利用不同材料体系的电阻率随时间变化关系和吸水率实验,研究了掺入疏水剂后水泥基材料的微结构形成与疏水特性。结果表明掺入疏水剂后会使水泥基材料的抗折强度与强度随掺量增加而降低,掺入疏水剂很好的改善了水泥胶砂和FA胶砂早期的吸水性能。显示2种疏水剂内掺后对浆体早期水化过程和吸水性能将产生不同影响。 Based on the relationship between resistivity and water absorption of different materials, the microstructure and hydrophobic properties of cement-based materials were studied. The results show that the incorporation of hydrophobic agent will make the flexural strength and strength of cement-based materials decrease with the increase of dosage. The incorporation of hydrophobic agent well improves the early water absorption of cement mortar and FA mortar. It is shown that the incorporation of two hydrophobic agents will have different effects on the early hydration process and water absorption of the slurry.