With the gradual enrichment with the types of concrete, the types of superplasticizers have also amplified, and naphthalene superplasticizers and polycarboxylic acid superplasticizers are beginning to be broadly used in concrete [27,28]. Although there happen to be a lot of types of superplasticizers, which might be all based on OPC, https://aerogelpowder83691.wikibyby.com/1809551/detailed_notes_on_prestressed_concrete_means