Simpson CI-LPL Long Pot Life Structural Injection Epoxy is a two-component, high-modulus, high-solids, moisture-tolerant epoxy from Simpson engineered for pressure injection, gravity feeding, and flood coat filling of concrete cracks when substrate temperatures are between 60 deg. Fahrenheit (16 deg. Celsius) and 110 deg. Fahrenheit (43 deg. Celsius). This 3-gallon bulk kit chemically bonds with concrete to deliver a structural-grade repair that seals cracks from moisture intrusion and shields embedded rebar from corrosion - making it a go-to solution for demanding hot-weather concrete repair projects where standard injection epoxies fall short.

Key Features

• Meets ASTM C881 and AASHTO M235, Type I/IV, Grade 1, Class C - satisfies the industry standards most commonly required for structural concrete repair specifications, giving contractors and engineers confidence on code-sensitive projects.
• Chemically bonds with concrete and seals cracks from moisture - delivers a true structural repair rather than a surface-only fix, while also protecting embedded rebar from corrosion damage over time.
• Moisture-tolerant formulation - adheres to both dry and damp concrete surfaces, and is approved for underwater pressure-injection applications, so job-site conditions do not have to delay the repair.
• Low surface tension at elevated temperatures - allows the material to effectively penetrate narrow cracks even in hot environments, ensuring thorough crack filling where other epoxies may thicken and stall.
• Formulated for maximum penetration under pressure - compatible with metered pressure-injection equipment, making it well-suited for precision crack repair in structural concrete members.
• Suitable for pressure injection and gravity-feed applications - gives crews flexibility to choose the application method that best fits the crack orientation, width, and site conditions.
• Rated for use in hot environments up to 110 deg. Fahrenheit - maintains workable viscosity and bonding performance during warm-weather and high-temperature repair conditions that would compromise standard epoxies.
• Non-shrink and resistant to oils, salts, mild chemicals, and freeze-thaw cycles - the cured repair holds its integrity against the environmental stressors that concrete structures routinely face over their service life.

Why This Product

• Built specifically for hot-weather structural repair - the long pot life formulation is engineered to remain injectable and fully effective at substrate temperatures up to 110 deg. Fahrenheit, a practical advantage on outdoor or industrial repair projects during summer months or in warm climates.
• Works where moisture is present - unlike standard epoxies that require a bone-dry substrate, CI-LPL bonds reliably to damp surfaces and supports underwater pressure-injection, dramatically reducing downtime spent waiting for conditions to dry out.
• A single kit handles structural bonding and crack sealing in one step - the epoxy chemically bonds with the concrete for a load-bearing repair while simultaneously sealing the crack against future moisture intrusion and rebar corrosion, eliminating the need for a separate sealer application.
• 3-gallon bulk kit is sized for larger or multiple repairs - the kit includes two 1-gallon cans of Component A and one 1-gallon can of Component B, providing the volume needed for substantial crack filling work without repeated small-cartridge changeovers.

Specifications

• MPN: CILPL3KT
• Brand: Simpson Strong-Tie
• Capacity: 3 gal.
• Components: Two-component epoxy
• Substrate Temperature Range: 60 deg.F (16 deg.C) - 110 deg.F (43 deg.C)
• Yield: 231 in.3/US gal. (0.001 m3/L)
• Viscosity: Low-viscosity (2,000 cP)
• Crack Width Range: 1/64" to 1/4" (0.4-6 mm)
• Color: Amber
• Standards Compliance: ASTM C881 & AASHTO M235, Type I/IV, Grade 1, Class C
• Country of Origin: United States

Approved Applications

• Pressure-injection of cracks in structural concrete
• Gravity-feed of cracks in horizontal concrete
• As a low-viscosity epoxy (2,000 cP) for repair of fine to medium width cracks 1/64" to 1/4" (0.4-6 mm) in width
• For structural repairs
• For underwater pressure-injection applications

What's Included

• (2) 1 US gallon (3.8 L) cans of Component "A" (CILPL1A)
• (1) 1 US gallon (3.8 L) can of Component "B" (CILPL1B)

Frequently Asked Questions

What temperature range is CI-LPL Long Pot Life Structural Injection Epoxy rated for?

CI-LPL is formulated for use when substrate temperatures are between 60 deg.F (16 deg.C) and 110 deg.F (43 deg.C), making it well-suited for hot-weather structural repair applications where standard epoxies may not perform adequately.

Can CI-LPL be used on wet or damp concrete surfaces?

Yes. CI-LPL is moisture-tolerant and can be used on both dry and damp surfaces, as well as for underwater pressure-injection applications, without compromising bonding performance.

What crack widths is CI-LPL designed to repair?

CI-LPL is formulated as a low-viscosity epoxy (2,000 cP) capable of repairing fine to medium width cracks ranging from 1/64" to 1/4" (0.4-6 mm) in width. Its low surface tension at elevated temperatures allows effective penetration into narrow cracks.

What is included in the 3-gallon bulk kit?

The 3-gallon bulk kit (CILPL3KT) includes two 1 US gallon (3.8 L) cans of Component "A" (CILPL1A) and one 1 US gallon (3.8 L) can of Component "B" (CILPL1B), providing a complete two-component epoxy system ready for use with metered pressure-injection or gravity-feed equipment.

Downloads and Resources

• Epoxy Crack Injection Guide
• CI-LPL SDS Material Safety data Sheets