The accurate performance of instrumentation is fundamental to the adequate use of the results obtained from
analyzing the behavior of constructions of embankments on soft soils. When evaluating embankment behavior, the
geotechnical instrumentation for pore pressure and vertical and horizontal displacements measurements can be an&...
The use of prefabricated vertical drains with vacuum preloading and surcharge preloading is now common practice and is proving to be one of the most effective ground improvement techniques known. The factors affecting its performance, such as the smear zone, the drain influence zone, and drain unsaturation, are discussed in this paper. In order to evalu...
View ArticleThe energy efficiency in SPT is generally evaluated based on the nominal drop height. Measurements of the
drop height in systems different from those used in Brazil have shown that the drop height values can be significantly
different from the nominal ones, inclusively in those systems where lifting-releasing operations are autom...
This technical note presents some preliminary results obtained with the use of hydrophobic and hydrophilic
tensiometers to measure liquid pressures in three-phase systems (air-NAPL-water). The porous tips of the hydrophobic
tensiometers underwent a surface treatment known as silanization. The silanized tensiometers demonstrated l...
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