摘要：In order to research the corrosive state of landfill liner system, which affected by landfill leachate, andexplore its strength and microstructure properties, contacting reaction between landfill leachate andcompacted clay landfill liner system was simulated. Then, clay samples of different layers wereinvestigated by unconfined compressive testing, shear testing and static nitrogen adsorption testing.The results showed that corrosion degree of clay samples caused by landfill leachate increased withthe decrease of deepness of clay. And the maximum unconfined compressive strength (UCS) decreasedobviously along with the shear strength. The UCS at 10cm was 53.1% that of layer at 50cm and theshear strength was 40.4~62.4% at 10cm that of 50cm. The static nitrogen adsorption testing showedthat the shape of clay particle was bottleneck like, and with the decrease of the depth of clay, therewas a decrease in the number of micropores whose size was no smaller than 6nm. And the numberof pores which was between 2nm and 5nm increased. In addition, there also appeared microporewhich was smaller than 2nm. And the average pore size was decreased from 5.083nm at 50cm to3.768nm at 10cm.
