Abstract
Dredged marine soil (DMS) is considered as weak and soft problematic soil. It is possible to give this type of soil a second life if only its geotechnical properties are improved. Infusing soil with solidification agent is the common practice of soil improvement. This study uses binder and waste granular material (WGM) such as cement, bottom ash (BA) and palm oil clinker (POC). The aforementioned materials are capable to fortify the poor features of the soil. Series numbers of soil bed samples were tested for its shear strength and shear resistance. Test results show that the mentioned soil parameters were corresponded with each other. In short, geo-waste and biomass materials are possible to be reused instead of being discarded.
Highlights
Excavation of dredged marine soil (DMS) in the open channel is considered as dredging
It shows that soft soil which admixed with waste granular material (WGM) is able to improve in strength due to its cementation nature and its frictional resistance
Note that the Cu value of the untreated soil is negligible since none torsion was detected. This is primarily due to the liquefied nature of DMS which contain high value of moisture
Summary
Excavation of dredged marine soil (DMS) in the open channel is considered as dredging This activity is required to satisfy maintenance improvement work near the shipway. As the DMS was removed out from the water body, the suspended sediments would cause turbidity [2] This would result into negative effects toward the marine ecosystem, either in short or long term. The secondary reaction which is known as pozzolanic reaction was as a result of effect of secondary cementation products It would harden by age and further improve the strength of the mixed soil. Some studies [8,9] had highlighted the advantages of using BA and POC as soft soil stabilizer It shows that soft soil which admixed with WGM is able to improve in strength due to its cementation nature and its frictional resistance. Laboratory vane shear and laboratory cone penetration test were used to obtain such required results
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