Abstract With the potential for a decline in fly ash (FA) production over time, due to phasing down of coal fired power plants, alternative supplementary cementitious materials need be identified. The efficiency pulverised glass powder (PGP) was studied its reactivity and capacity inhibiting alkali-silica reaction (ASR) that results from utilisation recycled as fine aggregate (sand) replacement...

Upcycling and reclaiming of low quality or stored coal combustion fly ashes could enable to tap into a voluminous resource supplementary cementitious materials (SCMs) for low-carbon blended cements. Low reactivity are usually either too crystalline coarse. Beneficiation treatments coarse comprise size classification milling processes extract produce fine fractions higher pozzolanic reactivity. ...

Abstract Spent fluorescent lamps glass (SFLG) waste, manually and mechanically processed in a waste treatment plant, was used to partially replace up 50 wt% Portland cement (PC). Both types exhibited similar pozzolanic activity. The mortars containing 35 wt% SFLG met the specifications for other materials (e.g. fly ash) and, after 90 curing days, their compressive strength values were or higher...

Abstract Aim of study was to verify the effect temperature on pozzolanic reactivity thermally activated attapulgite and sepiolite samples. Activation temperatures were selected: 650, 700 750 °C for 800, 825 850 sepiolite. Content reactive SiO 2 Al O 3 after thermal treatment amount Ca(OH) consumed in reaction measured. It should be noted that a higher activation improves The upper limit increas...

Nano-silica, one of the substances boosting the field of nanomaterials, can be produced by dissolving olivine in acid. The dissolution of olivine is a convenient alternative route to the existing methods of nano-silica production (neutralization of sodium silicate and flame hydrolysis) because the olivine dissolution is a low temperature process making this method cheaper and greener. Furthermo...

The physical, chemical, and mechanical properties of mortars and bricks used in the historical building that was erected at Myra within the boundaries of Antalya Province during the Roman time were investigated. The sample picked points were marked on the air photographs and plans of the buildings and samples were photographed. Then petrographic evaluation was made by stereo microscope on the p...

the present work has been performed to eliminate sewage dry sludge of alborze city wastewater treatment plant by using them as fine aggregate in concrete. on this basis, at first the selected dry sludge was analyzed for xrd and xrf for crystalline phases and chemical composition, respectively. the results showed that more than 50% of the sludge is formed of sio2 and it had more than 20% organic...

Silica fume (SF) is an important component for manufacturing high performance concrete (HPC), owing to its superb pozzolanic reactivity and physical filling effects. However, application of SF in concrete may cause potential hazards issues. Although using SF in slurry form can somehow reduce the potential biotoxicity, the long-term stability and status of the SF particles within cementitious ma...