Quick search
Go!

HIGH STRENGTH-GEOPOLYMER BUILDING MATERIAL


LUCIAN PAUNESCU *1, ENIKO VOLCEANOV 2, 3, ADRIAN IOANA 3, BOGDAN-VALENTIN PAUNESCU 4
1. Cosfel Actual SRL, 95-97 Calea Grivitei, sector 1, Bucharest 010705, Romania
2. Metallurgical Research Institute SA, 39 Mehadia street, sector 6, Bucharest 060543, Romania
3. Faculty of Science and Materials Engineering, University “Politehnica” of Bucharest, 313 Independence Splai, sector 1, Bucharest 060032, Romania
4. Consitrans SA, 56 Polona street, sector 1, Bucharest 010494, Romania
* Corresponding author, email: lucianpaunescu16@gmail.com

Issue:

JESR, Number 4, Volume XXVIII

Section:

Issue Nr. 4 - Volume 28(2022)

Abstract:

New geopolymer concrete with high mechanical strength - 58.9 MPa after 28 days of curing - was experimentally made under environmental friendly and economic conditions. The high-strength-geopolymer is baed on coal fly ash and building concrete waste as geopolymer materials suitable for completely substituting the cement in concrete structure. The alumino-silicate geopolymer materials with binder role were activated in liquid alkaline medium (sodium silicate and sodium hydroxide) for facilitating the polymerization reaction that turns the alumino-silicate wastes into geopolymer concrete. The use for the first time in this experiment of recycled building concrete waste from demolition is the work originality.

Keywords:

geopolymer, fly ash, recycled concrete waste, alkaline activator, polymerization reaction, compressive strength.

Code [ID]:

JESR202204V28S01A0012 [0005512]

Note:

DOI:

Full paper:

Download pdf