TYTRO® RC 430 is a rheology-controlling admixture specifically formulated to improve sprayability and pumpability characteristics of shotcrete by increasing cohesion, provide superior bond to rock substrate, faster strength development, and minimum rebound and dust to tunnels and underground mining shotcrete applications.
engineered amorphous silica nanoparticles
"Featuring the latest in nanotechnology, TYTRO® RC 430 contains a liquid dispersion of discrete, spherical, uniformly distributed nanometric particles of amorphous silica for use in shotcrete." - Retrieved on 10/19/17 from https://gcpat.com/en/solutions/products/tytro-shotcrete-system/tytro-rc-430
An electron micrograph is provided showing discrete spherical particles approximately 10 nm in diameter, according to the scale bar shown. TYTRO® RC, in comparison to traditional pozzolanic materials, is described as an "engineered nanomaterial."
unable to locate SDS online