For the purpose of using granulated BF (Blast Furnace) slag as an alternative mateirla to marine sand which has so far been conventionally used in the foundation engineering, the static shear-strength properties of granulated BF slag were examined and compared iwth those of the natural marine sand. As a result, it was clarified that the grain-size distribution and the desntiy of granulated BF slag were very similar to those of marine sand, and the void ratio of granulated BF slag was larger due to a lot of air bubbles inside the granulated BF slag grain and consequently its maximum dry density after compaction was smaller, as compared with those of marine sand. Although there occurred grain crush in granulated BF slag in a relatively low confining-pressure range, the friction angle of granulated BF slag in the critical state is higher than that of marine sand.
展开▼
