2016 Volume 72 Issue 2 Pages 117-125
Microscopic observation using scanning electron microscope (SEM) and compound identification using X-ray diffraction (XRD) are performed in order to discuss latent hydraulicity of granulated blast furnace slag and its effect on the increase in stiffness and strength of the slag. It is confirmed that curing of granulated slag in artificial seawater under relatively high temperature is rather effective to excite latent hydraulicity of the slag and to accelerate generation process of deposits. Addition of fine powder of granulated slag as stimulating agent is also effective in accelerating elution process of granulated slag into curing liquid and generation process of deposits. It is revealed that several kinds of deposits having structure of aggregates, film or pillar are generated by latent hydraulicity of granulated slag and they work to solidify contact points of granulated slag particles or to fill void space between slag particles.
