Sika® ViscoCrete®-20 HE TH

• Pronounced increase in the early strength development, resulting in very economic stripping times for precast and in situ concrete
• Extremely powerful water reduction, resulting in high density, high strength and reduced permeability for water etc.
• Superior plasticising effect, resulting in improved flowability, placing and compacting behaviour.

• Precast concrete
• Fast-track concrete
• In situ concrete requiring fast stripping time
• Self Compacting Concrete (SCC)

• Pronounced increase in the early strength development, resulting in very economic stripping times for precast and in situ concrete
• Extremely powerful water reduction, resulting in high density, high strength and reduced permeability for water etc.
• Superior plasticising effect, resulting in improved flowability, placing and compacting behaviour.
• Reduced energy costs for steam cured precast elements
• Especially suitable for the production of Self Compacting Concrete (SCC) Improved shrinkage and creep behaviour
• Reduced closure times for repairs to roads and runways
• Does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced and prestressed concrete structures.

Complies with ASTM C494 Type E

• Sika® ViscoCrete®-20 HE TH is added to the gauging water or added with it into the concrete mixer.
• To take advantage of the high water reduction, a wet mixing time, which is depending on the mixing conditions and mixer performance, of at least 60 seconds is recommended.
• To avoid excess water in the concrete, the final dosage must begin only after 2/3 of the wet mixing time.

• For medium workability: 0.2 - 0.8% by weight of cement.
• For concrete of high workability, very low water/cement ration.
• For self compacting concrete: 1.0 - 2.0% by weight of cement.

• The standard rules of good concreting practice, concerning production and placing, are to be followed.
• Laboratory trials shall be carried out before concreting on site, especially when using a new mix design or producing new concrete components.
• Fresh concrete must be cured properly and curing applied as early as possible.

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