Product Data Sheet Safety Data Sheet Show all documents
SikaRapid®-1 TH

SikaRapid®-1 TH

HARDENING ACCELERATOR

SikaRapid®-1 TH is a liquid hardening accelerator for concrete and mortar. SikaRapid®-1 TH promotes early strength development without negatively influencing final strengths.

SikaRapid®-1 TH provides the following advantages through accelerated hardening of the concrete:
  • Faster turnaround of formwork in precast applications
  • Reduced or eliminated heat or steam curing
  • Fast construction processes and early load bearing capacity
  • Continuous concreting at low temperatures
  • No negative effects on the final strengths
     
When applied with a superplasticizer, SikaRapid®-1 TH will not change the fresh concrete properties produced by the superplasticizer.
SikaRapid®-1 TH does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced concrete.
Product Data Sheet Safety Data Sheet Show all documents

Usage

SikaRapid®-1 TH is especially suitable for any application where fast early strength development plays a major role, or is of crucial importance within 6 to 24 hours. SikaRapid®-1 TH is used for the following applications:
  • Precast concrete
  • Ready- mixed concrete where early demoulding is essential
  • Cold ambient temperatures to achieve sufficient strength gain
  • Slip-formed concrete
  • Ready- mixed concrete where minimum time delays are critical
 

Advantages

SikaRapid®-1 TH provides the following advantages through accelerated hardening of the concrete:
  • Faster turnaround of formwork in precast applications
  • Reduced or eliminated heat or steam curing
  • Fast construction processes and early load bearing capacity
  • Continuous concreting at low temperatures
  • No negative effects on the final strengths
     
When applied with a superplasticizer, SikaRapid®-1 TH will not change the fresh concrete properties produced by the superplasticizer.
SikaRapid®-1 TH does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced concrete.

Packaging

25 L/pail
200 L/drum

Colour

Red liquid

Product Details

Product Information

Composition

Mixture of organic and inorganic complex agents.

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 5 °C and 30 °C. Protect from direct sunlight, frost and contamination.

Density

1.170 – 1.210 kg/L (at +25°C)

pH-Value

~9.0

Total chloride ion content

< 0.01 M-% (chloride-free)

 

Equivalent sodium oxide

< 10.0 M-%
Technical Information

Concreting guidance

The standard rules of good 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 concrete must be cured properly and curing applied as early as possible.

Application

Application Information

Dispensing

SikaRapid®-1 TH is added to the gauging water or added with it into the concrete mixer.
SikaRapid®-1 TH may also be added into the ready- mix truck on site. When added on site the truck mixer shall rotate its drums at maximum revolutions for at least 1 minute per m³ concrete and a minimum of 5 minutes to achieve a uniform mix.The concrete has to be visually checked for uniform consistence before discharging.
Consumption

Recommended dosage

0.5 - 2.0 % by weight of cement

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