Factors Affecting the Compressive Strength of Heat-Cured Geopolymer Concrete with Fly Ash and Slag

The IUP Journal of Structural Engineering, Vol. VIII, No. 4, October 2015, pp. 23-36

Posted: 10 Jul 2017

See all articles by Sonal Thakkar

Sonal Thakkar

Nirma University

Darpan Bhorwani

MSquare Design & Project Management

Date Written: December 22, 2015

Abstract

Sustainable development and preservation of environment for future generation are the need of the hour. It is very much essential to have an alternative to cement due to its disadvantage of large emission of carbon dioxide into atmosphere and highly energyintensive process. Geopolymer concrete is an alternative to conventional concrete. This paper presents a study carried out on the combination of industrial waste fly ash and slag as source materials and the factors affecting the compressive strength of oven cured specimen. The ratio of alkaline liquid to source material was kept at 0.4, the rest period at 1 day and temperature at 90 °C. The density of geopolymer concrete was kept approximately equal to 2400 kg/m3 equivalent to conventional Ordinary Portland Cement (OPC) concrete. It was found that compressive strength of geopolymer concrete increased with increase in curing duration. Increase in strength was also observed with increase in molarity and increase in alkaline solution ratio. Also, if dosage of superplasticizer increased, workability also increased, and it led to increase in compressive strength.

Keywords: Fly ash, GGBFS, Alkaline liquid, Compressive strength

Suggested Citation

Thakkar, Sonal and Bhorwani, Darpan, Factors Affecting the Compressive Strength of Heat-Cured Geopolymer Concrete with Fly Ash and Slag (December 22, 2015). The IUP Journal of Structural Engineering, Vol. VIII, No. 4, October 2015, pp. 23-36, Available at SSRN: https://ssrn.com/abstract=2707050

Sonal Thakkar (Contact Author)

Nirma University ( email )

Sarkhej-Gandhinagar Highway
Gota
Ahmedabad, Gujarat 382 481
India

Darpan Bhorwani

MSquare Design & Project Management ( email )

3, First Floor, Prem Dhan Apartments
Opp. Sub Jail, Near Bus Depot Road, Navsari-396445
Gujarat
India

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