In Malaysia, the remediation of soils polluted by organic compounds is a challenging issue in environmental engineering. Improper treatment and conventional remove-and-replace approaches have low performance in terms of cost and sustainability. Hence, chemical stabilisation has been utilised worldwide to enhance the engineering properties of organic soils. This study focused on stabilising organic soil using cementitious-based chemicals blended with netted-polymeric fibre to improve its strength. This paper reviews the relevant past work as a basis for work in the pipeline. The study aims to determine the effectiveness of netted-polymeric fibre reinforcement on the shear strength characteristics of the stabilised organic sand. The fibre has tensile resistance that can be mobilised by normal pressures acting on fibre reinforcement soil. The best mixture of sand, clay, organic content and stabiliser for organic soil treatment will be identified as the way forward. The shear strength characteristics of the stabilised organic soil samples would then be evaluated parametrically using field application considerations.
Abstract. Dynamic probing is a continuous soil investigation technique, which is one of the simplest soil penetration test. It basically consist of repeatedly driving a metal tipped probe into the ground using a drop weight of fixed mass and travel. Testing was carried out continuously from ground level to the final penetration depth. Once the soil investigation work done, it is difficult to pull out the probe rod from the ground, due to strong soil structure grip against probe cone and prevent the probe rod out from the ground. Thus, in this case, a tool named Extracting Probe was created to assist in the process of retracting the probe rod from the ground. In addition, Extracting Probe also can reduce the time to extract the probe rod from the ground compare with the conventional method. At the same time, it also can reduce manpower cost because only one worker involve to handle this tool compare with conventional method used two or more workers. From experiment that have been done we found that the time difference between conventional tools and extracting probe is significant, average time difference is 155 minutes. In addition the extracting probe can reduce manpower usage, and also labour cost for operating the tool. With all these advantages makes this tool has the potential to be marketed.
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