Author/Authors :
Soleimani، M. A. نويسنده School of Materials Science and Engineering, Iran University of Science and Technology, Tehran, Iran. , , Naghizadeh، R. نويسنده School of Materials Science and Engineering, Iran University of Science and Technology, Tehran, Iran. , , Mirhabib، A. R. نويسنده School of Materials Science and Engineering, Iran University of Science and Technology, Tehran, Iran. , , Golestani-Fard، F. نويسنده - Department of Materials Engineering, Iranian University of Science and Technology (IUST), Tehran, Iran Golestani-Fard, F.
Abstract :
Metakaolinite-based geopolymer has been synthesized at about 25 °C from metakaolin which has been
calcined in different temperatures (600-900 °C) and different Na2O/SiO2 ratio activator (0.3-1.1). Compressive
strength and microstructure of cement pastes after 7-28 days curing at ambient temperature were measured.
Compressive strength tests on the samples showed that the sample made with calcined kaolin at 700 °C and molar ratio
of 0.6 has highest average compressive strength of 32 MPa after 28 days of curing. Evaluation of infrared spectroscopy
(FTIR) and microstructure showed that geopolymer cement developed and new molecular structure established.
