Anchoring Adhesive

AT – High-Strength Anchoring Adhesive

AT is a two-component, high-solids, 10:1 ratio, acrylic-based adhesive for use as a high strength, anchor-grouting material. Formulated for use in all types of weather, AT is designed to dispense easily and cure at temperatures down to 0°F. Resin and initiator are dispensed and mixed simultaneously through the mixing nozzle. AT meets the physical requirements of ASTM C881, Type I & IV, Grade 3, Classes A, B & C, except AT is a non-epoxy product formulated for fast cure time.

General Information


  • Threaded rod anchoring
  • Rebar doweling
  • Pick-proof sealant around doors, windows and fixtures

CODES: :ICC-ES ER-5791* (CMU & URM); City of L.A. RR25459*;
Florida FL 14832.1*; NSF/ANSI Standard 61 (11 in²/5000 gal);
Multiple DOT listings. The load tables list values based upon results from the most recent testing and may not reflect those in current code reports. Where code jurisdictions apply, consult the current reports for applicable load values. *Applies to all AT products.

APPLICATION: Surfaces to receive adhesive must be clean and free of frost. The base material temperature must be 0°F or above at the time of installation. For information on installations below 0°F contact Simpson Strong-Tie. Mixed material in nozzle can harden in 5–7 minutes. For installations in or through standing water.

More Info

SHELF LIFE: 12 months from date of manufacture in unopened cartridge.

STORAGE CONDITIONS: For best results store between 32°F – 80°F. Partially used cartridges can be stored for a limited time by leaving nozzle in place. To re-use, attach new nozzle.

COLOR: Resin — white, initiator — black. When properly mixed, adhesive will be a uniform gray color.

CLEAN UP: Uncured material — Wipe up with cotton cloths. If desired scrub area with abrasive, water-based cleaner and flush with water. If approved, solvents such as ketones (MEK, acetone, etc.), lacquer thinner, or adhesive remover can be used. DO NOT USE SOLVENTS TO CLEAN ADHESIVE FROM SKIN. Take appropriate precautions when handling flammable solvents. Solvents may damage surfaces to which they are applied. Cured material – Chip or grind off surface.

TEST CRITERIA: Anchors installed with AT adhesive have been tested in accordance with ICC-ES’s Acceptance Criteria for Adhesive Anchors (AC58). In addition, anchors installed with AT adhesive have been tested in accordance with ICC-ES’s Acceptance Criteria for Unreinforced Masonry Anchors (AC60) and NSF/ANSI Standard 61, Drinking Water System Components – Health Effects.

Consistency (77°F) ASTM C 881 Non-sag/thixotropic paste
Heat deflection ASTM D 648 149°F (65°C)
Bond strength (moist cure) ASTM C 882 2,900 psi (2 days)2,970 psi (14 days)
Water absorption ASTM D 570 0.23% (24 hours)
Compressive yield strength ASTM D 695 10,210 psi (7 days)
Compressive modulus ASTM D 695 571,000 psi (7 days)
Gel time (77°F) ASTM C 881 9 min – Thin film


CHEMICAL RESISTANCE Very good to excellent against distilled water and inorganic acids. Fair to good against organic acids and alkalis, inorganic alkalis, and many organic solvents. Poor against ketones. For more detailed information, visit

The performance of this product results from its unique formulation which is proprietary to Simpson Strong-Tie. The product may also be protected by one or more of U.S. Pats. 5,643,994; 5,965,635; 6,228,207, licensed from ITW.


Adhesive Anchoring Installation Instructions







Mechanical Properties

Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete)



  1. Allowable load must be the lesser of the bond or steel strength.
  2. The allowable loads listed under allowable bond are based on a safety factor of 4.0.
  3. Refer to in-service temperature sensitivity chart for allowable load adjustment for temperature.
  4. Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only.
  5. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided
  6. Special consideration has been given to fire-exposure conditions.
  7. Anchors are not permitted to resist tension forces in overhead or wall installations unless proper consideration
  8. Is given to fire-exposure and elevated-temperature conditions.
Shear Load for Threaded Rod Anchors in Norma-Weight Concrete



Téléphone: 450-420-1839