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一、为什么在混凝土中使用引气剂引气剂可以改善混凝土拌合物的和易性,减小拌合水用量,降低泌水性及减少水泥浆的离析现象,可提高其抗冻性3～4倍,抗渗、抗裂、抗冲击能力都能得到提高,从而提高了其耐久性。耐久性的提高是高性能混凝土(HPC)的特色之一,是21世纪混凝土的发展方向。
1. Why the use of air-entraining air-entraining agents in concrete can improve the workability of concrete mixes, reduce the amount of mixing water, reduce the water-ejection and reduce segregation phenomenon of cement slurry, and can improve its frost resistance. 4 times, impermeability, crack resistance, impact resistance can be improved, thereby enhancing its durability. The improvement of durability is one of the characteristics of high-performance concrete (HPC) and is the development direction of concrete in the 21st century.