With the gradual enrichment with the types of concrete, the types of superplasticizers have also improved, and naphthalene superplasticizers and polycarboxylic acid superplasticizers are starting to be extensively used in concrete [27,28]. Despite the fact that there are lots of types of superplasticizers, which are all based on OPC, the https://kylerlmkig.wikigiogio.com/1824523/everything_about_sio2