Propriedades de resistência de uma argila orgânica do Recife.

Abstract

The work presented in this dissertation covers the measurements of in situ and laboratory resistance properties of a soil that is part of the subsoil of the city of Recife and is commonly known as "organic clay of Recife". the in situ resistance measurements were performed using three types of equipment: the Vane Field Test, the Deep Souding and the Dynamic Penetrometer (I.R.P.). the resistance in the laboratory was measured with the Vane Test in samples which were undeformed and with samples dented in the laboratory. The physical properties were also determined in the laboratory allowing the characterization of the organic clay. This work shows that the non drained cohesion, static penetration and dynamic penetration vary very little with depth. The resistance measured with the Vane had an average value of 0.476 kg / cm2. The static penetration values ​​ranged from 5kg / cm2 to 7kg / cm2 and the dynamic penetration values ​​ranged from N = 1 to N = 2. Using linear regressions we analyzed correlations between resistance parameters measured in this investigation and it was verified that there are no statistical correlations although some regression equations agree very well with the data reported in the bibliographic review.