@article{(Open Science Index):https://publications.waset.org/pdf/10007839, title = {Backward Erosion Piping through Vertically Layered Sands}, author = {K. Vandenboer and L. Dolphen and A. Bezuijen}, country = {}, institution = {}, abstract = {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.}, journal = {International Journal of Geotechnical and Geological Engineering}, volume = {11}, number = {9}, year = {2017}, pages = {766 - 769}, ee = {https://publications.waset.org/pdf/10007839}, url = {https://publications.waset.org/vol/129}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 129, 2017}, }