EVALUATION OF C-S-H ON MASS TRANSFER USING COMPRESSION MOLDED C-S-H

Abstract

In this study, compression molded C-S-H specimens were prepared to study the influence of C-S-H mass transfer properties in hardened cementitious materials. C-S-H with various CaO/SiO₂ molar ratio were synthesized. The compression molded specimens were prepared using a powder molding machine and a cold isostatic press machine. The condition of the compression molded was decided. Moreover, by evaluating the tortuosity in oxygen diffusion by conducting oxygen diffusion test and measurement of pore size distribution of the compressed C-S-H. The tortuosity is correlated with the surface area of C-S-H.