Product Data Sheet Show all documents

Retardan®-2040 L

Retarder for Calcium Sulfate Binders

Retardan®-2040 L is a liquid high-performance set retarder for calcium sulfate based binding materials.

  • No reduction in the final strength
  • Compatible with other additives
  • Ecologically safe and EC1 plus suitable
Safety Data Sheet
Product Data Sheet Show all documents

Usage

Retardan®-2040 L provides excellent performance in the adjustment of setting time and workability of calcium sulfate binders. The product is especially suitable for the following application fields:
  • Fabrication of gypsum boards (plasterboards / wallboards), fibreboards, partition panels, ceiling tiles & gypsum blocks
  • Ready-mix production of floor screeds & self-leveling screeds based on calcium sulfate binders
 

Advantages

The benefits of Retardan®-2040 L include, but are not limited to the following:
  • Very efficient set retardation, already at low dosages
  • Allows the setting-time adjustment of the binder slurry to the needs of the manufacturing process
  • Compatible to a variety of calcium sulfate binder types and to other additives, such as Sika® ViscoCrete® superplasticizers
  • Retardan®-2040 L allows the preparation of large mixes and thus reduces the application costs
  • No reduction of final strength of gypsum products (unlike several fruit acids)
  • Uniform quality ensures a stabile manufacturing process run as well as uniformity and homogeneity of the final gypsum product
  • Ecologically unproblematic, free of formaldehyde

Packaging

IBC of 1’000 kg net
Bulk supply on demand.
Smaller samples for testing are available on request.

Colour

Brownish liquid

Product Details

Product Information

Composition

Aqueous solution of modified amino acid

Shelf life

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

Storage conditions

Storage at temperatures between 0 °C and 40 °C. Protect from direct sunlight, frost and contamination. Use clean drums/containers when delivered in bulk.

Density

Approx. 1.06 g/cm3

pH-Value

7 - 9 at +23 °C

 

Application

Application Information

Compatibility

Retardan®-2040 L may be combined with many other Sika products as well as with most commonly used gypsum additives, like superplasticizer, foaming agent/ defoamer and stabilizer. In combination i.e. with Sika® ViscoCrete® superplasticizer improvements in flowability and setting-time adjustment may be achieved.
Note: Always conduct trials before combining products in specific mixes and contact our technical service for information about specific combinations with Sika® products.

Dispensing

Retardan®-2040 L is added to the gauging water. When used in very low dosage (i.e. during gypsum board production), Retardan®-2040 L may be pre-dissolved in pure water for easier dosing. Please contact our technical service for more information and assistance.
Consumption

Recommended Dosage

Typical dosage range in gypsum board production: 0.007 - 0.07 % by weight of binder. Differences in calcium sulfate 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 setting time of gypsum binders and therefore the dosage of Retardan®-2040 L.
Note: Preliminary testing is required to determine the exact dosage for your specific conditions. Please contact our technical service for more information and assistance.

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