Efeito do filler de calcário como substituinte parcial do cimento portland em argamassas de alvenaria

Abstract

The growth in the production volume of a country's extractive industry represents a contribution of this sector to GDP. On the other hand, extractive activity has led to production of waste, which is normally disposed of without any use. With the raising of citizens' awareness of the environmental problems arising from productive activities, society in general and research institutions in in particular, have been challenged to find answers to these problems that sometimes go through the study of ways to reuse these residues. It is in this context that the present work was carried out, which aims to analyze the feasibility of using the residues generated in the exploitation of limestone as material alternative for the production of mortars. In the present study, four mortar compositions were produced, replacing partially Portland cement with a limestone filler content of the order of 10, 20, 25 and 30% pasta. After the preparation of the mortars, the test pieces were molded, which were then cured for 7, 14 and 28 days in water. The test pieces were subjected to the resistance to flexion, compression and water absorption. According to the results, it was found that the cement can be replaced by the limestone filler without significant damage to the technological properties of mortars, when added up to contents of the order of 20% of mass. Keyword: Mortar, Limestone Filler, Waste, Limestone Rock.