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The KEMKO Injection Process (click for more...)

The Kemko Injection Process (KIP) method of injecting cracks down to 0.002 inches wide (2 mils) for their full depth often uses a Kemko epoxy adhesive without the additional labor time and costs of installing plastic ports. When the injected adhesive cures, it seals the crack entirely and also restores the concrete to its original monolithic integrity. Kemko's epoxy crack injection specification provides a set of guidelines for this process.

Injecting repairable cracks can ... (click for more...)
  > Restore structural and/or design strength to the cracked concrete structure,
  > Eliminate concrete spalling initiated by cracking and aggravated by freeze thaw cycling,
  > Prevent corrosion of reinforcing steel and pre-stress tendons by encapsulating them against moisture,
  > Stop water and fluids leakage through concrete structures (including concrete foundations walls),
  > Repair concrete without the unsightly surface marks often caused by standard surface crack repairs (use StripSEAL),
  > Restore underwater concrete structures,
  > Repair delaminations of topping slabs on floors.

Kemko epoxy crack injection products are specifically designed for machine application using our specially engineered Model B injection pump. All resins are 2:1 ratios, 100% solids and contain no solvents or fillers. We make the industry's widest selection of epoxy crack injection resins and surface seals with specialized materials for architectural precast panels, underwater, low and high application temperatures, high structure temperatures, chemical and radiation resistance, large voids, narrow cracks, plate bonding, wooden beams, and structures subject to vibration during cure. For cracks where the backside cannot be sealed, we offer a special slump pumping (very fast-set) resin or alternative non-slumping structural paste adhesive. All Kemko structural injection adhesives exceed ASTM C 881, Type IV specifications for load bearing applications as well as AASHTO M 235.


> Beams, Columns and Precast Panels
> Buildings, Floors, Walls and Parking Decks
> Bridges, Dams, Piers, and Pilings (includes underwater applications)
> Water Treatment Plants, Tunnels and Pipes
> Tank Bottom Grouting
> Highways and Airport Pavements
> Elevated Slabs and Platforms
> Stadiums and concrete framed highrises
> Slab and overlay delamination repair

Kemko injection seal paste adhesives are used in tandem with the epoxy injection resins. The substrate, surface profile and appearance, application conditions, and project size and complexities are factors to consider when selecting from our wide variety of viscosities, gel times, temperature ranges, and other handling properties. Other Kemko product categories containing possible surface seal products are the Kemko Bonders. For large lineal footage applications, we make several seals in a 1:1 ratio available in 5-gallon pails for automatic metering pumps. StripSEAL is a rapid-setting easily removed peelable seal and is the best choice for architecturally sensitive applications to maintain an unblemished appearance (see description below). It is a product very popular with architectural precast manufacturers as it does not affect surface appearance.

bonded steel plates, external reinforcementconcrete restoration in grain siloCrack Injection

Kemko Injection Product MSDS Primary Uses Features
038 Regular IR MSDS A    MSDS B Workhorse injection resin for the repair of structural cracks and delaminations in concrete. Steel plate bonding. Bolt grouting. Popular for DOT projects (AASHTO M 235). ASTM C 881, Type IV, Fast strength, cures under vibration, Used in hot climates.
030 HiAmb IR MSDS A    MSDS B When ambient temperatures exceed 90 F. Relatively long potlife. Structural concrete repair. Steel plate bonding. Bolt grouting. ASTM C 881, Type IV, Fast strength, cures under vibration
068 LoVis IR MSDS A    MSDS B Injection resin for the repair of cracks and delaminations in concrete. Low viscosity for use with fine cracks down to 5 mils and at low application temperatures. ASTM C 881, Type IV, Fast strength, cures under vibration, Cold weather suitable
050 Slump IR MSDS A    MSDS B Repair of slabs and walls where opposite side cannot be sealed. Short potlife, extremely fast cure. Extremely fast set, Low cost
165 HiTemp IR MSDS A    MSDS B Injection resin for structural concrete repair and steel plate bonding at high structure temperatures. ASTM C 881, Type IV, Industry highest HDT for hot environments
077 Large Void IR MSDS A    MSDS B Long potlife, low exotherm on cure for repair of honeycombed concrete, large voids and delaminations. Excellent for many void-grouting applications under tanks and equipment. Minimal heat generation, Long mixed useful life, Long travel applications, High chemical and radiation resistance
051 Low Modulus IR MSDS A    MSDS B Flexible injection resin for crack repair and sealing. good elongation, cures under vibration, and fast hard cure.
026 UW IR MSDS A    MSDS B Underwater repair of concrete structures in fresh or saltwater. Pier and piling repair using steel or fiberglass jackets. ASTM C 881, Type IV, Best underwater product
046 QuikSEAL™ MSDS A    MSDS B Fast set crack seal, excellent grindability, low odor. Sets up in about an hour for crack injection. Easy mix 1:1 ratio. For overnight set, use Bonder Paste, Long Work Life. Workhorse rigid injection seal
136 StripSEAL™ MSDS A    MSDS B Fast setting, strippable seal for injection repair in 30-40 minutes. No grinding required. No odor. Flexible for use on moving cracks. Peels off like a tape. Often used on architectural precast surfaces. Easy cleanup saves labor costs. Sets at 20°F, Won't crack.
022 SuperSEAL MSDS A    MSDS B Very fast setting seal, sets below 30°F, can inject in 45 minutes, deodorized mercaptan cure. Fastest cold weather rigid seal in dry conditions
019 LoTempSEAL MSDS A    MSDS B Same day cure, use at low temperature. Very high bond strength and best damp/wet bond of our pastes. Best cold weather seal under damp conditions
104 Underwater Putty MSDS A    MSDS B Hand mixable putty for injection seals and underwater spall repair. Can be mixed underwater

KEMKO Product Designation 038 Regular IR 030 HiAmb IR 068 LoVis IR 050 Slump IR 077 Large Void IR 051 LoMod IR 026 UW IR 165 HiTemp IR
Features Workhorse Resin for Structural Repair Structural Repair at High Ambient Temperature Low Viscosity for Tight Cracks and Low Application Temperature Fast Initial Set for Slump Pumping and Crack Repair without Back Seal Filling Large Voids, Grouting Low Exotherm High Rad. Resist. Flexible Resin, Low Modulus to Allow for Movement Excellent Bonding in Underwater Use. Cures below 40° F High HDT for High Service Temperature
Application Temp. Range, Degree F 40-95 85-125 <40-95 60-90 50-120 50-95 <40-90 60-100
Viscosity, cP, Mixed 350 350 200 500 250 275 250 500
Gel Time, minutes 14 25 21 7 >210 25 16 16
Tensile Strength, psi 9,000 9,300 9,000 6,000 6,500 2,200 8,000 8,000
Elongation at Break, % 2 2.5 2 2.5 70 2 1.5
Compressive Yield Strength, psi 16,000 15,600 16,000 16,000 11,000 15,000 16,500
Modulus, psi 400,000 405,000 410,000 500,000 310,000 320,000 340,000
Flexural Strength, psi 12,000 10,600 12,000 11,000 8,500 9,500 11,600
Modulus, psi 550,000 320,000 490,000 450,000 250,000 300,000 550,000
Heat Deflection Temp, Degree F 140 140 140 110 108 135 165
Wet Slant Shear Strength, psi >4,500 >4,500 >4,500 >4,500 >4,500 >400 >4,500 >4,500

crack injection wood beamleak repair epoxy  injection
Structural epoxy concrete crack repair adhesives and metering pumps for the professional contractor.
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