Abstract

Studies conducted on alkali-activated materials in late years attested that they could be a replacement to ordinary Portland cement (OPC). Nevertheless, their performances in aggressive conditions require profound investigations to evaluate the ability to the fluid transfer. This article assesses the pore structure of alkali-activated mortars produced using one-part metakaolin combined with ground granulated blast furnace slag and other-part using only alkali-activated ground granulated blast furnace slag. The pore characteristics of alkali-activated mortars were compared to those of OPC as a reference. Tests consist in the measurement of the porosity accessible to water, water absorption and sorptivity. The results revealed that the alkali-activated based metakaolin combined with ground granulated blast furnace slag have greater porosity, water absorption, sorptivity and rate of water saturated porosity than alkali-activated based ground granulated blast furnace slag and Portland cement mortars.

摘要

近年来对碱激活材料进行的研究证明，它们可以替代普通硅酸盐水泥 (OPC)。然而，它们在侵蚀性条件下的性能需要深入研究以评估流体传输能力。本文评估了使用一部分偏高岭土结合磨碎高炉矿渣和另一部分仅使用碱激活磨碎高炉矿渣生产的碱激活砂浆的孔结构。将碱活化砂浆的孔隙特征与 OPC 的孔隙特征进行比较，作为参考。测试包括测量可接触水的孔隙率、吸水率和吸附率。结果表明，碱活化基偏高岭土与磨细粒化高炉矿渣结合具有较大的孔隙率，