Utilization of bio-chars from sugarcane bagasse pyrolysis in cement-based composites

摘要

In this study, the effect of bio-chars from sugarcane bagasse pyrolysis on the thermal and mechanical properties of cement-based composites was highlighted. The sugarcane bagasse was submitted to a thermochemical conversion process (slow pyrolysis) to obtain bio-chars. Cement-based composites were elaborated using the slurry dewatering method. The results showed that the bio-chars present a rough structure, a lower content of polysaccharides and lignin than the sugarcane bagasse. Moreover, the bio-chars absorb 36% less water than the sugarcane bagasse and the use of 2% by weight of bio-chars improves the hydration of cement. Finally, the thermal and mechanical properties of cement-based composites showed that the bio-chars are promissory materials for the elaboration of insulating building materials.