Effects on Geopolymer Mortars of The Blast-Furnace Slags Obtained from Different Regions
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DOI:
https://doi.org/10.5281/zenodo.14188723Keywords:
Geopolymer Mortar, Thermal-Water Curing, Fly Ash, Blast Furnace Slag, Alkaline ActivatorAbstract
Geopolymer concrete/mortar production holds great promise for today's construction industry.
In this study, microstructure and compressive and flexural strength analyses of blast furnace slags obtained
from different enterprises were carried out. For this purpose, fly ash obtained from the Sivas/Kangal
Thermal Power Plant and ground blast furnace slag types obtained from Bolu, and Iskenderun iron and steel
industry were used as main binders in different proportions. As alkaline activators were prepared NaOH
and Na2SiO3 solutions with three different molar ratios (8M, 10M, and 12M). The results show that the
highest compressive strength was 84.7 MPa in the 95BFS1-5FA sample obtained with Bolu blast furnace
slag compared to Iskenderun blast furnace slag. Besides, ıt was founded at 75 °C thermal curing
(particularly the 8M and 95BFS5FA samples) had the highest values of flexural tensile strength (9.3 MPa),
while those at underwater cured had the lowest values (6.1 MPa).
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