摘  要：为了研究矿物掺合料对超早强支座砂浆流动性能及力学性能的影响，在普通支座砂浆配比的基础上，通过掺加不同掺量的粉煤灰、矿渣、硅灰、微珠来分别探究对支座砂浆各项性能的影响，再对其进行交叉复掺研究复配试验。结果表明，超细矿粉与粉煤灰存在最佳的掺量区间，最佳掺量为3%~9%，四种矿物组分单掺对短期强度贡献分别为：硅灰＞超细矿粉＞粉煤灰＞微珠；对长期强度贡献分别为：硅灰＞粉煤灰＞超细矿粉＞微珠；对流动度损失敏感程度分别为：超细矿粉＞粉煤灰＞硅灰＞微珠。

Abstract: In order to study the effect of mineral admixture on the flow properties and mechanical properties of super-early strength pedestal mortar, based on the mix proportion of normal pedestal mortar, the properties of pedestal mortar with different amounts of the fly ash, slag, silica fume and beads are tested and studied. Then these admixtures are?added into the pedestal mortar in cross experiments. The results show that the best mixing amount of fine breeze and fly ash is existed, which is 3%~9%, and the contribution of the four mineral components to the short-term strength is: silica fume> superfine breeze> fly ash> beads; the contribution of the four mineral components to the long-term strength is: silica fume>fly ash>superfine breeze>beads; the sensitive degree of the four mineral components to fluidity loss is: superfine breeze>fly ash>silica fume>beads.