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Epoxy Grout-Patch Kit
REZI-WELD 3/2 grout-patch is a moisture-insensitive, two-component epoxy kit for grouting, sealing base plates, and patching concrete. Part A, the specially formulated epoxy resin and selected, graded aggregates is premixed and packaged in a five-gallon container. A drop-in tray is provided to hold the separately packaged Part B, or activator. This handy, unitized packaging provides its own mixing vessel. Just open the pail, remove the tray, add the activator to the premixed epoxy-aggregate compound and it’s ready to use. It’s that easy.
REZI-WELD 3/2 grout-patch kit is ideal for a variety of construction grouting and patching repair projects. As an epoxy grout, it can be readily poured under base plates or used for anchoring bolts. When applied as a concrete patch, the patching mix serves as a brushed-on primer. The use of a finishing trowel completes the patching application while the primer is still tacky.
- Ready-to-mix, pre-portioned, unitized package.
- Offers a moisture-insensitive, non-shrink, flowable-viscosity grout.
- Provides fast strength gain and high compressive strength with low heat development.
- Resists corrosion, many industrial chemicals, oils, alkalis, some solvents, fuels, and acids.
- Allows up to 60 minutes of work life.
- Stress and impact resistant.
PACKAGING AND COVERAGE
5 gallon pail yields approximately 0.50 ft.³ (3.75 gallons) of grout/patch when Part A and Part B are completely mixed together.
Approximately two years in the original, unopened container when stored in a dry environment at temperatures 40° F to 90° F (4° C to 32° C).
|Compressive Strength |
@ 73° F (23° C):
(ASTM D 695)1 Day
|8,000 psi (55 MPa)|
11,000 psi (75 MPa)
13,000 psi (89 MPa)
|Flexural Strength @ 7 days|
(ASTM D 790)
|4,065 psi (28.05 MPa)|
(ASTM D 570)
Total Water Absorption, 24 hrs.
(ASTM C 882 modified)
7 Day Bond Strength to Concrete
|4,034 psi (27.84 MPa)|
*All technical data is typical information, but may vary due to test methods, conditions and operators.
Surface Preparation … Mechanically abrade all surfaces to be bonded. All surfaces to be bonded must be free of standing water and completely clean of dirt, rust, curing compounds, grease, oil, paint, and unsound materials, which would prevent a solid bond. Vacuum or blow dust away with oil-free, compressed air. Smooth surfaces require abrasive blasting or other mechanical abrasion. Exposed steel surfaces should be abrasive blasted and vacuumed clean; if not possible, degrease the surface and use sandpaper or wire brush to reveal continuous, bright metal.
Mixing … Mix only complete units. Condition all components to 60° F to 85° F (15.6° C to 29.4° C) for 24 hours prior to use. [For maximum flow characteristics, condition REZI-WELD 3/2 to 75° F (23.9° C), prior to use]. Pre-mix each component. Mechanically mix at a slow speed (600-900 rpm) using a drill and Jiffy® Blade or drum mixer for three minutes or until completely mixed while scraping the sides to ensure complete blending of components. The mixed product should be uniform gray in color and not show streaks. Avoid air entrapment. Scrape the sides of the container to ensure complete blending of components. Pot life will decrease as the ambient temperature and/or mass size increases.
Forming … The flowable consistency of REZI-WELD 3/2 requires that forms be used around the base plates to contain the grout/patch. Seal all forms to prevent the grout/patch from leaking. To prevent adhesion of the grout to the forms, apply a suitable bond breaker. To facilitate placement, allow for a 2″ (50.8 mm) formwork head.
Patching … Prime prepared surface by brushing on an epoxy mix at a rate of 400 ft.² gal. Place patching mix while primer is still tacky with trowel or vibrating screed. Strike off, level, and finish with a finishing trowel.
Application Method… Avoid air entrapment by pouring the prepared grout into the forms from one or two sides. Maintain a liquid head to ensure complete contact with the base plate. Place enough material to allow the grout to rise slightly above the underside of the base plate. A 1″ (25.4 mm) minimum grout head is required.
Cleanup … Tools and equipment should be cleaned immediately after application. Clean equipment away from heat, sparks, and open flame with toluene or xylene. Avoid breathing vapors or allowing epoxy-containing solvent to contact skin. Should skin contact occur, wash thoroughly with soap and water.
Do not dilute. Addition of solvents will prevent proper curing. Surface temperatures must be between 40° F and 90 °F (4° C to 32° C). As temperature decreases, flow will also decrease. Cold material may need to be pushed, rodded, or chained to achieve proper placement. Keep container tightly closed until ready for use.
HEALTH AND SAFETY
Unused epoxy will generate excessive heat, especially in large quantities. Unused epoxy should be mixed with dry sand in a container to help lower the heat. Refer to Material Safety Data Sheet for complete health and safety information.
May help contribute to LEED credits:
- IEQ Credit 4.1: Low-Emitting Materials – Adhesives and Sealants
- MR Credit 2: Construction Waste Management
- MR Credit 5: Regional Materials
This material last updated May 2011.