Simpson Strong Tie FX‑225 Non-Shrink Underwater Grout is a flowable, high strength, non-metallic, non-segregating grout designed with a special anti-washout admixture, corrosion inhibitors, and polymers. FX‑225 can be pumped or tremied underwater to grout Simpson Strong-Tie® FX 70® and fiberglass pile jackets and as a structural repair mortar for formed applications above and below water without dewatering.
Uses Concrete repairs in marine structures Underwater grouting applications Pile jacket repairs with the FX‑70 structural repair and protection system Seawall repairs without dewatering Form and pour repairs above water
Flowable and pumpable. No de-watering or cofferdams required. Shrinkage compensated. Bonds well to concrete. May be extended with clean, washed
nominal 3/8 in. (9 mm) pea gravel. Ready to use — simply add potable water. Suitable for saltwater marine applications.