Evaporation Retardant
“A long chain organic material such as cetyl alcohol which, when spread on a water film on the surface of concrete, retards the evaporation of bleed water.”
What Evaporation Retardants are not:
- Concrete surface retarders
- To be used in the final finishing operations
- “..not to be used for the purpose of making it easier to finish concrete surfaces (materials designed for such purpose are often referred to as finishing aids)...”
When to use an evaporation retardant:
- When it is windy or breezy
- When the humidity is low
- When in direct sunlight
- When using a low w/cm concrete
- When placing dry-shake hardeners
- When placing concrete with silica fume/micro silican
J-74 Sure-Film: Sure Film is a proprietary emulsion of unique organic compounds designed to minimize moisture loss from fresh concrete.
 |
Guide to evaporation retardants |