Mortars for the Repair of Damaged Concrete

Damaged concrete (spalling, honeycombing, exposed reinforcing) needs a repair mortar matched to the depth of the damage and the conditions it will face in service. Samson's mortar range covers general patching through to corrosion protection and rapid-return-to-service repairs.

The Samson mortar range

  • PatchMortar: a powder product that produces an easily trowelable mortar by the addition of water only. Suitable for 5–20mm applications; for a thicker repair, build it up with a scratch-coat between layers.
  • PatchMortar P: the polymer-modified version, for when less than 10mm thickness is required.
  • CorroBlock: used where corrosion protection of exposed reinforcing steel is required.
  • FastPatch: a quick-setting mortar for early return to service of repaired concrete.
  • FlexiPatch: designed for repairs where reinforcement has too little cover and a level of movement must be accommodated by the hardened patch.

Samson recommends using each of these mortars in conjunction with P3 Primer to ensure an exceptional bond.

Product data

  • P3 Primer: pack size 10kg / 20kg, yield 1kg/mm/m², water 30% by mass (6L per 20kg).
  • CorroBlock: pack size 25kg, yield 2kg/mm/m² (12L per 25kg), water 15% by mass (3.75L per 25kg).
  • PatchMortar / PatchMortar P: pack size 25kg, yield 2kg/mm/m² (12L per 25kg), water 15% by mass (3.75L per 25kg).

Getting the right selection advice

Detailed technical data sheets and selection advice are available on request, since the difference between PatchMortar, PatchMortar P, FastPatch and FlexiPatch often comes down to site-specific factors that are easier to talk through than guess at.

Browse our repairs & water repellency range or request a quote for your repair.