MasterSet R 107

Set Retarding Admixture for Concrete

Material Description

Placing and finishing requirements are facilitated because MasterSet® R 107 retards setting time.

• Increased compressive and flexural strength

• Durability to damage from freezing and thawing

• Reduced water content required for given workability

• Retarded setting characteristics

Areas of Application

MasterSet® R 107 admixture is recommended for use in all types of concrete where moderate to extended retardation of set and improved performance are desired.

• Pumped concrete

• Shot-concrete (wet mix)

• Conventionally placed concrete

• Plain, reinforced, precast, prestressed, lightweight or normal weight concrete

MasterSet® R 107 admixture can be used with air-entraining cements and with air-entraining admixtures approved under EN934 part 2 specifications. On its own, MasterSet® R 107 admixture does not entrain air.

Characteristics and Benefits

The set retarding characteristics of MasterSet® R 107 admixture aid in the production of concrete with the following special qualities:

• Improved workability

• Reduced segregation

• Superior finishing characteristics for flatwork and cast surfaces

• Controlled retardation depending on the addition rate

• Provides flexibility in scheduling of placing and finishing operations

• Offsets the effects of too early hardening during extended delays between mixing and placing

• Helps eliminate cold joints

• Allows for dead-load deflection to take place (before concrete sets) in extended pours for bridge decks, cantilevers, non-shored structural elements, etc.

• Lowers peak temperature and/or rate of temperature rise in mass concrete, reducing thermal cracking

• Effective as a single admixture or as a component in a MasterPozzolith®, MasterGlenium® and MasterRheobuild® admixture system