Efeito do teor de água e da pressão aplicada na densidade do solo.

Abstract

The water content effect applied pressure were analyzed on “Terra Roxa Estruturada”, on classes of aggregates of 0 to 2.5 mm; 2.5 to 5.1 mm; 5.1 to 9.4 mm and 9.4 to 19.3 mm. There has been used water content rates of 20%, 24.5%, 29% and 30.5%. The water content rate of 29% ± 5% is the corresponding water content in the maximum compaction in Proctor’s trial. Soil density of massives formed through the compaction of the aggregates have been evaluated. The experiment has been conducted in laboratory conditions with uniaxial compression test and a hydraulic cylinder press, loading 50 kN, precision 0.03% were operated. Data have been registered by an analogical / digital converter CAD12/32-24. The system has been connected to a AT 386 microcomputer to store and processing data. For all sizes of aggregates the soil density increased with the applied pressure as well as water content. The most variations have been occurred at initial pressures.