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- Structural Concrete Repair
- Crack Injection Specification
- Crack Injection Basics for Concrete Crack Repair (NEW)
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epoxy injection block wall ChemCo Systems epoxy crack injection products are specifically designed for machine application (with 2:1 ratios), are all 100% solids and contain no solvents or fillers. We make and stock the industry's widest selection of concrete crack repair adhesives with specialized materials for architectural precast panels, underwater, low and high application temperatures, underwater concrete crack repair, high structure temperatures, chemical and radiation resistance, large voids, narrow cracks, plate bonding, wooden (laminated) beams, slab delaminations and structures subject to vibration during cure. For cracks where the backside cannot be sealed (including some floor slabs), we offer a special slump pumping (very fast-set) resin or alternative non-slumping structural paste adhesives. All ChemCo structural injection adhesives exceed ASTM C 881, Type IV specifications for load bearing applications as well as AASHTO M 235.

ChemCo's large selection of injection seal paste adhesives is 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 whenepoxy injection structural wood beam repair (glu-lam) selecting from our wide variety of viscosities, gel times, temperature ranges, and other handling properties. Other product categories containing pastes or gels usable as surface seal products are in the CCS Bonders catagory. For large lineal footage applications, we make several seals in a 1:1 ratio available in 5-gallon pails for use with automatic metering pumps. StripSEAL™ is a rapid-setting peelable surface seal and is the best choice for architecturally sensitive applications to maintain an unblemished appearance (see description below). For epoxy injection specifications and concrete crack irepair procedures, see the links on the left side of the page.

CCS Injection Product Primary Uses Features
Standard Workhorse injection resin for the repair of structural cracks and delaminations in concrete. Steel plate bonding. Bolt grouting. ASTM C 881, Type IV, (AASHTO M 235). Fast strength, cures under vibration, used in hot climates. Underwater capable.
Standard - High Temperature Ambient Temperature When ambient temperatures exceed 90 F. Relatively long potlife. Structural concrete repair. Steel plate bonding. Bolt grouting. ASTM C 881, Type IV, (AASHTO M 235). Fast strength, cures under vibration.
Low Viscosity 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, (AASHTO M 235). Fast strength, cures under vibration, cold weather suitable. Underwater capable.
Slump Pumping Repair of slabs and walls where opposite side cannot be sealed. Short potlife, extremely fast cure. Extremely fast set, low cost
High Temperature Injection resin for structural concrete crack repair and steel plate bonding at high structure temperatures. ASTM C 881, Type IV, (AASHTO M 235). Industries' highest HDT for hot environments.
Low Exotherm 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. Underwater capable.
Capsule and Pressure Pot Low viscosity, extremely long potlife for repairs using pre-mixed capsules or multi-port pressure pot injection systems. Long mixed useful life.
Underwater and Pile Jacket Underwater repair of concrete structures in fresh or saltwater. Pier and piling repair using steel or fiberglass jackets. ASTM C 881, Type IV, (AASHTO M 235). Best underwater crack injection adhesive.
Seal 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
StripSEAL Fast setting, strippable seal for injection repair in 30-40 minutes. No grinding required. 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. Available in two component cartridges. No odor. Popular with precast manufacturers.
SuperSEAL Very fast setting seal, sets below 30°F, can inject in 45 minutes, deodorized mercaptan cure. Fastest cold weather rigid seal in dry conditions.
DucPutty Hand mixable putty for injection seals and underwater spall repair. Useful for leaks and flowing water, sewer pipe repairs, pier and pile repair and underwater concrete patching.

Can be mixed underwater. Extremely tacky. Kevlar® toughened for mechanical or thermal shock. Won't move after placement (non-slumping).

Injection Resin Properties


epoxy repair wood beam
> Fast strength — up to 5,000 psi compressive yield in less than 5 hours,
> Vibration tolerant during cure — repairs can be made while structure is open,
> Unique solutions for underwater, corrosive and other extreme exposures,
> O VOC concrete crack repair adhesives and seals.

CCS Product Designation Standard Standard High Ambient Low Viscosity Slump Pumping Low Exotherm Low Modulus Underwater High Temperature
Features Workhorse Resin for Structural Concrete Crack 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
Offering the highest quality concrete crack repair injection low viscosity epoxies (and pastes or gels) for over 60 years.
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