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Sika® ViscoCrete® RM-800

High Range Superplasticizer with Excellent Slump Keeping Properties for Self Compacting Concrete

Sika® ViscoCrete® RM-800 is a third generation, high performance, dual action superplasticizer, based on Sika’s own ViscoCrete® technology, for the production of self-compacting concrete. Suitable for use in hot and tropical climatic conditions.

Sika® ViscoCrete® RM-800 acts by surface adsorption on cement particles producing sterical hindrance as well as electrostatic repulsion resulting in higher dispersion, flow and retention providingthe following beneficial properties:
  • Self-compacting concrete (S.C.C.)
  • High impermeability and strength due to extremely high water reduction
  • Improved shrinkage and creep characteristics
  • Excellent flowability resulting in minimal placing and compacting efforts
  • Slower rate of carbonation and chloride ingress specially
  • when silicafume or pozzolanic products are used
  • Very good cost / performance ratio
  •  Does not contain chlorides or other steel corrosion promoting ingredients therefore may be used for reinforced and pre-stressed concrete construction
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Usage

  • Site mixed and ready-mix concrete
  • During hot weather for the production of concrete with extended transportation or placing times
  • Concrete requiring retained workability for an extended period
  • Textured surface finish
  • Concrete with extremely high water reduction
  • Self compacting concrete especially where congested steel reinforcement is encountered or for slim elements requiring a high standard of surface finish.
  • High performance / high strength concrete
  High water reduction and excellent flowability have a positive influence on the above mentioned applications.  

Advantages

Sika® ViscoCrete® RM-800 acts by surface adsorption on cement particles producing sterical hindrance as well as electrostatic repulsion resulting in higher dispersion, flow and retention providingthe following beneficial properties:
  • Self-compacting concrete (S.C.C.)
  • High impermeability and strength due to extremely high water reduction
  • Improved shrinkage and creep characteristics
  • Excellent flowability resulting in minimal placing and compacting efforts
  • Slower rate of carbonation and chloride ingress specially
  • when silicafume or pozzolanic products are used
  • Very good cost / performance ratio
  •  Does not contain chlorides or other steel corrosion promoting ingredients therefore may be used for reinforced and pre-stressed concrete construction

Packaging

1000 L flowbin

Colour

Yellowish brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Sika® ViscoCrete® RM-800 follows the requirements of ASTM C494; Type G and EN 934-2
Product Information

Composition

Aqueous solution of modified polycarboxylates

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

~1.13 kg/l at 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® RM-800 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® RM-800 may be combined with all types of Portland cement, microsilica, GGBS, fly ash and the following Sika products:

  • SikaFume®
  • SikaPump®
  • Sika® FerroGard®-901
  • Sika-Aer®
  • Sika® Stabilizer
  • Sigunit® range

We recommend to perform trial mixes to establish the required performance when combined with the above products. Please consult our Sika Technical Department.

Dispensing

Sika® ViscoCrete® RM-800 is added to the gauging water or simultaneously poured with it into the concrete mixer at the batching plant.

Do not add Sika® ViscoCrete® RM-800 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

0.8 - 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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