木质素磺酸盐是一种众所周知的混凝土减水剂。在全世界数以百计的减水剂中,它的数量一直居于首位。但木质素(包括碱木素)用作减水剂成功的例证很少,原因有两点:第一,碱木素本身的减水增强效应比较差,性能不够稳定;第二,碱法造纸废液一般必须磺化成为木质素磺酸盐或者通过化学 Lignosulfonate is a well-known concrete water reducer. Among the hundreds of water reducers in the world, its number has always been the highest. However, there are few examples of successful use of lignin (including alkali lignin) as a water reducer. There are two reasons for this: First, the water-reducing reinforcing effect of alkali lignin itself is relatively poor, and its performance is not stable enough. Second, alkaline papermaking Waste liquids generally must be sulfonated to lignosulfonate or through chemistry