Strength of concrete made from dredged sediments

Sea and river dredging has produced a large volume of dredged waste over the years which could trigger geo-hazards including dispersion of contamination from sediments. One of the ways to overcome this issue is by incorporating it into geotechnical engineering purposes including the production of concrete for foundation, retaining wall and highway construction. This research aims to investigate the strength of concrete made from dredged sediments and to compare it with the strength of conventional concrete. This research emphasises on the usage of two types of dredge wastesilt and sand, obtained from Kuala Perlis, Perlis and Sungai Bebar, Pahang, respectively. The dredged sediments from Sungai Bebar will be used as fine aggregates while sediments from Kuala Perlis will be used as admixtures and fine aggregates for production of concrete. The concrete will then be tested for its strength. As a result, the concrete made from these two rivers are able to produce the minimum strength requirement for C20 concrete mix. This enables the concrete mixtures used in this research to be applied in the construction of foundation, retaining wall and highway. This research helps in reducing the amount of wastage from dredge work as well as providing a new material source for concret