Change of mechanical properties of the cement mixed marine clay under seawater

Abstract

This paper focuses the mechanical properties of the deteriorated cement mixed marine clay when immersed in seawater. Series of shear box tests were conducted maintaining the constant volume for the deteriorated cement mixed Ariake clay. The deteriorated specimen was prepared immersing into the artificial seawater simulated in the laboratory for 630 days. Authors compared the change in mechanical properties of the deteriorated specimen with the non-deteriorated cement mixed clay together with remolded Ariake clay. The deterioration of specimens with intrusion of simulated seawater increases compressibility which is associated entirely with the presence of cement at the beginning of the experiment. The deterioration decreased the shear strength of the cement mixed marine clay. The strength of deteriorated cement mixed marine clay dissolved by calcium is almost equal to that of the remolded Ariake clay.