Abstract:
The remediation of earthen dams is of growing interest worldwide. Plastic Concrete cut-off walls hereby
provide an effective and efficient method to control dam seepage. However, Plastic Concrete material
behaviour is not yet completely understood. The review presented here confirms that Plastic Concrete may
be considered to be a low-strength, low-stiffness impervious concrete with high deformation capacity under
load. Plastic Concrete mix design, although conceptually similar to standard concrete, clearly differs in key
aspects such as water-cement ratio and selected additions. Mechanical behaviour is in line with concrete
technology, however sample testing and results analysis are challenging. This review provides an important
opportunity to advance in the understanding of the material behaviour of Plastic Concrete and make a
contribution towards a more realistic design of Plastic Concrete cut-off walls. The results of this review
however also support the need for further investigations especially into the mechanical and hydraulic
material properties.