Mechanical and microstructural characterization of geopolymer synthesized from low calcium fly ash | Zendy

Sabina Kramar | Zendy; Vilma Ducman | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Mechanical and microstructural characterization of geopolymer synthesized from low calcium fly ash

Author(s) -

Sabina Kramar,

Vilma Ducman

Publication year - 2013

Publication title -

chemical industry and chemical engineering quarterly

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.189

H-Index - 26

eISSN - 2217-7434

pISSN - 1451-9372

DOI - 10.2298/ciceq130725042k

Subject(s) - fly ash , geopolymer , compressive strength , materials science , fourier transform infrared spectroscopy , scanning electron microscope , sodium silicate , porosity , composite material , flexural strength , porosimetry , chemical engineering , porous medium , engineering

This study deals with the mechanical and microstructural characterization of geopolymers synthesized from locally available fly ash. A low calcium fly ash was activated using a sodium silicate solution. Samples were characterized by means of flexural and compressive tests, Fourier Transform Infrared (FTIR) spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). Porosity and pore size distributions were identified using mercury intrusion porosimetry and gas sorption. The compressive strength of the produced geopolymers, which is in the range of 1.6 to 53.3 N/mm2, is strongly related to the water content as well as SiO2/Na2O mass ratio of an alkali activator. The compressive strength significantly increased with decreases in the water content and increased silicon concentration used for the synthesis of geopolymers

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research