| 03 64 23 |
No. 393 |
 |
LOW-VISCOSITY EPOXY INJECTION PRE-PAK
Description
REZI-WELD (IP) Injection
Pre-Pak is an amber-colored, two-component, low-viscosity, rapid
setting, penetrating epoxy compound. REZI-WELD (IP) is easy-to-use
and offers high-modulus and high-strength characteristics. It
effectively bonds cured concrete or metal to concrete. REZI-WELD
(IP) is resistant to most chemicals and moisture insensitive.
Uses
REZI-WELD (IP) Injection
Pre-Pak is designed to be either gravity fed or pressure injected
into concrete cracks for restoration of bridges, buildings, highways
or any concrete construction requiring repair.
Features and Benefits
|
Packaging
10 oz. (295.74 ml) Cartridge
Convenient, easy-to-use REZI-WELD (IP) Injection Pre-Pak is pre-packed
in two-component, barrier type cartridges. Each cartridge contains
10 ounces (295.74 ml) of low-viscosity epoxy when properly mixed.
Once mixed, cartridge may be inserted into a standard caulking
gun for application.
Shelf Life
One (1) year in unopened,
damage-free cartridges stored in a dry environment between 40º
- 95ºF (4º - 35ºC).
Specifications
|
TECHNICAL DATA*
|
Property 7 Day Cure @ 77ºF (25ºC) |
Typical Data | Test Method |
| Tensile Strength, psi | 6,000 (41.4 MPa) | ASTM D 638 |
| Elongation, % | 1.6 | ASTM D 638 |
| Hardness, Shore D | 85 | ASTM D 2240 |
| Flexural Strength, psi | 7,000 (48.2 MPa) | ASTM D 790 |
| Flexural Modulus, psi | 480,000 (3,310 MPa) | ASTM D 790 |
| Compressive Yield Strength, psi | 11,000 (75.8 MPa) | ASTM D 695 |
| Compressive Modulus, psi | 240,000 (31,655 MPa) | ASTM D 695 |
| Bond Strength, psi (2 days) | 2,500 (17.25 MPa) | ASTM C 882 |
| Bond Strength, psi (14 days) | 3,200 (22.08 MPa) | ASTM C 882 |
| Absorption, % (24 hours) | 0.15% | ASTM D 570 |
| Linear Coefficient of Shrinkage | 0.005 | ASTM D 2566 |
| Bolt Pull Out, max. Lbs.(kg) |
10,000 (4,536 kg) concrete failure |
ASTM C 900 |
| Component Properties | Resin | Hardener |
|
Mix Ratio (PBV=Part by Vol.) Appearance Wt./gal, lbs./gal. (Kg/L) |
2.27 PBV Clear 12.6 (1.51 Kg/L) |
1 PBV Amber 8.2 (.98 Kg/L) |
|
Viscosity, cps Final Color Pot Life (10 oz. cartridge) @ 77ºF (25ºC) |
1,000 (mixed) Light amber (mixed) 20 mins. |
|
| * All technical data is typical information, but may vary due to test methods, conditions and operators. | ||
Application Tools
 Caulking Gun |
APPLICATION
Surface Preparation...Mechanically abrade all surfaces to be bonded.
Substrates must be dust free, clean and void of all contaminants,
and should be dry for optimal adhesion. All steel surfaces must
be abraded to a white metal finish. Prior to injecting, all cracks
must be cleaned either by blowing out with oil free compressed
air or vacuumed to remove all contaminants and loose particles.
Mixing Note…Cartridge
must be between 60ºF-85ºF (16ºC-29ºC) at time
of mixing. (See PRECAUTIONS). Use the double-boiler method or
store material in a warm room, prior to application.
CAUTION: WEAR GLOVES AND SAFETY GLASSES OR OTHER EYE PROTECTION
DURING ALL
OPERATIONS. Consult and follow all mixing and application directions
included with unit.
INJECTION: Epoxy can be gravity fed into
horizontal cracks that are small, 1/4" (6.35mm) maximum width,
and
have a limited depth. Inject epoxy from caulking gun into the
crack and fill to the top. Allow gravity to pull epoxy
into the void. Top off with more epoxy and finish. Repeat as necessary.
REZI-WELD (IP) is not to be used for sealing cracks while under hydrostatic pressure. NOTE: For larger injection projects, a self-proportioning, mixing and pressure injection piece of equipment is mandatory, and a low-viscosity epoxy adhesive with an extended pot life, such as REZI-WELD™ LV Low Viscosity Injection Epoxy from W. R. MEADOWS (Data Sheet No. 392) may be used.
OTHER BONDING: To bond cured concrete or metal to concrete, apply sufficient amount to the properly prepared surface and join together immediately. No firm clamping pressure is necessary beyond what will hold the parts in place. NOTE: All concrete surfaces to be bonded to should be at least 28 days old, due to continued shrinkage of new concrete for 28 days.
Clean up…Tools and equipment should be cleaned immediately with Xylene or Toluene. Clean equipment away from heat, sparks and open flame 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.
Precautions
DO NOT DILUTE. The cartridge
must be between 60º-85ºF (16º-29ºC) at the
time of mixing. Never warm epoxy over direct heat. Not recommended
for use when the concrete temperature has been below 40ºF
(4ºC) for the past 24 hours. REZI-WELD (IP) is not to be
used on exterior surfaces as a coating as it is not resistant
to ultraviolet rays.
Health and Safety
Refer to Material Safety Data Sheet
for complete health and safety information.
This material last updated July, 2004.
