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Avanti AV-290 Fast-Set 22oz Cartridge Case 6
Avanti AV-290 Fast Set is a dual-component hydrophobic polyurethane grout for large below-grade voids. It expands on free rise into a rigid, closed-cell foam and does not need water to react.
- Below-grade void filling
- High-flow slowing with a companion Avanti resin
- Pipe and tank abandonment
$319.23
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Avanti AV-290 Fast Set Hydrophobic Polyurethane Grout, 22oz Cartridge
Avanti AV-290 Fast Set is a dual-component hydrophobic MDI polyurethane for filling large below-grade voids in high water flow. Water is not required for the reaction. The foam expands on free rise, cures rigid and closed-cell, and is used for probe grouting, curtain grouting, pressure injection, and pipe or tank abandonment. When high water must be slowed, Avanti specifies AV-290 Fast Set with another injection resin rather than as a stand-alone seal.
Key Features
- 22oz dual cartridge, case of 6: Part A 10.9 fl. oz. (325 ml) and Part B 10.9 fl. oz. (325 ml) per cartridge.
- Dual-component hydrophobic MDI-based polyurethane (Part A amber liquid, Part B pale yellow liquid).
- Injected at a 1:1 Part A to Part B ratio through a static mixer at the point of injection.
- Does not require water to react.
- Reacts within seconds and cures to a rigid, impermeable, closed-cell foam.
- Free-rise expansion of 1,500% to 2,600%.
- Free-rise compressive strength of 20.2 psi; cured density 1.5 lbs/ft³ free rise and 2.5 lbs/ft³ confined.
- Withstands wet/dry cycles.
- Listed as non-toxic on the current technical data sheet.
- Supports probe grouting, curtain grouting, and pressure injection.
- When used to slow high water flows, specify with another Avanti injection resin rather than as a stand-alone seal.
Applications
- Large void filling on the exterior of below-grade structures.
- Pipe and tank abandonments (place in small lifts; the Part A/Part B reaction is exothermic).
- Slowing high water flow in below-grade structures, used with a companion Avanti injection resin.
- Probe grouting, curtain grouting, and pressure injection.
Technical Specifications
| Property | Value |
|---|---|
| Manufacturer / Product Name | Avanti International AV-290 Fast Set hydrophobic polyurethane grout |
| Datasheet Revision | Rev. 03.2025 (AV-290 Fast Set Technical Data Sheet) |
| Product Type | Dual-component, mid-range viscosity, hydrophobic MDI-based polyurethane grout (Part A and Part B) |
| Mix Ratio | 1:1 Part A to Part B, mixed through a static mixer at the point of injection |
| Water Required | None. AV-290 does not require water to react. |
| Free-Rise Expansion | 1,500% to 2,600% |
| Reaction / Cure | Reacts within seconds and cures rigid, impermeable, and closed-cell |
| Uncured Part A | Amber liquid; viscosity 200 cP at 72°F (22°C) ±10% ASTM D-4889; specific gravity 1.250 at 72°F (22°C) ±3%; density 10.43 lbs/gal (1.250 kg/L) ±3%; flash point >200°F (>93°C) |
| Uncured Part B | Pale yellow liquid; viscosity 600 cP at 72°F (22°C) ±10%; specific gravity 1.041 at 72°F (22°C) ±3%; density 8.69 lbs/gal (1.041 kg/L) ±3%; flash point >200°F (>93°C) |
| Cured Density | 1.5 lbs/ft³ (free rise); 2.5 lbs/ft³ (confined) |
| Compressive Strength (free rise) | 20.2 psi |
| Packaging | Dual cartridge, quantity 6. Part A 10.9 fl. oz. (325 ml) and Part B 10.9 fl. oz. (325 ml) per cartridge. Sold as 22oz cartridge case of 6. |
| Storage | 45°F to 95°F (7°C to 35°C) in a dry atmosphere. Keep containers tightly closed. Packaged under dry nitrogen to keep moisture out. |
| Equipment Cleaning | Do not use water. Flush uncured resin with AV-284 Pump Wash. Purge remaining wash and moisture with AV-208 Technical Grade Acetone. Use AV-222 Cleaner for cured resin. |
| Related Avanti Grouts | AV-202 Multigrout is a different Avanti product, not a size of AV-290. Use AV-290 with another Avanti injection resin when the job is high water flow rather than as a stand-alone seal. |
Product documents: AV-290 Fast Set Technical Data Sheet (PDF) | AV-290 FAST-SET Part A Safety Data Sheet (PDF) | AV-290 FAST-SET Part B Safety Data Sheet (PDF)
Frequently Asked Questions
Can AV-290 Fast Set be used for probe grouting?
Yes. AV-290 Fast Set supports probe grouting on below-grade structures. The dual-component hydrophobic foam expands into the void as Part A and Part B react.
Can AV-290 Fast Set be used for curtain grouting?
Yes. AV-290 Fast Set is listed for curtain grouting as well as pressure injection. It is a hydrophobic foam for large below-grade voids, not a hydrophilic crack resin.
Does AV-290 Fast Set expand enough to fill a large void?
Yes. AV-290 Fast Set free-rise expands 1,500 to 2,600 percent. That expansion is how it fills large exterior voids on below-grade structures.
Does AV-290 Fast Set cure to a closed-cell foam?
Yes. AV-290 Fast Set reacts within seconds and cures rigid, impermeable, and closed-cell. The cured foam can take wet and dry cycles.
Should AV-290 Fast Set be used with another Avanti resin on high water flow?
Yes. When AV-290 Fast Set is used to slow high water flows, Avanti specifies it with another Avanti injection resin rather than as a stand-alone seal.
Is AV-290 Fast Set used for pressure injection of below-grade voids?
Yes. AV-290 Fast Set is listed for pressure injection of large below-grade voids. Water is not required for the reaction.
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