N.H. Admin. Code § Env-A 4202.17
Current through Register No. 50, December 12, 2024
"Concrete surface retarder" means a mixture of retarding ingredients, such as extender pigments, primary pigments, resins, and solvents, that interacts chemically with the concrete to which it is applied to prevent hardening on the surface, allowing the retarded surface concrete to be washed away to create an exposed aggregate finish.
N.H. Admin. Code § Env-A 4202.17