2025, Volume 71(75), Issue 3 (September), pp. 57 - 70

Unconventional Trend in Adopting the New “One-Part” Mixture Geopolymer for Construction Applications

LUCIAN PĂUNESCU, National University of Science and Technology “Politehnica”, Faculty of Applied Chemistry and Materials Science, Research Center for Environmental Protection and Eco-Friendly, Bucharest, Romania, lucianpaunescu16@gmail.com
ADRIAN IOANA, National University of Science and Technology “Politehnica”, Faculty of Materials Science and Engineering, Bucharest, Romania
ENIKÖ VOLCEANOV, National University of Science and Technology “Politehnica”, Faculty of Engineering in Foreign Language, Bucharest, Romania
BOGDAN VALENTIN PĂUNESCU, Consitrans SA, Bucharest, Romania

pages 57 - 70   Download
DOI: 10.5281/zenodo.17357277

Abstract
The work aimed at producing “one-part” geopolymer composite material using coal fly ash and granulated blast furnace slag as alumina-silicate precursors, sodium carbonate as a solid alkali activator, and sodium lignosulphonate as a water-reducer superplasticizer, constituting a dry powder mixture, to which water was added later. This preparing way of the geopolymer is an alternative version to the traditional “two-part” geopolymer using liquid alkaline activation and is mainly suitable for in-situ construction applications. The results of the current experiment showed good thermal insulation properties, the density and heat conductivity values being quite low as well as quite high levels of compression and flexural strength, early strength values after only 7 days being high considering the final mechanical resistance values after 28 days.
Keywords: solid alkali activator, “one-part” geopolymer, fly ash, slag, sodium carbonate