Composite liquid waterproofing agent and preparation method thereof

The invention provides a composite liquid waterproof agent, which is used for being doped into premixed concrete and comprises an anti-crack material, a waterproof material, a stabilizer, a wetting agent and a solvent, wherein the anti-cracking material is used for reducing shrinkage cracking of the concrete structure; the waterproof material is used for improving the hydrophobic and hydrophobic capacity of the concrete structure; the wetting agent is used for reducing the surface tension and/or interfacial tension of the anti-crack material and/or the waterproof material; the stabilizer is used for improving the stability of the compound liquid waterproof agent. The invention also provides a preparation method of the composite liquid waterproof agent. 本公开提供一种复合型液体防水剂，用于掺入预拌混凝土，其包括：抗裂材料、防水材料、稳定剂、润湿剂和溶剂；其中，所述抗裂材料用于减少混凝土结构收缩开裂；所述防水材料用于提高混凝土结构憎水疏水能力；所述润湿剂用于降低抗裂材料和/或防水材料的表面张力和/或界面张力；所述稳定剂用于增加复合型液体防水剂的稳定性能。本公开还提供一种复合型液体防水剂的制备方法。