Reusing soft soils with cement-palm oil clinker (POC) stabilisation
Malaysia is the largest producer and exporter of palm oil in the world. However the palm oil refineries also produce tonnes of waste products known as palm oil clinker or POC. POC is normally disposed of in landfill or incinerated, incurring costs and causing negative environmental impact, such as p...
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| 在线阅读: | http://eprints.uthm.edu.my/269/ http://eprints.uthm.edu.my/269/1/rafidah_robani.pdf |
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| 总结: | Malaysia is the largest producer and exporter of palm oil in the world. However the palm oil refineries also produce tonnes of waste products known as palm oil clinker or POC. POC is normally disposed of in landfill or incinerated, incurring costs and causing negative environmental impact, such as pollution. Therefore the appropriate use of POC can help preserve the environment from undesirable effects, while at the same time contributes to cost reduction for the palm oil industry. On the other hand, Malaysia has vast spreads of soft soils with low strength and high compressibility. Continuous development has made it necessary to construct on these weak deposits with pre-treatment, such as cement stabilisation. Nevertheless cement is fast becoming an expensive yet basic construction material, and any alternative materials with similar properties are highly anticipated to ease the economic pressure. By combining cement and POC to form a novel soft soil stabiliser, the soft soil areas can be reused at reasonable costs while the palm oil industrial ‘waste’ can be reutilised for a good cause. This paper describes the effort expended at the Research Centre for Soft Soils (RECESS) of UTHM to examine the potential of the cement-POC combination for treating soft soils. Various percentages of POC were admixed with 5 % of cement to treat the soft clay collected from the RECESS’s test site itself. The specimens were cured up to 28 days, then subjected to the bender element test. The measurements showed that the cement-POC stabiliser can effectively increase the stiffness of the soft clay, where POC significantly complemented the cementatious effect of cement at certain mix proportion. The potential of cement- POC as a soft soil stabiliser was clearly underlined, though further work is necessary for more insights of the stabilised soils. |
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