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43
Vol

Pullout Testing of Soil Nails in Gneissic Residual Soil

October 01, 2019
Soil nailing has proved to be an efficient and cost-effective stabilization technique, consisting in installing passive reinforcement in the soil that provides the material with tensile and shear strengths. The fundamental parameter in analyzing the mechanical behavior of this type of structure is the frictional resistance of the soil-nail interface, denominated...
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43
Vol

Physicochemical Modifications in Geomaterials and Their Leachates Extracted from Acidic Attack

April 17, 2020
Exposure of geomaterials to acid leachates may cause chemical species desorption, mineral dissolution, and metal leaching. This study seeks to understand the changes in the physicochemical composition of liquid extracts resulting from the exposure of four different geomaterials (uniform fine sand, basalt residual soil, kaolin, and bentonite) to a blank solution ...
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43
Vol

Sustainable Remediation: A New Way of Thinking the Contaminated Sites Management

January 29, 2020

Within the evolution in the remediation field, the traditional approach to contaminated sites management, based almost exclusively on the risk, time, cost, and decontamination efficiency, is gradually being replaced by the concepts of sustainability. The most recent focus is the incorporation of the term “sustainable remediation (SR)&rdquo...

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43
Vol

Sample Quality Assessment: Comparison Between Brass Shelby Tubes and Reinforced PVC Tube Samplers

May 20, 2020

Laboratory tests were conducted in soft clay deposits at the Macae/RJ airport in order to obtain geotechnical parameters for a new runway design. The quality of soil samples, extracted with both brass tube (thin-walled) and reinforced PVC tube (thick-walled) soil samplers, was assessed. Both samplers were 700 mm long, with a 7 degree chamfered cutting e...

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