Self-Compacting Concrete using PPC and SNF

Nayaka, Ramesh and Kumar, Anil P M (2015) Self-Compacting Concrete using PPC and SNF. In: Asia – pacific young researchers and graduates symposium, 20/08/2015, Kuala Lumpur, Malysia.

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Abstract

Recent Developments in sustainable concrete have received more attention in the present scenario with the limited availability of resources. Various attempts have been made to avoid the scarcity in the availability non-renewable ingredients of concrete like of fine aggregates, coarse aggregates. Effective use of fly ash with the partial replacement of aggregates played an important role in the development of Self Compacting Concrete (SCC), and it possessed various advantages when compared with conventional concrete. Increasing popularity of Self Compacting Concrete in the modern era of facing shortage in raw materials demands a sustainable method for the development of SCC. The major properties of Self Compacting Concrete include little resistance, ease in placing and compacting under its own weight without vibration, effort and it has to be handled without segregation or bleeding. This paper discusses about an experimental investigation carried out to study the effect of adopting Portland Pozzolana Cement (PPC – Ultratech ) and Sulfonated Napthalene Farmaldehyde Condensate (SNF) (Rheobuild 1125 BASF, based) super plasticiser on both workability and mechanical properties of Self Compacting Concretes (SCCs). A number of concrete specimens are prepared in the laboratory by adopting various proportions of super plasticizer content and water cement ratios. The basic mix design was performed using IS 456-2000 and guidelines given in ACI 211 4R- 2008 preferred for the proper mix design of Self Compacting Concrete. Slump flow test and J- Ring test are preferred for assessing the workability characteristics of Self Compacting Concrete. 3-day and 7-day compressive strengths are determined by following standard cube compression testing procedure. The basic objective of this study was to design a Self-Compacting Concrete of target characteristics of 20 MPa compressive strength at 7 days and a slump flow of 500 mm, slump retention for 30 min and J – ring slump loss of less than 50 mm.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Self Compacting Concrete (SCC); Compressive Strength; Slump flow; Slump Retention
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 11 Feb 2016 16:14
Last Modified: 11 Feb 2016 16:14
URI: http://eprints.manipal.edu/id/eprint/145317

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