Slope improvement technique using 8R mat system

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Date
2016-09-01
Authors
Muhamad Hisyam Halim
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Abstract
Slope stabilization technique is become an important subject in the geotechnical field. Currently, there are a number of landslide occurrences around the world. In order to improve the slope stability, so many types of slope reinforcement had been produced lately. Among these, scrap tyre had been showing some desired properties for slope stabilization technique. Since the amount of generated tyre exceeded the amount of scrap tyre recycled annually, it is a good opportunity to solve this environmental problem at the same time enhancing the slope stability when it is used in geotechnical field. In this research, a prototype slope reinforced with 8R mat system was constructed on 15th December 2014 to study its performance. This 8R mat was produced using 8 shape tyre. For the analysis purposes, the tensile, pull-out and axial test were conducted on the scrap tyre to determine its properties. The tensile strength of the sample was lower on strip sample compared to 8R sample due to disturbed wire condition. The result shows that the pull-out force was influenced by the shape, number of reinforcement, size, overburden load and also the fill material. The apparent cohesion shows an increase with the increase of connection number. From the slope analysis result, it shows that by installing the 8R mat the slope stability had improved. From the monitoring results, it shows that the 8R mat system will provide a retaining wall that have better drainage, high strength and lightweight. Thus, by using the 8R mat system as a retaining structure will provide a desirable retaining wall at the same time help in reducing the amount of scrap tyre available.
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