LC-400R is a set retarding, water-reducing multi-component admixture for concrete. It is designed to facilitate the placing and finishing of concrete while providing control over the set time. LC-400R is especially beneficial during hot weather concreting operations when control of setting time and maintenance of a placeable consistency are essential.


  • Provides variable control of setting time based on dosage rate
  • Improves quality of concrete by decreasing water-cement ratio
  • Increases strengths both compressive and flexural
  • Increases density and relative durability
  • Resists damage caused by freezing and thawing
  • Reduces water content needed for a given workability
  • Reduces cracking and shrinkage
  • Reduces surface bleeding
  • Reduces segregation
  • Provides superior finishability on all flatwork and pre-cast surfaces
  • Improves pumpability of concrete
  • Maintains slump life during extended mixing times
  • Aids to reduce peak heat of hydration in mass pour concrete, reducing thermal cracking
  • Aids in preventing cold joints