Laboratory Parameters of a Soft Soil Deposit in Macaé, Brazil

Abstract

Abstract. This article presents the geotechnical parameters from a laboratory investigation of a Quaternary sedimentary deposit located in a low-lying area of Macaé, Rio de Janeiro (RJ), Brazil, and, when possible, compares these parameters with those from field tests and other Brazilian studies on soft soils. The deposit is described in terms of its geological origin, physical, chemical and mineralogical characterization, compressibility, consolidation and strength. To that end, a series of laboratory tests were performed, including physical, chemical and mineralogical characterization, conventional and special consolidation, and triaxial tests. The results obtained made it possible to determine the geotechnical properties considered essential for improving knowledge on the behavior of this layer. Differences between laboratory and field parameters were observed, and the geotechnical characteristics of the Macaé deposits were found to be similar to those of other Brazilian soft soils.

Parâmetros Geotécnicos de um Depósito de Solo Mole em Macaé/RJ

“…Ainda que a cidade de Macaé seja uma importante base para as operações de petróleo offshore, são escassas as informações geotécnicas sobre os depósitos de solo mole. Destaca-se, neste contexto, o trabalho feito por Póvoa et al (2018).…”