Product Data Sheet Show all documents

Sika® ViscoCrete® G-5

High-performance superplasticizer / water reducer for gypsum

Sika® ViscoCrete® G-5 is a high-performance superplasticizer and water reducer, in liquid form, based on Sika® ViscoCrete® polycarboxylate (PCE) polymer technology.

  • Excellent flowability
  • Very low retardation
  • Compatible with other additives
Safety Data Sheet
Product Data Sheet Show all documents

Usage

Sika® ViscoCrete® G-5 is formulated for applications in systems with high calcium sulphate content or pure gypsum binders. The product is especially suitable for the manufacture of gypsum products like:
  • Gypsum fiberboards, building elements, blocks
  • Gypsum boards (also: plasterboards, wallboards)
  • Partition panels, ceiling tiles
 

Advantages

Sika® ViscoCrete® G-5 works based on a combination of electrostatic forces and steric repulsion effects. Thus, solid particles can be effectively dispersed. The benefits of Sika ViscoCrete® G-5  include, but are not limited to the following:
  • High water reduction at low dosage
  • Excellent flowability
  • Rapid adsorption
  • Very low retardation
  • No additional air entrainment
  • Compatible with other additives
  • Free of formaldehyde and ammonia
Especially when utilized for gypsum board production the use of Sika® ViscoCrete® G-5 may result in:
  • Reduced placing- and compacting efforts
  • Shorter drying time
  • Improved shrinkage and creep behavior
  • Higher strength adjustable
  • Reduced water consumption and less waste water
  • Reduced energy consumption and CO2-emission
  • Increased production rate and thus enlarged capacity

Packaging

IBC of 1’000 kg net

Bulk supply on demand

Colour

Milky white to yellowish liquid

Product Details

Product Information

Composition

Aqueous solution of modified polycarboxylate polymers

Shelf life

12 months from date of production, if stored properly in undamaged, unopened, original sealed packaging.

Storage conditions

In dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight, frost and contamination.

Density

Approx. 1.06 g/cm3

pH-Value

Approx. 5.3 at +23°C

Application

Application Information

Compatibility

Sika® ViscoCrete® G-5 may be combined with most commonly used gypsum additives, like foaming agents, accelerators and retarders. In these combinations i.e. with Retardan® additional improvements in flow and retardation may also be achieved.
Important: Always conduct trials before combining products in specific mix designs and contact our Technical Services Department for any additional information and advice concerning specific combinations with other products.

Dispensing

Sika® ViscoCrete® G-5 is added to the gauging water or added with it into the mixer.
Consumption

Recommended Dosage

Dosage range for typical applications: 0.07 - 0.9 % by weight of binder.
Note: Differences in calcium sulphate binder type, raw material sources, calcining methods, age and storage conditions of the binder and other individual parameters at the plant and/or job site can influence the superplasticizer consumption of gypsum based binders. At high dosage and at low temperatures, Sika® ViscoCrete® G-5 can also cause retardation.
Preliminary testing is required to determine the exact dosage for your specific conditions. Please contact our Technical Service Department for more information and assistance.

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