Estudo de dosagem de concreto para traços ricos com agregados da região de João Pessoa

Abstract

Concrete is the most used material in the civil construction due to its practicality and its effiency. However, since the aggregates have a high variability in the Brazilian regions, it is necessary to study these materials for each locality. Thus, this research consisted in laboratory tests to evaluate the behavior of concrete with low content of aggregates (m = 3.5) and with different mortar contents by the method of measurement of Helene and Terzian (1993) in the metropolitan area of João Pessoa/PB. Initially, the aggregates were characterized by granulometric test, specific mass and moisture content, in order to obtain a behavioral analysis when increased to concrete. Therefore, 6 traces with 5 ± 1 cm and more 6 for 7 ± 1 cm slumps were measured to verify the main concrete parameters such as compressive strength, water/cement content, mortar content, slump and cement consumption. The results provided values that indicated an ideal mortar content of 0,58.