​MasterPolyheed 8840

Mid-range water reducer with superior pumping and finishing

Available in New Zealand only

How does MasterPolyheed 8840 work? 

MasterPolyheed 8840 is a multi-component, non-chloride, mid-range water reducing admixture designed to improve the performance of concrete both in the plastic and hardened states.   MasterPolyheed 8840 meets and exceeds the requirements of AS1478 Type MWR. 

Recommended uses:

• All types of concrete where a non-chloride water reducing admixture is required, especially in the mid-range slump band (100-150mm)
• Improving the performance of pumped concrete, shotcrete and conventionally placed concrete
• Improving the performance of plain, reinforced, precast, light weight or standard weight concrete
• Use in white or coloured concrete
• Use in architectural concrete, especially where off-form and/or surface finish is critical
• Use in concrete containing harsh aggregates and/or manufactured sands

What are the unique features of MasterPolyheed 8840?

MasterPolyheed 8840 is a versatile admixture able to produce mid-range slumps without retardation.  Its formulation contains materials able to improve the concrete’s workability and finishability.

What are the benefits of MasterPolyheed 8840?

In the plastic state:

• normal setting characteristics throughout the recommended dose range
• reduced segregation, particularly in lean mixes and mid slump concrete
• improved workability
• improved pumpability
• reduced water content for a given workability
• enhanced finishability, especially for concrete with manufactured or harsh aggregates

In the hardened concrete:

• no added chlorides, conforms to the most stringent chloride ion limits including AS3600 concrete structures code, will not initiate or promote the corrosion of reinforcing steel
• increased strength – compressive, flexural and bond (concrete to steel)
• superior finished appearance
• increased density and durability
• reduced permeability – improved watertightness
• reduced cracking