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espanolEste trabajo presenta los resultados de la evaluacion de propiedades de pastas de cemento comercial (CPC), mezcladas con ceniza volante (FA) y escoria de alto horno (GBFS). Inicialmente un total de 30 combinaciones fueron evaluadas en terminos de resistencia a la compresion para establecer las proporciones optimas de las materias primas. Despues de esto, cuatro mezclas optimizadas fueron caracterizadas durante el proceso de fraguado y endurecimiento. Se realizaron ensayos electroquimicos en cilindros de concreto elaborados con los cementantes y con una varilla de acero de construccion embebida en su interior. Con el objetivo de evaluar el comportamiento frente a la corrosion se estudiaron aspectos termodinamicos y cineticos. Los resultados mostraron que cementos comerciales mezclados con ceniza volante y escoria de alto horno, como los usados en esta investigacion, presentan menor resistencia mecanica y a la corrosion que un cemento comercial. EnglishThis paper presents the findings of the research properties evaluation pastes of commercial cement (CPC), mixed with fly ash (FA) and granulated blast furnace slag (GBFS). Initially, the sample of 30 combinations were evaluated in terms of compressive strength to establish the optimal proportions from raw material. After that, four optimized blends were characterized during the setting and hardening process. Electrochemical tests were performed on concrete cylinders samples prepared with cementitious materials and a structural steel rod placed in the center of the specimen. With the objective to evaluate the performance before corrosion, thermodynamic and kinetic aspects were taken into consideration. The findings showed that commercial cements blended with fly ash and blast furnace slag as the ones used in this research presents a decreased behavior in mechanical and corrosion strength regarding to CPC.

Efecto de la incorporación de ceniza volante y escoria de horno alto en el comportamiento electroquímico de concretos de cemento comercial