钢渣混凝土隔离墩工程应用
Engineering application of steel slag concrete isolation pier
3.1 原材料
3.1 Raw Materials
（1）水泥：海豹 PO42.5 ，抗压强度3d为24.9MPa、28d为50.9MPa。
(1) Cement: Seal PO42.5, compressive strength 24.9 MPa for 3 days and 50.9 MPa for 28 days.
（2）钢铁渣复合粉：宝钢钢渣微粉占比20%,宝田S95矿粉占比80%,采用规模化产线混匀制成；活性指数7d为83%、28d为103%。
(2) Composite powder of iron and steel slag: 20% of Baosteel slag powder, 80% of Baotian S95 powder, made by mixing large-scale production line; the activity index is 83% in 7d and 103% in 28d.
（3）粉煤灰：宝钢CⅡ级，细度17%、需水量比99%、安定性2mm。
(3) Fly ash: Baosteel Class C II, fineness 17%, water requirement 99%, stability 2mm.
（4）细骨料：转炉滚筒渣砂，细度模数3.1；黄砂，细度模数2.0。
(4) Fine aggregate: converter drum slag sand, fineness modulus 3.1; yellow sand, fineness modulus 2.0.
（5）粗骨料：5-25mm碎石；5-25mm电炉热泼渣。
(5) Coarse aggregate: 5-25mm gravel; 5-25mm electric furnace hot slag.
（6）外加剂：羧酸类混凝土泵送剂SLH-997。
(6) Additives: Carboxylic acid concrete pumping agent SLH-997.