Abstract
This study presents laboratory results of compressive strength (CS), ultrasonic pulse velocity (UPV), and surface electrical resistivity (ER) of low-fines self-consolidating concrete (LF-SCC) mixes with fly ash (FA) replacing ordinary Portland cement. The effect of FA addition on these properties at curing periods of 28, 56, and 90 day is discussed. From the results it is observed that addition of FA up to 20% is found to enhance the attributes of LF-SCC mixes in terms of CS, UPV and ER. The range of 28 days strength is 37.74 – 51.60 MPa. From the results of UPV all LF-SCC are found to be ‘Good’ concrete grades. The results of ER at all the curing periods show that all the six LF-SCCs are rated as ‘very low’ in terms of penetration of chloride ions as ER results are found to be in the range of 37–254 kΩ-cm.
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