CYCLIC SHEAR STRENGTH OF GRANULATED BLAST FURNACE SLAG IN THE PROCESS OF HARDENING

Abstract

Granulated Blast Furnace Slag (GBFS) has a hydraulic property and is expected as useful geo-material against liquefaction. In this paper, in order to clarify the cyclic shear strength in the process of hardening, the authors carried out the static shear tests and cyclic un-drained tri-axial tests for hardened specimens of GBFS with D_r=50% and 80%. As a result, it is observed that the dynamic shear strength increases proportionally with static shear strength and specimens with unconfined shear strength over 50kN/m² or cohesion over 40kN/m², show tensile break down without liquefaction in the cyclic un-drained tri-axial test.