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Characterization Study of Zinc Sulphate’s Influence and Retarding Mechanism with Coarser and Finer Fly Ash Particles in Concrete
Pozzolan, a modified cementitious material, has a major impact on the construction industry. Among the different composite materials, fly ash blended cement has great part due to its abundance. In recent years, the pulverized fly ash has become the key interest among the researchers because of its improved physical properties. This makes it necessary to study the effect of fly ash blends with various chemical admixtures. This study primarily focuses on bringing the changes happening in the strength, retarding mechanism, setting time, mineralogy, and microstructure caused by the addition of Zinc Sulphate (ZnSO4) in concrete having various percentages of raw fly ash (RFA) and ultrafine fly ash (UFFA). The result shows that ZnSO4 increases the setting time by more than 60%. Also, the study indicates decreased strength in concrete because of the reduced formation of hydrated products; this phenomenon is confirmed by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray fluorescence (XRF) analysis.
Characterization Study of Zinc Sulphate’s Influence and Retarding Mechanism with Coarser and Finer Fly Ash Particles in Concrete
Pozzolan, a modified cementitious material, has a major impact on the construction industry. Among the different composite materials, fly ash blended cement has great part due to its abundance. In recent years, the pulverized fly ash has become the key interest among the researchers because of its improved physical properties. This makes it necessary to study the effect of fly ash blends with various chemical admixtures. This study primarily focuses on bringing the changes happening in the strength, retarding mechanism, setting time, mineralogy, and microstructure caused by the addition of Zinc Sulphate (ZnSO4) in concrete having various percentages of raw fly ash (RFA) and ultrafine fly ash (UFFA). The result shows that ZnSO4 increases the setting time by more than 60%. Also, the study indicates decreased strength in concrete because of the reduced formation of hydrated products; this phenomenon is confirmed by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray fluorescence (XRF) analysis.
Characterization Study of Zinc Sulphate’s Influence and Retarding Mechanism with Coarser and Finer Fly Ash Particles in Concrete
KSCE J Civ Eng
Krishnaraj, Loganathan (author) / Ramesh, Niranjan (author) / Kumar, Rajendran Senthil (author) / George, Prem Kumar (author)
KSCE Journal of Civil Engineering ; 24 ; 2751-2766
2020-09-01
16 pages
Article (Journal)
Electronic Resource
English
Abrasion resistance of ultra high performance concrete incorporating coarser aggregate
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