Hind ERA 31





 Hind ERA 31 is a solvent-free, thixotropic, two component adhesive and repair mortar based on a combination of epoxy resins and specially selected filler. Its pasty consistency, allows an easy and versatile application, manufactured as per FIP Specification.


 Hind ERA 31 can be used suitably for:

  • Structural thin film bonding of concrete, metal, wood, etc.
  • Interior, vertical and overhead repair of concrete.
  • Filling blowholes and sealing of concrete surface.
  • Seal cracks around injecting ports prior to pressure injection grouting.
  • Grout bolts, dowels, pins, vertical & overhead, etc.
  • Segmental Bridge Construction.


Hind ERA 31 is very useful in concrete such as

  • Paste consistency ideal for easy application on both vertical & overhead surfaces.
  • Suitable for both dry and damp surfaces.
  • Non-sag product even at high temperatures.
  • Hardens without shrinkage.
  • Excellent adhesion to concrete, masonry, metals and most structural materials.
  • Fast setting and high early strength.
  • High abrasion resistance.


 1.5 Kg. / m2 to 1.8 Kg./ m2 per mm thickness.


 Surface Preparation: All surfaces must be sound, clean, free from all loosely adhering particles. It may be damp or dry but free of standing water, cement laitance, grease, curing compound, foreign particles, etc. should be removed. Surface preparation work may be done by sand-blasting or other mechanical means.

 Mixing: Mix both components together for at least two minutes with a mixing paddle attached to a slow speed electric drill [max 300 R.P. M.] until smooth consistency and even grey colour of the mixture is obtained. Mix only that quantity that can be used within its pot life. To prepare a mortar, slowly add upto one part by loose volume of oven-dried aggregate to one part of mixed Hind ERA 31 until uniform consistency is obtained.

Application: When using as a structural adhesive, apply the mixed Hind ERA 31 to the prepared mating surfaces with a trowel, spatula or by glove protected hand. When applying as a patching mortar, take into account any form of work that may be required. Place the prepared mortar in void and work with a trowel to fill the cavity. Strike off level. On damp surface ensure that the material is well rubbed in.

Cleaning: Clean all tools & equipment immediately after use with, Xylene, Toluene or suitable solvent.


 Optimal working temperature is 5º to 40º C. When working at a higher temperature, the pot life will be shortened. Similarly, when working at a lower temperature, the material will become more difficult to apply and it will take longer time to harden.

Minimum substrate temperature = 5º C.

Maximum thickness of adhesive = 3.5 mm.

Maximum thickness of layer for horizontal surface (mortar) = 30 mm.

Maximum non-sag thickness on vertical surface (mortar) = 10 mm.

Not to be used for sealing cracks under hydrostatic pressure. Epoxy mortar is for interior use only.


Aspect Paste
Colour Grey (System), Comp ‘A’-White, Comp ‘B’-Black
Mix Ratio 2:1 (Comp A : Comp B)
Density 1.60 ± 0.10 kg/ lit (System)
Pot life at 30 °C 30 minutes

Compressive Strength at 30 °C

32-37N/mm2 after 12 hours Curing
55-60 N/mm2 after 24 hours Curing
75-80 N/mm2 after 7days Curing
Bond Strength to Concrete at 30 °C 12-15 N / mm2 after 7days  (Concrete Failure 100%)
Tensile Strength at 30 °C 8-10 N/mm2 after 7 days

10-15 N/mm2 after 14 days

Flexural Strength at 30 °C 10-15 N/m2 after 24 hours of Curing
20-25N /mm2 after 7days of Curing
25-30N /mm2 after 14days of Curing


3 & 6 Kg Container.


 12 months if it is in unopened condition. Should be stored in a cool and dry place away from direct sunlight.


Hind ERA 31 is non-toxic but ingestion is to be avoided. Any splashes to the skin must be washed with water. If contact with eyes occurs, wash well immediately with water and seek medical advice.




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