Features and Benefits

Strong bond

Synthetic resin emulsion additive for repair mortars, plasters, adhesive slurries


  • Flexible
  • Water-retaining
  • Adhesion-enhancing
  • Alkali-resistant
  • Amount required:
    • Pneumatic mortar and adhesive mortar approx. 125 g/m2
    • Repair mortar and plaster approx. 50 g/m2 per mm layer thickness

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As additive for adhesive slurries, adhesive bridges, cement-based plasters and for joint mortars used on faced brickwork, clinker masonry and glass bricks. For ensuring reliable bonding and crack resistance of cement- bound repair mortars.

For improving workability and increasing compaction of the mortar. For increasing flexibility, elasticity and bonding to the surface. For reducing early drying-out.

Step by step

Substrate preparation


Mortars with the addition of CC 81 adhere to all solid, load-bearing and clean mineral surfaces free of substances which can cause separation. Completely remove surface layers of insufficient bearing strength or any  contamina-tion. Dedust and slighty prewet thesurface.



Dilute CC 81 in clean, clear water following the specified mixing ratio (see Technical Data). Use this liquid to prepare the mortar.

Use standard cements (DIN 1164) and aggregates (DIN 4226) with suitable particle sizes continuously graded in the favourable range.

Alternatively, use ready-mixed mortar.

Apply the necessary adhesive bridge, adhesive slurry or pneumatic mortar prepared at the suitable mixing ratio.

Then apply the mortar onto the still wet adhesive bridge and rub over.

Wet aftertreatment may be necessary.