The combination of the lignocellulosic residue sugarcane bagasse and poultry litter as carbon and nutrients sources, respectively, in organic permeable reactive barriers for remediation of metal laden acid mine drainage has not yet been extensively tested and may be promising based on chemical composition. This system is being tested in the laboratory b...
View ArticleIn the design of flexible retaining walls supported by several levels of struts, apparent design diagrams are frequently used, particularly to predict the loads on the struts. In the case of sandy soils, the traditional design diagrams do not consider water table. The present work deals with apparent design diagrams for cases considering water table. A ...
View ArticleThe paper deals with the bidirectional test, aiming at interpreting its results, showing the factor that governs the upward movement and presenting approximate formulas to find the equivalent load-settlement curve of a conventional compressive test. The factor is the product c’.k = (1 – c
The paper revisits and updates two expedite methods used to identify the occurrence of collapsible soils. The methods were proposed by Gibbs (1961) and de Mello (1973) and have in common the assumption that collapsible soils are usually low density soils characterized through the relative compaction at natural condition, ratio between in situ&... View Article
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