Comprehensive study on performance of glass fibers-based concrete

Nerella, Ruben; Venkatesh, Chava; Durga, Chereddy Sonali Sri; Madduru, Sri Rama Chand

doi:10.1007/s41062-021-00490-4

Cited by 15 publications

(4 citation statements)

References 36 publications

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“…In the present study, the concrete sample's surface morphology and elemental composition were assessed using "Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy analyses (EDX) [42][43][44][45][46][47][48][49][50][51][52]. " The microstructure and elemental composition of the samples were analyzed using an SEM (Model: VEGA 3 Generation, TESCAN, Brno, Czech Republic) equipped with EDX spectroscopy (Model: EDAX-EDS-SSD, EDAX Inc., USA).…”

Section: Microstructural Propertiesmentioning

confidence: 99%

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

Chava,

M.v.,

Munugala

et al. 2024

Journal of Sustainable Construction Materials and Technologies

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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 replacement being optimal. Water immersion curing enhanced the compressive strength (3-15% increase) and chloride resistance (up to 30% decrease in migration coefficient) owing to improved hydration and microstructural refinement. Mineral admixtures reduced the sensitivity of SCC to curing method. Microstructural analysis showed higher density and additional C-S-H phases with mineral admixtures under wet curing. The study demonstrates that optimized SCC containing appropriate supplementary cementitious materials coupled with proper external curing can achieve high performance.

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Section: Microstructural Propertiesmentioning

confidence: 99%

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

Chava,

M.v.,

Munugala

et al. 2024

Journal of Sustainable Construction Materials and Technologies

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“…In this study, linear regression analysis was used to determine the relationships between compressive strength, split tensile strength, and flexural strength [55,56]. Using the derived equations, the split tensile and flexural strength values were predicted from the compressive strength data.…”

Section: Linear Regression Analysismentioning

confidence: 99%

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

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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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“…Glass fibers used in concrete have negative effects on the fresh properties of concrete while having positive effects on the hardened and durability properties of concrete. There is adequate bonding between cement paste and glass fiber for strength development in the concrete mix [57]. The use of glass fibers causes a slight increase in the compressive strength of concrete, while split tensile and flexural strength are increased considerably.…”

Section: Literature Reviewmentioning

confidence: 99%

An Investigation of Mechanical Properties of Fly Ash Based Geopolymer and Glass Fibers Concrete

et al. 2022

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This paper presents an innovative approach towards the development of a green concrete. The geopolymer is an environmentally friendly construction/repairing material. In addition, glass fibers are helpful to influence the strength properties and to reduce hair line cracks and bleeding in concrete. This study is based on the use of fly ash and glass fibers as a partial replacement of cement and, subsequently, its effect on compressive strength and split tensile strength of concrete. The geopolymer is manufactured after the process of geopolymerization between class F fly ash and alkali activator fluid (sodium silicate and sodium hydroxide). In geopolymer concretes (GPC), an inorganic polymer called aluminosilicate will act as a binder, the same as conventional concrete has Portland cement (OPC)-generated C-S-H gel. The glass fibers are added in the ratios of 3%, 6%, and 10% by weight of cement. To check the effect of geopolymer and glass fibers on compressive strength and split tensile strength of concrete, concrete cubes of size 150 × 150 × 150 mm and concrete cylinders of size 150 × 300 mm with or without geopolymer and glass fibers were casted and cured for 7, 14, 21, and 28 days. The compressive strength and split tensile strength of all concrete cubes and cylinders were determined by compression testing machine. The findings of the research study revealed that concrete having geopolymer and glass fibers used as a partial replacement of cement showed lesser strength as compared to conventional concrete. Concrete having glass fibers showed reduced workability and more segregation as compared to geopolymer concrete and normal concrete. However, the concrete made either with geopolymer or glass fibers is economical as compared to conventional concrete.

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Comprehensive study on performance of glass fibers-based concrete

Cited by 15 publications

References 36 publications

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

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

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

An Investigation of Mechanical Properties of Fly Ash Based Geopolymer and Glass Fibers Concrete

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