NCL Epoxy

NCL Epoxy M306 is a two part, low viscosity epoxy resin for sealing of fine cracks and repairing of cracked concrete to restore the structural strength. The cured NCL Epoxy M306 entirely and completely restores the concrete to its original monolithic conditions. NCL Epoxy M306 is supplied in two bulk containers for use together with two-component injection machine or pressure grout pump.


  • Repairs of cracked concrete
  • Grouting of bolts, anchors, bars etc.,
  • Re-bonding of de-lamination in concrete toppings, tiles, etc., thus avoiding other costly replacement of methods.
  • Jointing of concrete members
  • Consolidation of friable rocks and stones


Mixing Proportion (A:B):   2 : 1
Mixed Viscosity (PaS) at 25ºC: Approximately 800 cps
Pot Life at 20ºC: Approximately 60 minutes
Cure Time at 20 – 25º C: Minimum 24 hours

NCL Epoxy M306 system cured for 7 days at 20ºC has the following properties :-

Tensile Strength (ASTM C 307):  22 N/mm²
Compressive Strength (BS 6319): 60-80 N/mm²
Tensile Strength in Flexure (Din 1164): 30-50 N/mm²
Peel Strength (Din 53282): 4 – 7 N/mm²
Water Absorption (DIN 53475): 20 mg


Providing the cracks to be injected are not too fine, blow them out with compressed air to remove all dusts. Make sure the compressed air is free from oil and water.

After the cracks have been cleaned, bond flanged injection nipples onto the surface with adhesive.   Ensure that the nipples are not blocked with the adhesive used. Dry all wet surfaces before applying the adhesive.

The recommended distance between any two injection points should be between 20cm to 50cm depending on the thickness of concrete structure. Place the injection nipple onto the concrete surface that was cracked all the way through.

Seal the cracked surface between the injection nipples with adhesive. Cracks through the entire thickness of concrete structure should be sealed on both sides.


  1. Make sure that the cracks are still free from dust, etc., preferably by blowing through all the nipples in succession with compressed air. During this operation, all the nipples should be closed off except the one through which the compressed air is being blown and the one adjacent to it.
  2. Inject the   well mixed   NCL Epoxy M306 system into the crack. In   the   case   of vertical   crack, start injection at the lowest nipple and continue until the injection material begins to flow out of the next higher nipple.
  3. Then close off the first nipple and continue injection at the second until the material flows out of the third. Repeat this process until the whole length of the cracks has been injected. Use a grinding wheel to remove the sealing compound and nipples once the injected system has cured.


Resin M306 (Part A):  20 Litre   (Clear Colour)
Hardener M306 (Part B): 10 Litre   (Amber Colour)


Tools and equipment should be cleaned with solvent immediately after use.


One year when stored in a well-sealed container.


NCL Epoxy M306  contains liquid epoxy resin and a polyamine compound. Irritating to eyes, skin and respiratory system. Do not breath in the fumes. Wear suitable gloves and eye/face protection. Wash hands thoroughly with soap and water after use. Keep away from children. Harmful if taken internally.

Note: Information in this data sheet is, to the best of our knowledge. However, we have no control over the method of application and the amount of care taken when using this product and therefore, the liability of NCL Chemical & Equipment is limited to the quality of the delivered material.