Features and Benefits

1-component, anti-corrosion protection and contact mortar „2 in 1”


  • With corrosion inhibitors
  • Excellent adhesion to concrete and steel
  • For concrete class above C12/15
  • Resistant to frost and de-icing road chemicals
  • For vertical and horizontal surfaces
  •  Amount required:
  • As anti-corrosion layer: approx. 2 kg/m2 per 2 layers with the total thickness of approx. 1 mm
  • As contact layer: approx. 1.5 to 2 kg/m2

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Ceresit CD 30 is used for anticorrosion protection of reinforced bars as well as a contact layer on the concrete and reinforced concrete before the application of other system components. Application of CD 30 between concrete and repair mortar enables the achievement of very good parameters of mutual cooperation at the top layer. CD 30 is part of the concrete repair system Ceresit PCC, which additionally consists of CD 24, CD 25, CD 26. The system is designed for filling cracks/voids and re-profiling balconies, as well as for making complex repairs for various types of cement and re-inforced concrete structures, such as balconies, overpasses, reinforced concrete ditches, ceilings, tanks (including waste treat- ment plants), flyovers, frame structures and multi board structures, monolithic structures (including swimming pools), chimneys, etc.

Step by step

Substrate preparation


Ceresit CD 30 adheres to crack-free, load bearing, clean concrete substrates, free from any substance, which may impair adhesion. The substrate should have sufficient compressive strength (concrete class above C12/15) and pull-off strength of minimum 1,0 MPa. Concrete Corroded and carbonated concrete and any loose elements should be carefully removed. Any stains, the layer of cement wash, anti-adhesion agents, old layers should be mechanically removed. The surface of the concrete should be rough and porous, ensuring good adhesion. The substrate should be mechanically prepared e. g. through abrasive blasting, grounding or milling. Before the application of mortar CD 30 the concrete mortar should be sprayed with water without any puddles formed. The substrate should be damp; however, there should be no water pools. Reinforcement The corroded reinforcing bars should have the concrete support removed up to the places which are not corroded The reinforcing bars should have rust removed by sand – blasting to the degree of cleanliness of Sa 2,5 so that they acquire clear, metallic appearance and then they should be cleaned with compressed oil free air. During the application of mortar CD 30 the steel may be damp. The anticorrosion mortar CD 30 should be applied no longer than 3 hours since the time of cleaning the reinforced bars.



Preparation of the mortar: The content of the packaging should be poured to the measured amount of clean water and mixed with the slow rotating drill with a mixer until the homogenous mass without lumps is obtained. Protection of reinforcement: Within the pot life the ready mortar should be applied with the brush on the protruding, cleaned reinforcement. The mortar should be evenly spread to cover the surface of bars. When the first layer becomes hardened (after approximately 3 hours) it should be applied the second layer. Contact layer: In case of the application of the contact layer the ready mortar Ceresit CD 30 should be brushed in the cleaned, damp concrete substrate and previously protected reinforced steel. The next mortar layers of Ceresit PCC system should be applied after contact layer is initially dry, when the mortar has become slightly damp, i. e. within 30–60 minutes after the application. In case of exceeding this time the contact layer should be applied once again, however, only when the previous one is completely hardened.