Effect of Cement-fly Ash Additive on Compaction and Strength of Reservoir Dredged Material
نویسنده
چکیده
Tremendous quantities of reservoir deposited sediments are required to be dredged regularly to maintain the storage capacity of the reservoir. The reservoir dredged material (RDM) can be utilized as construction material after admixing with additives such as cement and fly ash thereby improving its strength characteristics. This research paper presents results of laboratory investigation carried out to study the compaction and unconfined compressive strength characteristics of different mix combinations of ordinary Portland cement, fly ash and reservoir dredged material (RDM). The results reveal that the unconfined compressive strength of the reservoir dredged material treated with cement and fly ash is significantly improved. The stress-strain curves reveal the brittle behavior of the composite material with increasing cement and fly ash contents resulting in brittle failure. The unconfined compressive strength for the optimum cement: fly ash: reservoir dredged material:: 5: 10: 85 composite is substantial to be used as construction material in road pavements and embankments.
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