Under Water Applications

Advanced Solutions for Demanding Underwater Applications

Underwater applications demand materials engineered to perform where conventional products fail. As an experienced partner, Chem-Crete provides construction chemical solutions built for water exposure, pressure, difficult access, and challenging substrate conditions. Our technologies support contractors, engineers, municipalities, and infrastructure professionals working on concrete and steel structures that require repair, sealing, grouting, or protection below the waterline.

Crack Sealing in Swimming Pools

Cracks in swimming pool structures rarely stay dry long enough for conventional repair materials to bond properly. CHEM-UNDERWATER INJECT and CHEM-GUARD UNDERWATER solve that problem directly. It’s a two-component epoxy injection resin engineered to repair wet structural cracks above the waterline or fully submerged, with a low viscosity and long pot life that lets it flow into and seal the full length of a crack before it begins to cure. For pool decks, shells, and surrounding structural concrete, that means crack sealing in swimming pools can happen without draining the pool or waiting for the surface to dry out first.

Stopping Water Leaks in Hydraulic Structures

Dams, tunnels, retaining walls, and other hydraulic structures put constant pressure on every joint and crack in the concrete, and a leak that starts small rarely stays that way. CHEM-UNDERWATER INJECT and CHEM-GUARD UNDERWATER are formulated to fill and seal voids and subsiding cracks under real injection pressure, stopping water leaks in hydraulic structures at the source rather than masking them on the surface. They meet ASTM C881 Type II, Class B & C, giving engineers a product they can specify with confidence on critical infrastructure.

Sealing Precast Cofferdam

Cofferdams place enormous demands on sealing systems, since the joints between precast sections have to hold back water under constant hydrostatic pressure from day one. CHEM-GUARD UNDERWATER is built for exactly this kind of application. It’s a two-component, 100% solids hydrophilic epoxy gel adhesive that cures and hardens fully submerged, forming a heavy-bodied, non-sagging seal at the joints. Sealing precast cofferdam sections with a product designed to cure underwater removes the guesswork that comes with trying to seal joints in dry conditions that won’t stay dry for long.

Sealing Concrete Pile

Pilings are submerged or intermittently exposed for the life of the structure, which means the seal protecting them has to perform in the same conditions indefinitely. CHEM-GUARD UNDERWATER is purpose-built for pilings, drainage canals, abutments, structural supports, and other steel or concrete elements sitting in fresh or salt water or in splash zone exposure. Sealing concrete pile surfaces with a hydrophilic epoxy gel that hardens underwater protects the structure exactly where conventional coatings struggle most.

Underwater Cementitious Grouting

Grouting work below the waterline calls for a material that flows into place and holds under pressure without washing out. CEM9000 is built for exactly that. It’s a ready-to-use, one-component, non-shrink cementitious grout made from Portland cement, graded silica sand, and flow-improvement compounds, mixed on site with water alone. Its low washability keeps the mix intact as it’s placed underwater, while the non-shrink formulation and early high strength make it suited to underwater cementitious grouting projects like setting bolts and anchor bars, filling cavities, and repairing structural voids.

Key Benefits of Underwater Construction Solutions

Specialized construction materials give professionals a direct way to address the unique challenges of submerged concrete and steel infrastructure.

• Underwater cure performance: CHEM-UNDERWATER INJECT and CHEM-GUARD UNDERWATER are engineered to cure fully submerged, not just tolerate moisture.
• Crack and leak control: CHEM-UNDERWATER INJECT fills and seals cracks and voids under injection pressure, stopping leaks at the source.
• Joint and pile protection: CHEM-GUARD UNDERWATER forms a non-sagging seal on cofferdam joints, pilings, and other submerged steel and concrete elements.
• Grouting flexibility: CHEM-UNDERWATER INJECT doubles as a grouting material for bolts and anchor bars in underwater applications.
• Specification-ready performance: Both products meet ASTM C881 requirements for structural epoxy systems.

Reliable Solutions for Water-Exposed Infrastructure

Underwater construction rewards planning and the right material for the job, not a one-size-fits-all coating. From crack sealing in swimming pools and stopping water leaks in hydraulic structures to sealing precast cofferdam joints, sealing concrete pile surfaces, and underwater cementitious grouting, International Chem-Crete provides technologies engineered specifically for submerged and water-exposed conditions. With the right product matched to the right application, professionals can stop deterioration at the source and protect critical infrastructure for the long term.

Frequently Asked Questions

Que : Can concrete cracks really be sealed while still underwater?
Ans : Yes. CHEM-UNDERWATER INJECT is formulated to cure fully submerged, so cracks in pool structures, tunnels, and hydraulic infrastructure can be injected and sealed without draining or drying the surrounding area first.

Que : How does CHEM-UNDERWATER INJECT stop leaks in hydraulic structures?
Ans : It’s a low-viscosity epoxy resin injected under pressure, where it flows into and fills existing cracks and voids before curing, sealing the leak path at the source rather than covering it on the surface.

Que : How is a precast cofferdam joint sealed underwater?
Ans : CHEM-GUARD UNDERWATER, a hydrophilic epoxy gel adhesive that cures underwater, is applied to the joint and left to harden in place, forming a non-sagging seal even under constant water exposure.

Que : What makes a product suitable for sealing concrete piles?
Ans : A piling sealant needs to cure and perform indefinitely in submerged or splash zone conditions. CHEM-GUARD UNDERWATER is formulated specifically for steel and concrete pilings exposed to fresh or salt water on a constant or intermittent basis.

Que : What makes CEM9000 suitable for underwater cementitious grouting?
Ans : CEM9000 is a one-component cementitious grout formulated with low washability, so it resists dispersing into the surrounding water as it’s placed. Combined with its non-shrink formulation and pumpable consistency, it’s suited to filling cavities, setting anchor bars, and repairing structural voids underwater.