Effect of adding blast furnace slag to composites with mosso bamboo

Abstract

The objective of this research was to evaluate the effect of the addition of different blast furnace slag contents to composite with mosso bamboo (Phyllostachys pubescens), in order to verify the compatibility between biomass, Portland cement and high-oven. The degree of compatibility was determined by the study of the heat of hydration in the first 24 hours and the resistance to axial compression after 14 days of the composites formed by cement, biomass and blast furnace slag. The results of the inhibition tests showed that the 50% percentage of slag was the best for reducing the alkalinity of the cement matrix and, consequently, increasing the compatibility between bamboo biomass and Portland cement. For the compressive strength, the contents of 25 to 70% showed improvement of this property, demonstrating, therefore, that the addition of blast furnace slag increased the compatibility between cement and bamboo biomass. It is concluded that this can be used for the preparation of cement-biomass composites.