Early-age properties of concrete containing various types of granulated slag

Workability and strength development

This research investigated fresh and hardened properties of concretes containing three different types of slag at three different replacement ratios and three different water/binder ratios. The three types of slag include ground granulated blastfurnace slag, ground granulated Corex slag and a ground granulated ferro-manganese arc furnace slag. The test results indicate that the use of the slags under investigation increases concrete workability at high water/binder ratios only. One-day strength values were strongly dependent on the slag replacement ratio. The influence of slag replacement level on compressive strength reduced over time. Notably, strength development characteristics and long-term strength values were considerably different for different types of slag.

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