Effect of a cement-lignin agent on the shear behavior of Shanghai dredged marine soils

With the rapid urbanization in Shanghai, China, suitable fill materials have been reported to be in great \nshortage in recent years. A prospective solution to these issues is to convert the huge amount of existing \ndredged marine soils to construction materials via solidification. However, there have been no studies on \nthe shear behavior of the SDMs from Shanghai region so far, while it has been reported by many other \nresearchers that the available data obtained from certain types of clay cannot be confidently and readily \napplied to other types of soils. To address this challenging issue, in this paper, samples of Shanghai \nmarine dredged soils were retrieved from the world’s largest reclamation project in Shanghai Lin-gang \nNew City. A series of laboratory tests have been conducted to investigate the shear behavior of Shanghai \ndredged marine soils solidified using a new composite curing agent (PM) made of cement and lignin. The \ntest results and the effect of this cement-lignin agent on the shear behaviour of Shanghai marine soils, \nincluding the stress-strain behavior, shear strength properties and failure characteristics has been \npresented and discussed, which can provide valuable reference for the use of dredged soils as construction \nmaterials in the Shanghai region.