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Advances in Concrete Construction   Volume 5, Number 3, June 2017, pages 183-199
Experimental studies on rheological properties of smart dynamic concrete
Sunil D. Bauchkar and H.S.Chore

Abstract     [Full Text]
    This paper reports an experimental study into the rheological behaviour of Smart Dynamic Concrete (SDC). The investigation is aimed at quantifying the effect of the varying amount of mineral admixtures on the rheology, setting time and compressive strength of SDC containing natural sand and crushed sand. Ordinary Portland cement (OPC) in conjunction with the mineral admixtures was used in different replacement ratio keeping the mix paste volume (35%) and water binder ratio (0.40) constant at controlled laboratory atmospheric temperature (33oC to 35oC). The results show that the properties and amount of fine aggregate have a strong influence on the admixture demand for similar initial workability, i.e., flow. The large amounts of fines and lower value of fineness modulus (FM) of natural sand primarily increases the yield stress of the SDC. The mineral admixtures at various replacement ratios strongly contribute to the yield stress and plastic viscosity of SDC due to inter particle friction and cohesion.
Key Words
    smart dynamic concrete (SDC); rheology; workability; ground granulated blast-furnace slag (GGBS); fly ash (FA); microsilica (MS); ICAR rheometer
Sunil D. Bauchkar and H.S.Chore: Department of Civil Engineering, Datta Meghe College of Engineering, Sector-3, Airoli, New Mumbai, 400708, India

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