High Range Water Reducing Powders - Sika® ViscoCrete®-225 P

HIGH RANGE WATER REDUCING POWDERED SUPERPLASTICIZER

Sika® ViscoCrete®-225 P is a third generation high range water reducing and superplasticizing powder admixture for use in concrete and mortar. It is based on Sika’s patented ‘ViscoCrete®’ polycarboxylate polymer technology.

Sika® ViscoCrete®-225 P is a unique, specially formulated polycarboxylate powder that combines different mechanisms and is compatible with a variety of cement chemistries. Through surface adsorption and steric separation effect on the binder particles, in parallel to the hydration process, the following advantages may be observed:

• Effective when utilized with cements that have high C3A, sulphate and alkali content.
• Effective when utilized with ordinary portland cements (OPC) and blends of OPC and aluminate cements.
• Compatible with other additives (i.e. citric acid).
• Extremely high water reduction (resulting in high density and strengths).
• Excellent flowability (resulting in greatly reduced placing and compacting efforts).
• Increased high early strength development.
• Improved shrinkage and creep behavior.
• Low absorption time, “wets out” faster then competitive materials.
• Medium retardation.
• Ideal for use in self-leveling, self-compacting applications.

Usage

Sika® ViscoCrete®-225 P may be used in a variety of concrete applications but is especially suited for the production of mortar and concrete dry mix. Sika® ViscoCrete®-225 P facilitates extreme water reduction, excellent flowability, optimal cohesion, and promotes excellent self compacting behavior. Sika® ViscoCrete®-225 P is recommended for the following applications:

• Grouts in general.
• Non Shrink Grouts.
• Screeds in general.
• Self leveling Screeds.
• Gypsum and Anhydrite Screeds.

Sika® ViscoCrete®-225 P has been formulated to provide maximum water reduction however is suitable and may be utilized for all levels of water reduction. Can be combined with other ViscoCrete® powders to attain maximum effects such as flowability and retardation.

Advantages

Sika® ViscoCrete®-225 P is a unique, specially formulated polycarboxylate powder that combines different mechanisms and is compatible with a variety of cement chemistries. Through surface adsorption and steric separation effect on the binder particles, in parallel to the hydration process, the following advantages may be observed:

• Effective when utilized with cements that have high C3A, sulphate and alkali content.
• Effective when utilized with ordinary portland cements (OPC) and blends of OPC and aluminate cements.
• Compatible with other additives (i.e. citric acid).
• Extremely high water reduction (resulting in high density and strengths).
• Excellent flowability (resulting in greatly reduced placing and compacting efforts).
• Increased high early strength development.
• Improved shrinkage and creep behavior.
• Low absorption time, “wets out” faster then competitive materials.
• Medium retardation.
• Ideal for use in self-leveling, self-compacting applications.

Packaging

Sika® ViscoCrete®-225 P is available in 44 lb. (20 kg) bags, 40 bags/pallet.

Color

White powder

Product Details

Product Information

Shelf Life

Shelf life when stored properly in undamaged, unopened, original sealed packaging in dry warehouse conditions between 45°F and 80°F (7°C - 27°C) is 1 year.

Storage Conditions

Protect from direct sunlight and frost. Store in dry warehouse conditions between 45 °F and 80 °F (7-27 °C).

Bulk Density

0.6 ± 0.1 g/cm³

Application

Application Information

Mixing

Sika® ViscoCrete®-225 P is added to the dry mix at the beginning of batching cycle. For optimum utilization of the high water reduction it is recommended to allow a minimal wet mixing time of 30 seconds. Sika® ViscoCrete®-225 P is highly effective as single added admixture or in combination with other Sika Admixtures. If used in combination with certain Sikament® water reducing admixtures plastic properties can be affected.

Consumption

Recommended Dosage

Depending on the application, the dosage of Sika® ViscoCrete®-225 P varies from 0.05 to 0.5% of the powder weight. At high dosage Sika® ViscoCrete®-225 P can cause retardation as well as at low temperatures.

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