Cais aditivadas com pozolana e cimento portland.

Abstract

In Brazil, traditional agglomcrates such as hydratcd lime and Portland cements have been used nowadays these product are of high cost due to the price ofenergy used for their manufacture and transport. Intermediary agglomcrates such as pozolanic limes and hidraulic limes are made in contemptible scale. For this reason the study of materiais that have a global consumption of lovv energy and that can be produced from local raw material is of big importance for the decrease of the construction cost and this is cssential for country such as ours because of its enormous lack of habitation. In this work the performance of traditional agglomcrates is compared with the one of the alternative agglomcrates product artificially from the mix of scveral percentages of lime/pozolana (750, 800, 850, 900 and 950 °C): lime/pozolanic Portland cement; lime/commom Portland cement and lime/pozolanic Portland ccment/pozolana (800 °C). Through the determination of the resistance to the simple compression in mortar standardized by the ABNT. The results show that the alternative agglomcrates have mcchanical behaviour superior to the one of the hydratcd limes and almost cqual to in proportions to the ones of the Portland cements and that they can be used to substitute the Portland cements when high mcchanical resistances must not be used.