Evaluación de la reacción al fuego de morteros de cemento con adiciones de ceniza de cáscara de arroz derivadas de desechos agrícolas pretratadas con agua y ácido acético

Abstract

Abstract: This research addresses the sustainable use of agricultural waste to improve the properties of cement mortar. The main objective of this study is to analyze the effects of rice husk ash (RCA) pretreatment on the fire resistance and mechanical properties of mortars, contributing to sustainable construction and fire safety. A theoretical framework is developed that describes the background on the fire resistance of traditional mortars, the impact of supplementary cementitious materials (SCMs), and the behavior of pretreated ash. The methodology included the processes of raw material procurement, applied pretreatments, calcination, and mixture preparation with 10% cement replacement. Tests were conducted to evaluate particle size distribution, compressive strength, physical properties, and fire behavior. The study concludes that mortars containing CCA showed favorable performance, improved fire resistance, thermal stability, and reduced porosity, confirming their viability as a supplementary cementitious material, providing a sustainable approach to construction by utilizing organic waste.