Application of Response Surface Methodology for Optimization of Alkali Activated Slag Concrete

Bhookya Giridhar Ramkumar , Suresh Barmavath , Kurapati Nagaraju

Sodium hydroxide, Sodium silicate, Fly ash, GGBFS, Steel slag,

Alkali-activated aluminosilicates, commonly known as "geopolymers", are being increasingly studied as a potential replacement for Portland cement. These binders use an alkaline activator, typically alkali silicates, alkali hydroxides or a combination of both along with a silica-and-alumina rich material, such as fly ash or slag, to form a final product with properties comparable to or better than those of ordinary Portland cement. The research focuses on the strength properties of alkali activated slag (AAS) and fly ash based geopolymer concrete called alkali activated slag concrete. It is concluded that AAS and fly ash based alkali activated slag concretes can exhibit comparable strength to OPC and slag-blended OPC concretes. The cost and ecological analysis of alkali activated slag concretes, if designed rationally by careful selection of ingredients and their proportions of Alkali Activator Solution (AAS), can have lower contents of ecologically important factors such as Embodied Energy (EE) and Embodied Carbon dioxide Emission (ECOE) and thus lower carbon footprint, compared to conventional concretes (CCs). The strength properties of alkali activated slag concretes are compared by using Response surface methodology (Minitab software).The basic properties of alkali activated slag concretes, namely compressive strength, flexural strength and split tensile strength which in turn depends on the process of parameters, such as amount of fly ash content ,dosage of sodium oxide and activator modulus. The relationships of these input parameters with the properties of the Geopolymer concrete are complex in nature. Design of experiments (DOE) with response surface methodology was used to develop the said input–output relationships.

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"Application of Response Surface Methodology for Optimization of Alkali Activated Slag Concrete ", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.2, Issue 3, page no.35 - 47, March-2017, Available :https://ijsdr.org/papers/IJSDR1703007.pdf

Volume 2 Issue 3, March-2017

Pages : 35 - 47

Paper Reg. ID: IJSDR_170058

Published Paper Id: IJSDR1703007

Downloads: 000347176

Research Area: Engineering

Country: -, -, India

Published Paper PDF: https://ijsdr.org/papers/IJSDR1703007

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR1703007

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

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