Aging effect on the physical and mechanical properties of granulated blast furnace slag as lightweight banking

Abstract

In order to investigate the long-term characteristics of the granulated blast furnace slag in the field, the in-situ lightweight embankment was constructed. The changes of physical and mechanical properties that result from latent hydraulic properties were examined in the field measurements and laboratory tests on specimens taken from test site. Following conclusions were obtained: (1) GBF-slag keeps the enough lightweight characteristics over 7 years after construction. (2) Cohesions of GBF-slag increase with time and converge to the constant value after passing 7 years. Latent hydraulic properties of GBFS-slag, however, have little influence on the internal friction angle. (3) The permeability of the GBF-slag after solidification is around 10^-4 - 10^-5m/sec.