Silika Aerojel katkılı Alkali-Aktive Edilmiş Uçucu Kül Harçlarının Mekanik, Por Yapısı ve Mikro Yapı Özellikleri.

Inclusion of silica aerogels in cement matrix can lead to an enhancement in thermal and acoustic properties of cement -- based materials due to the high porosity values of silica aerogel particles. Despite their high porosity values, silica aerogel particles can also show sufficient mechanical performance under stress. In this study, mechanical, pore structure and microstructure properties of alkali -- activated fly ash mortars containing a small amount of silica aerogel powder (0.25% and 0.50% of binder, by weight) were investigated. The results obtained from the experimental study reveal that the compressive toughness and compressive post-peak toughness capacities of fly ash mortars with an average compressive strength of 20 MPa could increase by about 27% and 70%, respectively. Toughness development obtained via the change in the micro and capillary pore formation in the pore structure of the mortar samples presents an innovative design idea for the production of silica aerogelincorporated mortar blocks with improved deformation behavior under equivalent compressive stress. [ABSTRACT FROM AUTHOR]