Product Data Sheet
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Low Viscosity Injection Epoxy
REZI-WELD LV low viscosity injection epoxy
is a moisture insensitive, very low viscosity, high modulus, high strength, structural injection resin. REZI-WELD LV resists most chemicals and features a unique, innovative unitized packaging concept. It combines two pre-measured components into an easy-to-handle single unit along with a handy wood-mixing paddle (1 gal. unit only). The unitized packaging eliminates mishandling and mismatching of the components on the jobsite.
REZI-WELD LV is designed for gravity feeding or pressure injecting using two-component metering systems, hand-held bulk guns, or pressure pots. It is suitable for injecting fine, non-moving structural cracks for long-term repairs.
When mixed with sand or aggregates, REZI-WELD LV makes an economical, easy-to-use epoxy mortar for patching or repairing defects in concrete substrates, securing machinery base plates to concrete floors, interior non-skid toppings, and structural bonding applications.
- Ideal for pressure injection and gravity feeding.
- Advantageous as a low viscosity, epoxy adhesive binder.
- Bonds cured concrete to fresh or hardened concrete.
- Combines with aggregate to form an interior non-skid topping.
- Resists many industrial chemicals.
- Features low viscosity, high modulus, high strength, self-leveling characteristics.
- Furnished in unitized packaging.
- Can be extended with sand to make an epoxy mortar.
1 Quart (.95 Liter) Units
1 Gallon (3.79 Liter) Units
15 Gallon (56.85 Liter) Units
One gallon (3.8 L) neat covers approximately 85 – 100 ft.2 (2.09 -2.66 m2/L) depending on the surface porosity and end use application. One gallon (3.8 L) mixed 1:1 with dry aggregate yields approximately 350 in.3 (5735 cm3) of grout. One quart neat covers 21.25 – 27.5 ft.2 (0.52 – 0.675 m2/L). Coverage dependent on surface porosity and end use application.
Two years from date of manufacture when stored indoors on pallets in a dry, cool area. Do not store product outside.
- ASTM C881 Type I, II, IV and V, Grade 1, Class B & C
- AASHTO M 235 Type I, II, IV and V, Grade 1, Class B & C
- USDA accepted
- Various department of transportation approvals
7 Day Cure @ 77º F (25º C)
|Typical Data||Test Method|
|Tensile Strength, psi||7000|
|Elongation, %||1.6||ASTM D 638|
|Hardness, Shore D||85||ASTM D2240|
|Flexural Strength, psi||8000|
|Flexural Modulus, psi||520,000|
|Compressive Yield Strength, psi||12,000|
|Compressive Modulus, psi||260,000|
|Bond Strength, psi (2 days)||2500|
|Bond Strength, psi (14 days)||3200|
|Absorption, % (24 hours)||0.13%||ASTM D570|
|Linear Coefficient of Shrinkage||0.004||ASTM D2566|
|Mix Ratio (PBV=Part by Vol.)||2 PBV||1 PBV|
|Wt./gal, lb./gal. (Kg/L)||9.6|
Pot Life [1 Qt. Unit (0.95 L @ 77º F (25º C)]: 30 min.
Mixed Color: Medium Amber
Mixed Viscosity: 2000 Cps
All technical data is typical information, but may vary due to test methods, conditions and operators.
Surface Preparation … All surfaces to be bonded must be free of standing water and completely clean of dirt, rust, curing compounds, grease, oil, paint, waxes, and other materials that would prevent an optimal bond. Concrete should be prepared by mechanical abrading or grit blasting to a sound and profiled surface. Vacuum or blow dust away with oil-free compressed air. Mechanically abrade metal base plates to a bright metal finish. Exposed steel surfaces should be sandblasted and vacuumed clean; if not possible, degrease the surface and use sandpaper or a wire brush to reveal continuous, bright metal.
Mixing … Condition all components to 60º – 85º F (16º – 29º C) for 24 hours prior to use. Use the double-boiler method or store material in a warm room prior to application. Premix each component. Mechanically mix at 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. Avoid air entrapment. Scrape the sides of the container to ensure complete blending of components. Mix only the amount of epoxy that can be applied within the product’s pot life. Pot life will decrease as the ambient temperature and/or mass size increases.
Crack Injecting … Epoxy can be gravity fed into horizontal cracks that are small (1/4″ [6.35 mm] maximum width) and have limited depth. For large injection projects, self-proportioning, mixing, and pressure injection equipment is recommended. For small injection projects REZI-WELD LV STATE may be suitable.
Interior, Non-Skid Topping … Apply at a rate of 100 ft.2/gal. (2.66 m2/L). Then apply layer of sand or grit over epoxy and allow to set. Blow excess sand away. NOTE: REZI-WELD LV IS NOT TO BE USED AS A FINISHED FLOOR COVERING OR PROTECTIVE TREATMENT. Follow standard epoxy flooring system requirements, including water vapor transmission rates.
Aggregates for Epoxy-Resin Mortars … Combine clean, dry aggregates with freshly mixed epoxy in a ratio of 1 part epoxy to 1 to 4 parts, by volume, of graded aggregates (not to exceed six parts sand). Patch thickness should not exceed 4″ (101.6 mm) per lift.
Cleanup … Clean tools and equipment immediately with toluene or xylene. Clean equipment away from all ignition sources and avoid breathing vapors or allowing epoxy-containing solvent to contact skin. Should this material come in contact with the skin, wash thoroughly with soap and water, not solvent.
DO NOT DILUTE. Mix complete units only. Not recommended for use when the concrete and air temperature is below 40º F (4º C) or will drop below 40º F (4º C) within 24 hours. Do not use to seal cracks under hydrostatic pressure. Do not warm epoxy over direct heat. REZI-WELD LV should not be used as an exterior coating, as it is not color stable to ultraviolet light (sun). REZI-WELD LV should not be applied to existing concrete until it is at least 14 days old and has reached 80% of its original design strength.
This epoxy is corrosive. Personal protective equipment is necessary. Unused epoxy will generate excessive heat, especially in large quantities. Unused epoxy should be mixed with dry sand in the container to help lower heat. Refer to Safety Data Sheet for complete health and safety information.
May help contribute to LEED credits:
- MRc9: Construction and Demolition Waste Management