Title: Investigating Strength Properties of Geopolymer Concrete with Quarry Dust

Author(s): A. Muthadhi and V. Dhivya

Publication: Materials Journal

Volume: 114

Issue: 3

Appears on pages(s): 355-363

Keywords: Class C fly ash; compressive strength; geopolymer concrete; quarry dust

DOI: 10.14359/51689674

Date: 5/1/2017

Abstract:
To address the environmental constraints due to cement production and sand scarcity, strength properties of high-calcium fly ash (CFA)-based geopolymer concrete with quarry dust as fine aggregate is explored in this paper. River sand was replaced with quarry dust from 0 to 100% by mass. Sodium hydroxide solution with 8M and 14M concentration, alkaline liquid-to-fly ash ratios of 0.50 and 0.60, and three curing regimes—oven curing, ambient curing, and external exposure curing—were used. The results indicated that geopolymer concrete achieved comparably equal strength to that of the reference concrete mixture at a 100% quarry dust level. External exposure and ambient curing can be practiced to attain comparable strength properties of geopolymer concrete with quarry dust as fine aggregate. Experimental values of split tensile strength of geopolymer concrete with quarry dust follows good relations with various empirical equations.