（1）通过对磨细云母粉进行疏水改性处理，可制备出具有良好疏水性能的粉体，采用该粉体可实现对此类材料的疏水改性。
（2）砂浆吸水和失水试验表明，改性粉体能降低砂浆的吸水率和失水率。降低吸水率的机理在于改性粉体增大了砂浆与液体的接触角，降低了毛细吸收高度；降低失水率的机理在于改性粉体对体系孔结构的改善作用。
（3）在标准养护条件下，改性粉体对砂浆强度有轻微不利影响，但能明显提高抗硫酸盐侵蚀性能。改性粉体减少了砂浆的表面剥落和强度损失，减小了水溶性SO42-的侵入深度和浓度。
（4）改性粉体对侵蚀液体的阻滞作用可以降低浸泡时水分的侵入和干燥时水分的迁出，降低腐蚀速率。

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