Caracterização da cinza de eucalipto para uso em pavimentos flexíveis

Abstract

In Brazil, road transport is the main mode used in the movement of people and cargo, and there is still a considerable volume of roads to be paved, putting at risk the scarcity of materials used. Considering the amount of waste generated by industries in the burning of wood for energy generation that are unsustainably discarded, alternatives are sought for the destination of this material. The general objective of this work was to evaluate the use of wood ash in paving, through its characteristics presented from the granulometric analysis and physical characterization of the material, also verifying the plasticity index and the compaction results. The material characterization results, through the determination of the specific mass, did not meet the indices required by the standard and through the granulometry, the predominant material was identified as fine, being 25.36% of fine sand. The determination of the plasticity index of the ash was not possible due to its characteristics and its behavior during the test, classifying it as a non-plastic material. From the compaction graph curve, it was observed that the material did not present adequate characteristics for the determination of optimal moisture and maximum dry density. Wood ash, when evaluated in isolation, does not have the necessary characteristics of a material used in paving.