Abstract
This study focuses on the residual mechanical strengths and microstructure of nano-calcined montmorillonite clay (NCMC) cement mortars at high temperatures. NCMC was prepared via thermal activation of nano-clay, and the produced mortars with 0%, 1%, 3%, and 5 wt% NCMC replacements were subjected to temperatures of up to 900 °C. The fire-resistance properties of the produced mortars and their role were analysed through thermogravimetric analysis, X-ray diffraction, and scanning electron microscopy.The results revealed that the use of thermally treated NCMC reduced the density and widths of microcracks, improved the mass-loss behaviour, reduced the amount of calcium hydroxide crystals, and strengthened the matrix, which explains their higher residual mechanical strengths.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
