Effect of solvent exchange on length change and creep of D-dried hydrated C3S paste

The results of a study an creep of D-dried hydrated C3S paste after exchang e of water in saturated samples with organic solvent are presented Length a nd mass changes were also measured when saturated C3S paste prepared at a w ater-solid ratio of 0 .4 was immersed in both methanol and isopropanol. A d ifferential thermogravimetric technique was used in order to determine the effect of solvent treatment on dehydration of C3S paste, and its correlatio n with pore structure, modulus of elasticity and microhardness. Methanol an d isopropanol exchanges prior to drying reduce the magnitude of creep in th e dry state, suggesting an irreversible interaction of solvent with C-S-H.