矿渣代砂水泥砂浆及混凝土物理力学性能研究

研究了高炉矿渣作为细骨料的本征特性及其不同代砂率水泥砂浆及混凝土的物理力学性能.结果表明:矿渣与天然砂作为细骨科时,其物理化学性能存在一定差异;与基准水泥砂浆相比,矿渣代砂水泥砂浆的需水性增大,早期抗折强度略有降低,但后期抗折强度不但不降低甚至还略有提高,抗压强度略有降低,干缩性减小;相对于普通混凝土,矿渣代砂混凝土的抗折强度和抗压强度均有所提高.

Study on Physical and Mechanical Performance of Mortar and Concrete Containing Blast Furnace Slag Aggregates

The intrinsic characteristics of blast furnace slag as fine aggregates and physical and mechanical performance of mortar and concrete containing blast furnace slag aggregates were investigated.Results show that the physical and chemical properties have some differences between blast furnace slag and sand as fine aggregate.Compared with reference mortar,the water demand of mortar containing blast furnace slag aggregates increases;the flexural strength at early age reduces but it at late age does not reduce and even somewhat increases;and the compressive strength somewhat reduces and the drying shrinkage reduces.The flexural strength and the compressive strength of concrete containing blast furnace slag aggregates increase compared with reference concrete.