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Sika® ViscoCrete®-200 EPC

High Range Water Reducing / Superplasticizing Admixture for Precast concrete

Sika® ViscoCrete®-200 EPC is a polycarboxylate based superplasticizer particularly developed for use in the precast industry to give high workability at low water: binder ratios with normal setting times.
Suitable for use in hot and tropical climatic conditions.

Sika® ViscoCrete®-200 EPC acts as a powerful superplasticizer by both surface adsorption and steric hindrance effects separating the binder particles resulting in:  
  • Higher dispersion
  • The possibility to work with very low water/binder ratios and avoiding the high stickiness common to such kind of mixes
  • Easier to control during casting due to sufficient retention period and high early strength development
  • Extremely high water reduction (resulting in high density and strengths) even in double or triple blend mixes (e.g. cement, GGBS, and silica fume)
  • Low water permeability and chloride migration
  • Increased high early strength and strength development even with the use of low cement content mixes
  • Improved shrinkage and creep behavior
  • Excellent flow ability resulting in minimal placing and compacting efforts leading to much denser concrete
  • Does not contain chlorides or other steel corrosion promoting ingredients
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Usage

Sika® ViscoCrete®-200 EPC has been specially developed for:
  • High flow concrete
  • Concrete with a low water / binder ratio
  • High strength concrete
  • Production of precast concrete elements
  • Panels, beams, columns etc.
  • Steam or normal curing conditions

Advantages

Sika® ViscoCrete®-200 EPC acts as a powerful superplasticizer by both surface adsorption and steric hindrance effects separating the binder particles resulting in:  
  • Higher dispersion
  • The possibility to work with very low water/binder ratios and avoiding the high stickiness common to such kind of mixes
  • Easier to control during casting due to sufficient retention period and high early strength development
  • Extremely high water reduction (resulting in high density and strengths) even in double or triple blend mixes (e.g. cement, GGBS, and silica fume)
  • Low water permeability and chloride migration
  • Increased high early strength and strength development even with the use of low cement content mixes
  • Improved shrinkage and creep behavior
  • Excellent flow ability resulting in minimal placing and compacting efforts leading to much denser concrete
  • Does not contain chlorides or other steel corrosion promoting ingredients

Packaging

1000 L flowbin. Bulk supply in tanker trucks possible on request

Colour

Brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Sika® ViscoCrete®-200 EPC follows the requirements of ASTM C494; Type F and EN 934-2
Product Information

Composition

Aqueous solution of modified polycarboxylates, co-polymers

Shelf life

12 months from date of production if stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5 °C and +45 °C. Protect from direct sunlight and frost.

Density

~1.11 kg/l (+25 °C)

Total Chloride Ion Content

Nil

(EN 934-2)
Technical Information

Concreting Guidance

The standard rules of good concreting practice for production and placing must be observed when using Sika® ViscoCrete®-200 EPC in concrete. Refer to relevant standards.
Fresh concrete must be cured properly especially at high temperatures in order to prevent plastic and drying shrinkage. Use Sika® Antisol® products as a curing agent or apply wet hessian.

Application

Application Information

Compatibility

Sika® ViscoCrete®-200 EPC may be combined with all types of Portland cement (OPC and SRC), concretes containing pozzolanic materials such as; GGBS, PFA, micro-silica and the following Sika products:
SikaPump®, Sika® FerroGard®-901, SikaFume®, SikaFiber®, Sika Aer®, Sika® Stabilizer, Sika®-1 WT, Sika® WT-10
We recommend to perform trial mixes to establish the required performance when combining Sika® ViscoCrete®-200 EPC with the above products or other admixtures. Please consult our Sika Technical Department.

Dispensing

Sika® ViscoCrete®-200 EPC is added to the gauging water or simultaneously poured with it into the concrete mixer at the batching plant.
Do not add Sika® ViscoCrete®-200 EPC directly to the dry mix.
For optimum utilization of its high water reduction property we recommend thorough mixing at a minimal wet mixing time of 60 seconds.The addition of the remaining gauging water (to fine tune concrete consistency) may only be started after two-thirds of the wet mixing time to avoid surplus water in the concrete.
Consumption

Recommended Dosage

0.7 - 1.5 % by weight of binder
Higher dosages by weight of binder can be used depending on the mix design, raw materials, climatic conditions and concrete requirements.
Trial mixes must be performed to establish the exact dosage rate required.

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