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Sika Sikadur 31CF Normal

Sika Sikadur 31CF Normal


Sikadur-31 CF Normal — Thixotropic Structural Epoxy Adhesive & Repair Mortar

Sikadur-31 CF Normal is a moisture-tolerant, thixotropic, structural 2-component adhesive and repair mortar based on epoxy resins and special fillers. It bonds and repairs concrete, natural stone, steel, wood, ceramics and many other construction materials without primer or sagging on vertical and overhead surfaces.

Key Features

  • Moisture tolerant — can be applied on damp substrates
  • Thixotropic, non-sag up to 15 mm on vertical surfaces
  • No primer needed
  • Hardens without shrinkage
  • Different coloured components (A: white, B: dark grey) for mixing control
  • High initial and ultimate mechanical strength
  • Impermeable to liquids and water vapour
  • Good abrasion and chemical resistance

Applications

  • Structural bonding: concrete, natural stone, ceramics, steel, iron, aluminium, wood, polyester, epoxy, glass
  • Repair mortar: corners, edges, holes, voids, vertical and overhead surfaces
  • Joint filling and crack arris / edge repair

Technical Data

PropertyValue
Chemical baseEpoxy resin
Density (A+B mixed, +23 °C)1.90 ± 0.1 kg/L
Mixing ratio (A : B)2 : 1 by weight or volume
Compressive strength (7 d / +23 °C)~65 N/mm²
Flexural strength (7 d / +23 °C)~35 N/mm²
Tensile strength (7 d / +23 °C)~21 N/mm²
Tensile adhesion (dry concrete, 1 d / +10 °C)> 4 N/mm² (100% concrete failure)
Pot life (200 g / +23 °C)~55 minutes
Max. layer thickness30 mm
Non-sag thickness (vertical)Up to 15 mm
Consumption~1.9 kg/m² per mm thickness
Application temperature+10 °C to +30 °C
ShrinkageNone
Shelf life24 months from production date

Packaging

FormatSize
Pre-batched unit6 kg (A+B)
Pallet480 kg (80 × 6 kg)

Approvals

  • EN 1504-4 structural bonding (CE marked)
  • ASTM D4541 pull-off test
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