Portable cat scanner applied to collapsible soil studies

The soil collapse is causing huge losses to the grain producers of Mate Grosso State. ks a result of this phenomenon many silos are showing signals of sinking. The Soil collapse means a sudden reduction of soil volume, when submitted to a stress, due to a rise on its soil moisture. The collapse occurs when the soil is non-saturated and its structure is metastable. In this work, computerized tomography(CT) technique was applied to measure the reduction of voids caused by the soil collapse. The equipment used for these studies is a portable tomograph scanner developed at the Instrumentation Center of EMBRAPA/CNPDIA - Sao Carlos SP.