Development of Ultra High Strength Self Compacting Fiber Reinforced Concrete Using Latest Admixture

B. Narendra Kumar*
Professor, Department of Civil Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, India.
Periodicity:June - August'2016
DOI : https://doi.org/10.26634/jce.6.3.8085

Abstract

An experimental study was conducted to investigate the behaviour of Ultra High Strength Self Compacting Fiber Reinforced Concrete using quartz sand and quartz powder. The investigation is done to obtain the mechanical properties of Ultra High Strength Self Compacting Fiber Reinforced Concrete (UHSSCFRC) by using the partial pozzolanic admixture, i.e. quartz powder, in addition to the use of hooked end steel fibers and complete replacement of river sand with quartz sand. In recent world, strength and flow ability in heavy reinforced structures have become a major issue. To boost up the strength, mineral admixtures like micro silica is added and the water-cement ratio has been drastically reduced. To overcome the reduction of water content, chemical admixtures are added in less dosage. The chemical admixture like superplasticizer and viscosity modifying agent increases the flow ability without segregation. Due to depletion of natural resources, we have to work at alternate fine aggregate. Hence it is required to use alternate materials like quartz sand to obtain more durability. Quartz sand has more resistance against acidic content in nature and high temperatures. The paste prepared by using quartz sand and quartz powder is much denser than the paste prepared by river sand, which easily flows in and compacts itself even in heavy reinforced structures. The study revealed that quartz powder and quartz sand can be used for developing UHSSCFRC by reducing water content and satisfy the flow properties according to EFNARC. The test result for acceptance characteristics for self compacting concrete such as slump flow, v-funnel, and L-box are presented. Further, the strength characteristics for 7 days, and 28 days are also presented.

Keywords

UHSSCFRC, Pozzolanic Admixture, Superplasticizer, Viscosity Modifying Admixtures, Quartz Powder.

How to Cite this Article?

Kumar,N.B. (2016). Development of Ultra High Strength Self Compacting Fiber Reinforced Concrete Using Latest Admixture. i-manager’s Journal on Civil Engineering, 6(3), 14-20. https://doi.org/10.26634/jce.6.3.8085

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