Mechanics and drying shrinkage properties of high C_3S cement system

The mechanics and drying shrinkage properties of high C3S cement and popular cement systems were studied. The results indicated that high C3S cement had higher strength and less drying shrinkage and can largely utilize fly ash (up to 40% of fly ash may be added). The strength of popular cement at 3d and 28d be equivalent to high C3S cement only when it had high specific surface area, but its drying shrinkages was more than that of high C3S cement at the same curing and drying condition. To save energy, utilize resources and improve durability of cement and concrete materials, it was necessary to develop high C3S cement.