the 80% fly ash–20% GGBFS mixed aggregates demonstrated lower crushing value (20.80%), impact value (24.7%), water absorption (13.67%), and abrasion values (7.01%) than other mixes. No considerable difference was observed in the density and specific gravity of aggregates between the two drying methods. Subsequently, these aggregates were used as a 100% replacement for conventional coarse aggregates in concrete, and the concrete's mechanical properties, such as compressive, split tensile, and flexural strengths, were investigated. Please update the following sentence in place of the highlighted sentence. The mix M3 (i.e., 80% fly ash–20% GGBFS mixed aggregates incorporated concrete) showed superior performance and are considered the opti- mum mix. Specifically, in the compressive strength results, the mix M3 showed a 26.31% and 14.28% strength increase compared to the 100% fly ash aggregates incorporated concrete mix in oven-dried aggregates and ambient-dried aggregates incorporated concrete, respectively. The lin- ear regression equation derived from the experimental results was used to predict the split tensile and flexural strength, showing a good correlation between the experimental and expected results.

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Effect of Mineral Admixtures and Curing Regimes on Properties of Self-Compacting Concrete

Cited by 3 publications

References 39 publications

Synergistic effects of graphene oxide and limestone calcined clay cement on mechanical properties and durability of concrete

Synergistic effects of graphene oxide and limestone calcined clay cement on mechanical properties and durability of concrete

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Synergistic effects of GGBFS addition and oven drying on the physical and mechanical properties of fly ash-based geopolymer aggregates

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