Long Pot Life Structural Epoxy Bonding Adhesive

CHEM-BOND 2 GEL® is a two-component 100% solids structural epoxy adhesive. It is ideal for bonding new concrete to old concrete, steel, and aluminum in any combination. CHEM-BOND 2 GEL® will accept sand to produce a repair material for spalled surfaces, for large voids in walls and ceilings. CHEM-BOND 2 GEL® meets ASTM C-881 specifications.


Technical Data Sheet


  • As structural bonding of new concrete or hydraulic mortar to old concrete.
  • On-situ concrete extensions and modifications to existing structure.
  • Jointless bonding of construction joint in sewage systems, canals, gullies, reservoir basins, and irrigation systems.
  • Closing of shrinkage joints in ceilings, floors, decks, ramps, walls, retaining walls, and concrete pavements.
  • Structural bonding of cement toppings and screeds.
  • Repairs and sealing of various types of concrete cracks which are dormant without any movements, filling cavities, voids, honeycombs, etc.


  • Ready-to-use work packs ensure correct mixing.
  • Excellent bonding properties of new concrete to old concrete.
  • Takes up and transfers tensile and compressive loads.
  • High resistance to water and alkalis.
  • Correctly designed pot life permits efficient progress.
  • Easy application by brush, roller or spray.
  • Solvent-free, no fire hazard.



Product Packaging
CHEM-BOND 2 GEL 2 Gallon (7.57 Liters) Unit

Part A: 1 Gal Can, Part B: 1 Gal Can

10 Gallon (37.58 Liters) Unit

Part A: 5 Gal Pail, Part B: 5 Gal Pail



Technical Data for Unmixed Parts

Property @ 25°C (77°F) Resin – Part A Hardener – Part B Test Method
Solids 100 % 100 %

Color* White Black

Density, Lb/Gal (Kg/L) < 9.7 (1.16) < 13.0 (1.56) ASTM D1475
Mixing Ratio, A : B 1 : 1 By Volume

Shelf Life 2 years 2 years



Technical Data for Mixed Parts

Property (Mixed A & B) Value @ 25°C (77°C) Test Method
Mixed Density, Lb/Gal (kg/L) 10.8 (1.30) ASTM D1475
Mixed Color Grey

Viscosity Gel

Gel Time @ 5 mils, hour 12 – 16 ASTM D2471
Pot Life @ 3-oz (90 milliliter), hour 4

Shore Hardness @ 3 Days, D 84 ASTM D2240
Compressive Strength, Psi (MPa) 10000 (xx) ASTM D695
Tensile Strength, Psi (MPa) 5000 (34.5) ASTM D638
Flexural Strength, Psi (MPa) 8000 (55.2) ASTM D790
Bond Strength, Psi (MPa) > 1500 (10.3) ASTM C882
Elongation, % 8 ASTM D638
Water Absorption 24 hours, % 0.3 ASTM D570
Final Cure, day 7



Limitations: application at ambient temperature below approximately 41°F (5°C) is not recommended. Exposure to temperatures exceeding 149°F (65°C) for prolonged periods is not recommended.


Surface Preparation:


Pre-treatment of Substrate: surface should be clean and sound. The surface must be free of any dust, oil, grease, laitance, curing compounds, or any other contaminants. It may be dry, damp, or wet, but must be free of standing water. The very best results are obtained on dry concrete. Do NOT apply on surfaces, which have been sealed with a permanent type of form oil, curing compound or release agent. Remove these substances before application. The surface temperature must be 41°F (5°C) and rising.


Acid Etching: on new concrete surfaces, remove laitance and un-bonded cement particles by acid etching.  Dampen the surface with tap water.  Use Chem-Crete’s CONCLEAN CCC070 or dilutes Muriatic acid to a 10% solution.  Always add the acid to the water.  Scrub the acid water solution onto the surface at the rate of 50 ft2 / Gal (1.22 m2 / liter).  Allow the solution to sit for 20 minutes or until the acid bubbling stops.  Scrub and flush thoroughly with clean water until all traces of acidity are washed-off from the surfaces.  Remove water by squeegee, vacuum or broom and allow the surface to air dry. Other methods may be adopted if the acid etching method is not feasible, such as shot blasting, sand blasting or mechanical grinding.


Mixing: mix equal volumes of Parts A and B. The gel characteristics of this product allow it to be sculpted to match loose fitting pieces. The long pot life allows ample time for leisurely application. Since the gel will not sag, the cure time of 10 hours is acceptable.


Mixed epoxy must be processed within the pot life. Mixed epoxy will cure much faster in hot weather. Large batches of mixed epoxy will cure much faster than small batches.


Concrete Curing: observe standard curing practice for the newly placed concrete or hydraulic mortars.


Cleaning: remove uncured CHEM-BOND 2 GEL from tools and equipment with suitable solvents such as Xylene, Toluene or CHEM-CRETE BLENDED SOLVENT immediately after use. Cured material may only be removed mechanically.


The product can be stored for minimum of twelve months at temperature from 41°F to 95°F (5°C to 35°C) in the unopened original packaging.  Protect from direct sunlight.


After hardening thoroughly, CHEM-BOND 2 GEL is physiologically harmless. Keep the resin and hardener away from the eyes mouth and skin.  Do not breathe in the vapors.  The uncured mixture can cause irritation of the skin.  For best protection, wear rubber or plastic gloves.  In case of contamination, wipe away resin or hardener immediately from the skin using paper towels and then wash with soap and water or hand cleaning detergent. Empty resin and hardener cans must be disposed according to local city code or regulations.   Under no circumstances empty cans should be used to store food or drink even if they have been thoroughly cleaned. Follow all cautionary direction as printed on container’s labels.


LIMITED WARRANTY:   International Chem-Crete Inc. warrants that, at the time and place we make shipment, our materials will be of good quality and will conform to our published specifications in force on the date of acceptance of the order.


DISCLAIMER:   The information contained herein is included for illustrative purposes only and, to the best of our knowledge, is accurate and reliable. International Chem-Crete Inc. is not under any circumstances liable to connection with the use of information. As International Chem-Crete Inc. has no control over the use to which others may put its products, it is recommended that the products be tested to determine the suitability for specific applications and/or our information is valid in particular circumstances. Responsibility remains with the architect or engineer, contractor and owner of the design, application and proper installation of each product. Specifier and user shall determine the suitability of the product for specific application and assume all responsibility in connection therewith. AM260319