Excellence in Research and Innovation for Humanity
%0 Journal Article
%A K. Vandenboer and  L. Dolphen and  A. Bezuijen
%D 2017 
%J  International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering
%B World Academy of Science, Engineering and Technology
%I International Science Index 129, 2017
%T Backward Erosion Piping through Vertically Layered Sands
%U http://waset.org/publications/10007839
%V 129
%X Backward erosion piping is an important failure mechanism for water-retaining structures, a phenomenon that results in the formation of shallow pipes at the interface of a sandy or silty foundation and a cohesive cover layer. This paper studies the effect of two soil types on backward erosion piping; both in case of a homogeneous sand layer, and in a vertically layered sand sample, where the pipe is forced to subsequently grow through the different layers. Two configurations with vertical sand layers are tested; they both result in wider pipes and higher critical gradients, thereby making this an interesting topic in research on measures to prevent backward erosion piping failures.
%P 766 - 769