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42
Vol

Biodegradation of Biodiesel in Laboratory and Field in a Clayey Residual Soil

July 08, 2019

This study compared the process of biotic and abiotic degradation of biodiesel in a clayey soil in a laboratory environment (ex situ) and infield environment (in situ). The experiment carried out ex situ had controlled temperature and humidity, while the experiment in situ was directly influenced by external factors such as rainfall and temperature. The...

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42
Vol

Geological-Geotechnical Characterization of Slopes Belonging to the Serra do Mar Paranaense, Brazil

July 08, 2019
An extensive campaign of field and laboratory tests were performed on samples of residual soils and colluviums present in the morphoscultural sub-unit comprising Serra do Mar Paranaense located in Southern Brazil. The geotechnical investigations included the physical characterization, in situ hydraulic conductivity and the mechanical behavior of the soils, by me...
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42
Vol

Geotechnical Behavior and Soil-Fiber Interaction of Clayey Soil Mixed with Randomly Dispersed Coconut Fibers

July 08, 2019
This study aims to experimentally analyze the influence of the addition of different amounts of short coconut fibers on the geotechnical properties of tropical clay soil. Samples with 0, 0.5, 1, and 2 wt% of fiber in regard to the dry weight of soil were analyzed. Compaction, direct shear, compressibility, hydraulic conductivity, scanning electron microscopy (SE...
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42
Vol

Soil Elastic Modulus Determined by Ultrasound Tests

June 11, 2019

The elastic constants obtained through conventional destructive (triaxial and resilience) tests can present great variability, even for soils with the same classification. Thus, a test is necessary to determine the elastic constants of soils in a reliable and replicable way. The ultrasonic technique is used to characterize rock and several construction ...

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