Research On The Pavement Performance Of Dredger Fill Sand In Coastal Region

Because of the natural geographic resource in coastal region, fisheryindustry and tourism have been improved at a fast pace. However, theproblems such as lacking in land resource are also revealed.In recent years,The government has established sustainable development policy aim tosave soil resource. So the corresponding building and constructionorganizations give enough positive responses. The policy requires theorganization to start from available resources and make it useful. Localsoil resource such as dredger fill sand in coastal region is proposed as thematerial to fulfill roadbed. This proposal has lots of advantages, such astechnological innovation, low cost and environment friendly, which cancreat great value in both society and economy.This paper mainly studies the applicability of the backfill sand and itsapplication, guide the construction of support project. Combining withlaboratory and field test and theoretical analysis to further study theengineering properties of backfill sand. Mainly for the following research:(1) The gradation、liquid plastic limit、salinity of the backfill sand incoastal region has been studied through test in the lab.(2) Assess the pavement performance of the dredger fill sand inCoastal area through compaction test and California bearing ratio test.(3) Laboratory undrained triaxial test has been conducted to get thecuring properties of dredger fill sand.(4) Through the field tests in the Coastal area, suitable performance、salinization、rolling plan、compaction properties are studied.(5)Theortical calculation and field tests have been done to know thestability of roadbed slope.