Abstract
There are many countries in the world have recycled dredged mud as filling material. In Vietnam, some studies show that dredged mud can be recycled as filling material from cement PCB. This study is aimed at discussing the effect of chemical composition in cement on strength and microstructure of filling material (VSL material). A series of laboratory tests for evaluating the influence of chemical composition in cement such as: CaO, SO3, Al2O3 to strength of VSL material. In the tests, the main materials are West Lake mud, PCB cement and polymer with different ratios. The results show that soil strength is inversely proportional to CaO content and directly proportional to Al2O3, SO3 content. Moreover, the Scanning electron microscopy–SEM test evaluated the influence of cement and polymer to change in the microstructure of VSL material.
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