Improving the reactivity of a former ground sugarcane bagasse ash produced by autogenous combustion through employment of two different additional grinding procedures

Studies on reactivity of sugarcane bagasse ash (SCBA), obtained by an autogenous combustion process, with low loss ignition and three different particle sizes were carried out (SCBA-1, SCBA-2 SCBA-3). The ashes characterized their size distribution, chemical composition, X-ray diffraction (XRD), thermogravimetric analysis (TGA) field emission scanning electron microscopy (FESEM). lowest was SCBA-3, followed SCBA-2, which both finer than SCBA-1. Calcium hydroxide/SCBA blends assessed means electrical conductivity (Lc), TGA FESEM. Portland cement/SCBA pastes analyzed through isothermal calorimetry, TGA, FESEM compressive strength. Results showed that SCBA (SCBA-3) presented highest reactivity, resulted in statically significant better strength control paste (with only cement) after 28 days curing. improvement employing SCBA-3 respect to SCBA-1 17.9 14.1%, respectively, 180