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Sika® Stabilizer-180 RCA GB

RETURNED CONCRETE ADMIXTURE

Sika® Stabilizer-180 RCA GB is Sika's solution for more sustainable returned concrete processing. Sika® Stabilizer-180 RCA GB is a fast acting powdered admixture used to convert fresh concrete into a very low strength granular material that is easy to process and reuse.

  • Easy and economical way to manage returned concrete
  • Slows or stops cement hydration to give a low strength, granular material
  • Removes the need for off-site processing of returned concrete
  • Reduced need for on-site concrete crushing.
  • Improve safety by removing the use of heavy machinery to process hardened concrete
  • Resulting granulate can be mixed back into concrete
  • Chloride free
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Product Data Sheet
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Usage

Sika® Stabilizer-180 RCA GB is suitable for use by concrete producers to process returned or unused concrete. Once mixed into plastic concrete, the resulting dry, granular concrete cures into a low strength material allowing easy processing.  

Advantages

  • Easy and economical way to manage returned concrete
  • Slows or stops cement hydration to give a low strength, granular material
  • Removes the need for off-site processing of returned concrete
  • Reduced need for on-site concrete crushing.
  • Improve safety by removing the use of heavy machinery to process hardened concrete
  • Resulting granulate can be mixed back into concrete
  • Chloride free

Packaging

30 x 0.6 kg soluble bags in a sealed plastic pail, 18 pails per pallet.

Colour

White powder

Product Details

Sustainability / Certifications / Approvals

ENVIRONMENTAL INFORMATION

Generates usable material and diverts waste from landfill. Lowers carbon footprint by eliminating the need for energy intensive processing and transport.
Product Information

Shelf Life

12 months from date of manufacture, when stored in unopened, original packaging.

Storage Conditions

Store in a dry environment protected from moisture and sunlight. Damaged, exposed or unprotected packaging will absorb moisture resulting in an unusable product.
Technical Information

Specific Advice

  • Mixer trucks that have difficulty discharging low-slump or no-slump concrete may require manual assistance in discharge, or may not be suitable for the use of Sika® Stabilizer-180 RCA GB.
  • Do not open soluble bag
  • Do not wet-handle Sika® Stabilizer-180 RCA GB as film in water-soluble pack will dissolve.
  • Once Sika® Stabilizer-180 RCA GB is added to the plastic concrete, discharge prior to reloading. Concrete treated with Sika® Stabilizer-180 RCA GB is no longer suitable for the original intended use.
  • In case of Sika® Stabilizer-180 RCA GB spillage from broken packaging: sweep or vacuum Sika® Stabilizer-180 RCA GB prior to cleaning with water.

Application

Application Information

Restrictions

Overdosing may result in the concrete returning to a plastic state
Consumption

Recommended Dosage

Concrete SlumpTypical dosage (bags/m3)
<180 mm (S1-S3)1
>180 mm (S4+)1.5 - 2
Application steps

MIXING

DO NOT add any water to the truck during the returned concrete process.

  • Determine the volume and slump of returned concrete to be treated. Based on the condition and slump of the concrete the optimum dose can be determined. Please refer to "Specific Advice" under the Technical Information section for more details.
  • With the drum in discharge mode bring the concrete to the rear of the drum to the point of discharge. Place the determined quantity of soluble bags onto the concrete and mix at full speed.
  • The required mixing time is variable; for concrete volumes up to 3 m³ the typical mixing time is 3 minutes. Add one minute for each additional cubic yard of concrete treated. You will hear the change as the concrete becomes stiff and granular in the mixer.
  • Discharge the granular material in piles not exceeding 0.5 m³. Excess pile size will contribute to compaction resulting in difficult processing.
 
  • Mechanically break the piles anytime within 24 hours to prevent compaction. The longer the pile is left static, the more difficult the material will be to process
  • After 24 hours the processed material can be stored or used as desired.

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