Abstract
Flowability is one of the prime characteristics of good concrete and plays a key role in Self Compacting Concrete (SCC). This study assesses the flowability of SCC with reduced cement content which is replaced by fly ash. Several mixes were prepared by using 5% to 30% fly ash. From the experimental work it was realized that by adjusting a suitable percentage of Super Plasticizer (SP), fly ash dosage can be increased with satisfactory fresh properties of concrete in accordance with the guidelines of EFNARC. At T50cm time the optimum amount of SP was 2%. It was noted that with increase in dosage of fly ash the slump flow increased but T50cm and V-funnel time were reduced. J-Ring height value varied from 9 to 10 for all mixes.
Highlights
Self Compacting Concrete (SCC) is popular because it is a workable concrete with a satisfactory level of strength
It is well recognized that Super Plasticizer (SP) is added in SCC to achieve the required workability
The fresh properties assessed by the workability tests of SCC depend upon the dosage of fly ash in the mix which can be adjusted by a suitable percentage of SP
Summary
Self Compacting Concrete (SCC) is popular because it is a workable concrete with a satisfactory level of strength. It is very useful for narrow sections with ignorable level of segregation and higher flexibility [1, 2]. Fly Ash (FA) is one of the commonly used cementitious materials used in producing economical and ecofriendly SCC with a satisfactory level of performance [13, 14]. It is useful in reducing the necessary quantity of Super Plastisizer (SP) for maintaining the required slump flow [15]
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