The water-cement ratio of the PCM specimens was 50%, and the polymer-cement ratios were 0, 5, 10, and 20%. In terms of cement, Type I ordinary Portland
Sodium Naphthalene Sulfonate Formaldehyde Condensate(SNF-A) Introduction: Sodium Naphthalene Sulphonate Formaldehyde Condensate is Sodium salt of naphthalene sulfonate polymerized with formaldehyde, also called sodium naphthalene formaldehyde(SNF), poly naphthalene sulfonate formaldehyde(PNS), Naphthalene Sulphonate