... products, perimeter security, caststone pavers; and for traffic safety construction such as concrete median barriers,bridge parapets, guardrails ... any architectural concrete application. Brand Name:FreeModel Number:Grade 42.5 R/NColor:GreyFeature:Expansive, Radiation-ResistantMain Raw ... - 230 kg/cm2, 07 ...Silicon Dioxide (SIO2):21,00M Tricalcium Silicate (C3S):60,00Dicalcium Silicate (C2S):15 ...