Product Data Sheet Safety Data Sheet Show all documents

SikaTard® R

Set retarding admixture

SikaTard® R is a liquid admixture developed for the control of cement hydration. SikaTard® R retards/stabilises sand/cement masonry mortars and concrete mixes.

SikaTard® R retards the hydration of the cement.
  • Strong retardation to enable masonry laying to continue over long periods of time
  • Delays the set of the mortar, however the retarding effect declines once in place as moisture evaporates and migrates due to the suction of the masonry enabling setting and curing to occur as normal
  • Provides higher ultimate strengths
Product Data Sheet Safety Data Sheet Show all documents

Usage

SikaTard® R allows the production of retarded/stabilised sand/cement masonry mortars.
SikaTard® R is mainly used for the following applications:
  • A wide range of applications where set retarding/stabilising is requested
  • In conjunction with Sika® Intraplast®-125 M to provide masonry mortars for laying brick/blocks manufactured from absorbent materials such as clay, sand-line and concrete.
 

Advantages

SikaTard® R retards the hydration of the cement.
  • Strong retardation to enable masonry laying to continue over long periods of time
  • Delays the set of the mortar, however the retarding effect declines once in place as moisture evaporates and migrates due to the suction of the masonry enabling setting and curing to occur as normal
  • Provides higher ultimate strengths

Packaging

200 litre drum, 1000 litre IBC

Colour

Brown Liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS EN 934-3 Table 3
DoP 50214436, certified by Factory Production Control Body 1029 and provided with the CE mark
DoC 54780284, certified by Factory Production Control Body 0120 and provided with the UKCA mark
Product Information

Chemical Base

Hydrocarboxylate blend

Shelf Life

12 months from date of production if stored properly in undamaged unopened, original sealed packaging, in dry conditions at temperatures between +5°C and +25°C. Protect from direct sunlight and frost.

Storage Conditions

Protect from direct sunlight and frost

Specific gravity

1.18 kg/L

Total Chloride Ion Content

<0.1 % w/w (chloride free)

Equivalent Sodium Oxide

<4.0 % w/w (alkali content)

 

Application

Application Information

Dispensing

SikaTard® R is added to the gauging water or added with it into the mortar/concrete mixer.

Compatibility

SikaTard® R may be combined with many other Sika products.
Important: Always conduct trials before combining products in specific mixes and contact our Technical Service Department for information and advice about any specific combinations.
Consumption

Recommended Dosage

Typically 0.1-0.5 % by weight of cement for concrete mixes

Typically 0.5–2.0 % by weight of cement for mortar mixes
Application steps

APPLICATION INSTRUCTIONS

The standard rules of good mortar/concreting practice, concerning production and placing, are to be followed.
Laboratory trials shall be carried out before concreting on site, especially when using a new mix design or producing new concrete components.

 

Fresh mortar/concrete must be cured properly and curing applied as early as possible.

Dosage rates to achieve the desired working life will depend on the type of mortar required, ambient temperature, sand quality and the desired workability.

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