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.
CHARACTERISTICS / 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.
Storage Conditions
Protect from direct sunlight and frost. Store in dry warehouse conditions between 45 °F and 80 °F (7–27 °C).
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.
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. Please contact your local sales representative or technical service department at 1-800-933-7452 for further information.
English
