All over the world, ballasted railway tracks form one of the major transportation networks designed to provide heavy haul freight and passenger traffic. However, large cyclic loading from heavy axle trains operating at high speeds often causes excessive deformation ...

<p>Filters in embaknment dams are composed of specifically-designed entities (zones) of coarser-grained soils placed at specifically-targeted locations within or adjacent to the dam structure. Filters are designed and constructed to achieve specific goals ...

<p>Mechanically stabilized earth (MSE) walls reinforced by geogrids and geotextiles have seen a tremendous growth over the past thirty years. However, along with this growth has come numerous failures consisting of excessive deformation and, in some cases, ...

Geosynthetics have become well established construction materials for geotechnical and environmental applications in most parts of the world. Because they constitute manufactured materials, new products and applications are developed on a routine basis to ...

In this paper the corresponding physical phenomena of liquefaction are briefly described. Among them are: compressibility of soil skeleton, dilation, contraction, elastic versus plastic deformation, interaction between pore water and soil skeleton, compressibility ...

The focus of this paper is on applications (e.g. some leachate collection layers in landfills) where a drainage system consists of a geocomposite overlain by a sand layer. If the geocomposite does not have sufficient flow capacity to convey all the collected ...

<p>Results from studies into long-term changes in soil pore and moisture characteristics on land restored after surface mining in the UK will be presented. Recolonisation of soils by earthworms is a key factor in developing a new macro-pore system but in its ...

The paper provides equations for the hydraulic design of liquid collection layers. A first series of equeations gives the maximum thickness of the liquid collected in a liquid collection layer. These equations are used in design to check that the maximum liquid ...

Liquid collection layers used in landfills often comprise two sections with different slopes. Typically, one of the slopes ismuch steeper than the other one. The steeper slope is generally the downstream slope in a landfill cover and the upstream slope in ...

<p>This paper reviews physical means of slope stabilization, particularly subsurface drainage and rock / soil control and retention systems, which have been improved and technically advamced in recent years because of innovative changes in design, analysis ...