| Summary: | Peat is a highly organic and very compressible material, which is unable to support any building structure. It is formed in a waterlogged condition, which has limited oxygen supply. Owing to population growth, construction on this land can no longer be avoided for building developments. The construction industry is now looking forward to sustainable solutions. Therefore, the usage of waste tyres is seen as a potential replacement additive that can reinforce peat compared to other ground treatments such as cement or coarse aggregates. Nowadays, the disposal of waste tyre rubber has become a major threat to the environment globally. This paper investigates the compaction and unconfined compression strength characteristics of peat when treated with 5, 10, and 15% waste tyre granules. The results were then compared with untreated peat sample. It is observed that the maximum dry density increases and the optimum moisture content decreases when waste tyre was added at increasing amount. The stiffness of peat also increases with increasing tyre dosage as higher undrained shear strength is obtained. From this study, it is possible to use waste tyre granules as a fill material to improve the compaction and strength properties of peat soils. © Springer Nature Singapore Pte Ltd 2020.
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