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Assessing the Resistance to Capillary Rise of Moisture of Asphalt Stabilized Embankment model

Saad Issa Sarsam

Abstract


One of the major durability problems of roadway embankment that is constructed with Gypseous soil is the continuous dissolution of the gypsum due to the capillary rise of moisture throughout its service life. Restriction of the dissolution may be ensured by stabilizing the Gypseous soil with emulsified liquid asphalt. In the present investigation, Gypseous soil was implemented in the construction of an embankment model in the laboratory. Cationic emulsion was used to stabilize the soil. The control and the stabilized soil embankment models were subjected to capillary rise of moisture from the base of the model. The vertical deformation was monitored on the surface of the embankment model for dry and capillary rise absorbed soil models before and after stabilization with emulsion. It was observed that the vertical deformation of the control model increases significantly after absorption. However, it decline by 45 % after stabilization when tested in the dry condition. The vertical deformation declines by 95.8 % after stabilization when tested under the capillary rise absorption condition.


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References


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