n Civil Engineering = Siviele Ingenieurswese - Technological response for mitigating environmental impacts to achieve long-term pollution prevention : engineering the environment




The use of composite lining systems, along with overlying and in some cases underlying drainage or leachate collection and/or monitoring systems, is an accepted international practice being legislated in many countries. South Africa has developed standards based on a 1980 philosophy which allowed a range of standards varying from containment to attenuation of pollution. However the substantial change in legislation from the mid-1990s is bringing South Africa in line with international practice.

This article explores barrier durability, and practicality issues of heat effects during construction and service life on performance. Consequently it describes a system which allows for post-construction hydration of clay components and barrier service life performance security, and reports on an evaluation of the system's ability to mitigate degradation, desiccation and diffusion effects of heat on barriers.


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