Journal article

Calcium carbide residue: Alkaline activator for clay-fly ash geopolymer

Chayakrit Phetchuay, Suksun Horpibulsuk, Cherdsak Suksiripattanapong, Avirut Chinkulkijniwat, Arul Arulrajah, Mahdi M Disfani



Calcium Carbide Residue (CCR) and Fly Ash (FA) are waste by-products from acetylene gas and power plant production, respectively. The liquid alkaline activator studied in this research is a mixture of sodium silicate solution (Na2SiO3), water and CCR. The primary aim of this research is to investigate the viability of using CCR, a cementitious waste material, as an alkaline activator and FA as a precursor to improve the engineering properties of a problematic silty clay to facilitate its usage as stabilized subgrade material. The influential factors studied are Na2SiO 3/water ratio, FA replacement ratio, curing time, curing temperature and soaking condition for a fixed CCR content of 7%. Str..

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Awarded by Thailand Research Fund under the TRF Senior Research Scholar program Grant

Funding Acknowledgements

This work was financially supported by the Thailand Research Fund under the TRF Senior Research Scholar program Grant No. RTA5680002 and by Suranaree University of Technology under SUT-Ph.D. program. The financial support from the Higher Education Research Promotion and National Research University Project of Thailand, Office of Higher Education Commission as well as the assistance for the use of facilities and equipment from Suranaree University of Technology are also very much appreciated.