AT-3G™ High-Strength Hybrid Acrylic Adhesive
Product Details
AT-3G is a hybrid, acrylic-based adhesive for anchoring threaded rod and rebar into cracked and uncracked concrete. Ideal for cold weather and wet concrete applications, AT-3G dispenses easily and offers a fast curing time for same-day bolt up. It can be specified for a wide range of in-service temperatures, and maintains its strong bond strength in extreme environments for ultimate design and jobsite flexibility. Tested and code compliant with the IBC and IRC, AT-3G hybrid adhesive is easy to install with the conventional blow-brush-blow hole cleaning method.
Key Features
- Excellent for use in cold weather conditions or applications where fast cure is required
- Recognized per ICC-ES AC308 for threaded rod and rebar anchoring, along with post-installed rebar development and splice length design provisions
- Conventional blow-brush-blow hole cleaning technique using a wire brush — no power brushing required
- Base material installation temperatures down to 0°F (-18°C)
- Use in grout-filled CMU construction
- Use of a vacuum in lieu of compressed air for hole cleaning
- Installation into oversized holes
- Installation in holes drilled with diamond core bits
| Mix Ratio/Type | 10:1 hybrid-acrylic |
| Mixed Color | Gray |
| Base Materials | Concrete — cracked and uncracked |
| Base Material Conditions | Dry, water-saturated, water-filled holes |
| Anchor Type | Threaded rod or rebar |
| Substrate Installation Temperature | 23°F (-5°C) to 104°F (40°C) |
| In-Service Temperature Range | -40°F (-40°C) to 320°F (160°C) |
| Storage Temperature | 41°F (5°C) and 77°F (25°C) |
| Shelf Life | 18 months |
| Volatile Organic Compound (VOC) | 41 g/L |
Included Parts
| Model No. | Option | Packaging Qty. | Carton Qty. | Compatible Tools |
|---|---|---|---|---|
| AT3G10 | 9.5 oz. coaxial cartridgeIncludes AMN19Q mixing nozzle | 1 | 6 | CDT10S dispensing tool / AMN19Q mixing nozzle |
| AT3G30 | 28 oz. side-by-side cartridgeIncludes AMN19Q mixing nozzle | 1 | 5 | ADT30S, ADTA30P or ADTA30CKT dispensing tool / AMN19Q mixing nozzle |
Applications
- Threaded rod anchor and rebar dowel installations in cracked and uncracked concrete under a wide variety of environmental installation and use conditions
- Installation in downward, horizontal and upwardly inclined (including overhead) orientations
- Installation down to 0 F (-18 C)
- Qualified for use in structures assigned to Seismic Design Categories A through F
Installation
- Surfaces to receive adhesive must be clean per approved hole cleaning method.
- Base-material temperatures must be 23°F (-5°C) or above at the time of installation.
- To warm cold adhesive, store cartridges in a warm, uniformly heated area or storage container. Do not immerse cartridges in water or use microwave to facilitate warming.
- Mixed material in nozzle can harden in 2-3 minutes at temperatures of 70°F (21°C) and above.
- Use only Simpson Strong-Tie mixing nozzles in accordance with Simpson Strong-Tie instructions. Modification or improper use of mixing nozzle may impair AT-3G adhesive performance.
- For full instructions, see Adhesive Anchoring Installation Instructions.
Clean Up
- Uncured material — Wipe up with cotton cloths.
- Cured material — Chip or grind off surface.
Test Criteria
- AT-3G has been tested in accordance with ICC-ES 308, ACI 355.4 and applicable ASTM test methods.
Cure Schedule
| Base Material Temperature °F |
Base Material Temperature °C |
Gel Time (mins.) | Cure Time (hrs.) | ||
|---|---|---|---|---|---|
| 23 | -5 | 50 | 5 | ||
| 32 | 0 | 25 | 3 1/2 | ||
| 41 | 5 | 15 | 2 | ||
| 50 | 10 | 10 | 1 | ||
| 59 | 15 | 6 | 40 min. | ||
| 68 | 20 | 3 | 30 min. | ||
| 86 | 30 | 2 | 30 min. | ||
| 104 | 40 | 2 | 30 | ||
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AT-3G Typical Properties
| Property | Class A (35°–40°F) | Class B (40°–60°F) | Class C (>60°F) | Test Method | |
|---|---|---|---|---|---|
| Consistency | Non-sag | Non-sag | Non-sag | ASTM C881 | |
| Bond Strength, Slant Shear | Hardened-to-Hardened Concrete, 2-Day Cure1 | 2,800 psi | 2,800 psi | 2,800 psi | ASTM C882 |
| Hardened-to-Hardened Concrete, 14-Day Cure1 | 3,200 psi | 3,100 psi | 3,250 psi | ||
| Compressive Yield Strength, 7-Day Cure2 | 10,300 psi | 13,400 psi | 15,000 psi | ASTM D695 | |
| Compressive Modulus, 7-Day Cure2 | 1,400,000 psi | 1,550,000 psi | 1,650,000 psi | ASTM D695 | |
| Heat Deflection Temperature, 7-Day Cure3 | 258°F (126°C) | ASTM D648 | |||
| Glass Transition Temperature, 7-Day Cure3 | 237°F (114°C) | ASTM E1640 | |||
| Decomposition Temperature, 24-Hour Cure3 | 480°F (250°C) | ASTM E2550 | |||
| Water Absorption, 24-Hours, 7-Day Cure3 | 0.90% | ASTM D570 | |||
| Shore D Hardness, 24-Hour Cure3 | 81 | ASTM D2240 | |||
| Linear Coefficient of Shrinkage, 7-Day Cure3 | 0.000 in./in. | ASTM D2566 | |||
| Coefficient of Thermal Expansion3 | 2.6 x 10-5 in./in.°F | ASTM C531 | |||
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Design Information and Load Tables
Related Links
- Anchoring Systems Technical and Installation Notes
- Adhesive Cartridge Estimator
- Anchor Designer™ Software
- Strong-Rod™ Uplift Restraint System - Anchorage Adhesives
- Adhesive Anchor Installation Training
Catalog Pages
Related Literature
Code Reports & Compliance
Drawings
| DWG | DXF | RFA | IFC | SAT | |||
|---|---|---|---|---|---|---|---|
