Open AccessGeopolymer mortars based on natural zeolite
Author(s) -
Aleksandar Nikolov,
Borislav Barbov,
Elena Tacheva
Publication year - 2021
Publication title -
spisanie na bʺlgarskoto geologičesko družestvo/spisanie na bʺlgarskoto geologičesko družestvo
Language(s) - English
Resource type - Journals
eISSN - 1314-8680
pISSN - 0007-3938
DOI - 10.52215/rev.bgs.2021.82.3.25
Subject(s) - clinoptilolite , geopolymer , materials science , mortar , zeolite , ultimate tensile strength , metakaolin , microstructure , composite material , fourier transform infrared spectroscopy , adhesive , compressive strength , chemical engineering , chemistry , biochemistry , layer (electronics) , engineering , catalysis
Geopolymers based on Bulgarian natural zeolite (clinoptilolite) were synthesized using alkaline activators in order to prepare plaster/render mortar. The influence of the alkali concentrations of the activator solution was examined in regard to tensile strength and adhesion to concrete. Microstructure of the obtained geopolymer pastes was analysed by XRD, FTIR, SEM. The results showed adhesive strength to concrete up to 3.6 MPa and tensile strength up to 5.44 MPa. The present study shows a promising potential of the geopolymers as coating material for concrete.