With the gradual enrichment with the types of concrete, the types of superplasticizers have also increased, and naphthalene superplasticizers and polycarboxylic acid superplasticizers are beginning to be broadly used in concrete [27,28]. Although there have already been quite a few types of superplasticizers, that are all based on OPC, the https://metal-3d-printer-price15825.spintheblog.com/38091526/a-review-of-foam-concrete-application