Abstract
In Australia the utilisation of clay in the construction of landfill liners has recently come under criticism either due to the difficulty in reproducing the laboratory results on site, or because of the potential for cracking of the compacted liner after construction. Realising that clay is weak in tension and given the possibility of certain areas of the liner being subjected to flexure, a testing program was undertaken to determine the effects of placement (compaction), moisture content and internal reinforcement on the potential failure of clay liners. In particular, this paper discusses the load carrying capacity and deformation sustained by compacted clay beams in flexure, and the improvement gained through the introduction of an economical reinforcement in the form of galvanised steel wire netting. Results obtained by flexural bending tests are discussed in detail, and the extent of improvement provided by galvanised wire netting is evaluated.
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