Kemko® Injection

The Kemko® Injection Process

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
for this process.

Injecting repairable cracks can

  • 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.

Applications

  • 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

Kemko® Injection Product

038 Regular IR

Features

ASTM C 881, Type IV, Fast strength, cures under vibration, Used in hot climates.

Primary Uses

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).

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030 HiAmb IR

Features

ASTM C 881, Type IV, Fast strength, cures under vibration

Primary Uses

When ambient temperatures exceed 90 F. Relatively long potlife. Structural concrete repair. Steel plate bonding. Bolt grouting.

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068 LoVis IR

Features

ASTM C 881, Type IV, Fast strength, cures under vibration, Cold weather suitable

Primary Uses

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.

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050 Slump IR

Features

Extremely fast set, Low cost

Primary Uses

Repair of slabs and walls where opposite side cannot be sealed. Short potlife, extremely fast cure.

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165 HiTemp IR

Features

ASTM C 881, Type IV, Industry highest HDT for hot environments

Primary Uses

Injection resin for structural concrete repair and steel plate bonding at high structure temperatures.

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077 Large Void IR

Features

Minimal heat generation, Long mixed useful life, Long travel applications, High chemical and radiation resistance

Primary Uses

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.

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051 Low Modulus IR

Features

good elongation, cures under vibration, and fast hard cure.

Primary Uses

Flexible injection resin for crack repair and sealing.

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026 UW IR

Features

ASTM C 881, Type IV, Best underwater product

Primary Uses

Underwater repair of concrete structures in fresh or saltwater. Pier and piling repair using steel or fiberglass jackets.

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046 QuikSEAL™

Features

Workhorse rigid injection seal

Primary Uses

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.

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136 StripSEAL™

Features

Easy cleanup saves labor costs. Sets at 20°F, Won’t crack.

Primary Uses

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.

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022 SuperSEAL

Features

Fastest cold weather rigid seal in dry conditions

Primary Uses

Very fast setting seal, sets below 30°F, can inject in 45 minutes, deodorized mercaptan cure

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019 LoTempSEAL

Features

Best cold weather seal under damp conditions

Primary Uses

Same day cure, use at low temperature. Very high bond strength and best damp/wet bond of our pastes.

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104 Underwater Putty

Features

Can be mixed underwater

Primary Uses

Hand mixable putty for injection seals and underwater spall repair.

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CCS Product Designation038 Regular IR030 HiAmb IR068 LoVis IR050 Slump IR077 Large Void IR051 LoMod IR026 UW IR165 HiTemp IR
Features Workhorse Resin for Structural RepairStructural Repair at High Ambient TemperatureLow Viscosity for Tight Cracks and Low Application TemperatureFast Initial Set for Slump Pumping and Crack Repair without Back SealFilling Large Voids, Grouting Low Exotherm High Rad. Resist.Flexible Resin, Low Modulus to Allow for Movement Excellent Bonding in Underwater Use. Cures below 40 Degree FHigh HDT for High Service Temperature
Application Temp. Range, Degree F40-9585-120<40-9560-9050-12050-95<40-9060-100
Viscosity, cP, Mixed350350200500250275250500
Gel Time, minutes1425217>210251616
Tensile Strength, psi9,0009,3009,0006,0006,5002,2008,0008,000
Elongation at Break, %22.522.57021.5
Compressive Yield Strength, psi16,50015,60016,00016,00011,00015,00016,500
Compressive Modulus, psi400,000405,000410,000500,000310,000320,000340,000
Flexural Strength, psi12,0010,60012,00011,0008,5009,50011,600
Flexural Modulus, psi550,000320,000490,000450,000250,000300,000550,000
Heat Deflection Temp, Degrees F140140140110108135165
Wet Slant Shear Strength, psi>4,500>4,500>4,500>4,500>4,500>400>4,500>4,500

 

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