The Development of Superplasticizer
From the perspective of the performance development process of water reducing agents, the development of water-reducing agents can be divided into the following four stages:① Development and application of ordinary water-reducing agents represented by lignosulfonate;② Superplasticizer represented by β-naphthalenesulfonate formaldehyde condensate (PNS) and sulfonated melamine formaldehyde condensate (PMS);③ A superplasticizer with slump retention ability modified [...]