MasterSet R 100

Set Retarding Admixture for Concrete

Material Description

Placing and finishing requirements are facilitated because MasterSet R 100 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 100 admixture is recommended for use in all types of concrete where moderate to extended retardation of set and improved performance are desired.

This admixture improves:

• Pumped concrete

• Shotcrete (wet mix)

• Conventionally placed concrete

It improves:

• Plain concrete

• Reinforced concrete

• Precast concrete

• Prestressed concrete

• Lightweight or normal weight concrete

MasterSet R 100 admixture can be used with air-entraining cements and with air-entraining admixtures approved under EN 934 part 2 specifications. On its own, MasterSet R 100 admixture does not entrain air.

Characteristics and Benefits

The set retarding characteristics of MasterSet R 100 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 – reduces thermal cracking

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