REZI-WELD GEL PASTE CONSTRUCTION EPOXY QUART UNIT

Description

REZI-WELDTM GEL PASTE
Gel Consistency-Thixotrophic, Multi-Purpose Construction Epoxy
DESCRIPTION
REZI-WELD GEL PASTE is a high viscosity, rapid
setting, thixotrophic, structural, epoxy-based, chemical
anchoring/bonding adhesive and injection resin. REZIWELD
GEL PASTE provides high mechanical
properties and bond strength to concrete and various
other substrates. REZI-WELD GEL PASTE is a twocomponent,
moisture insensitive construction epoxy,
which can be troweled, brushed, injected, or pumped.
REZI-WELD GEL PASTE is an easy-to-mix, easy-toapply
paste ideal for filling cracks, anchoring, doweling
and making small patches and general repairs in
horizontal, vertical and overhead concrete surfaces. It is
also suitable for surface sealing prior to pressure
injection. When used as an adhesive, REZI-WELD GEL
PASTE fills all voids between surfaces to be bonded.
FEATURES/BENEFITS
•
Patches and repairs vertical or overhead concrete
surfaces.
•
Fills all gaps between surfaces to be bonded … unlike
liquid epoxy adhesives, which might run out and
reduce the bond area.
•
Easy to mix and apply with its trowel-grade
consistency.
•
Offers high viscosity, high modulus and high strength
characteristics.
•
Color-coded, innovative, unitized bulk packaging
assures proper mixing of two components.
•
Excellent bond strength suitable for cap sealing.
•
Available in side-by-side and universal cartridges.
SPECIFICATIONS
•
ASTM C 881, Type I, II, IV & V, Grade 3,
Classes B & C
•
AASHTO M 235, Type I, II, IV & V, Grade 3,
Classes B & C
•
Various Departments of Transportation Approvals
PACKAGING
8.3 oz (250 ml) Universal Cartridge
1 Quart (.95 Liter) Unit
1 Gallon (3.79 Liter) Unit
2 Gallon (7.58 Liter) Unit
10 Gallon (37.85 Liter) Unit
STORAGE:
40-95
°
F (4-35
°
C)
COVERAGE:
1 gal neat yields 231 cubic inches
FOR INDUSTRIAL AND PROFESSIONAL USE ONLY
APPLICATION
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
sanding or other mechanical abrasion. 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 (Bulk Units)
… Condition all components to 60-
85° F for 24 hours prior to use. Use the double-boiler
method or store material in a warm room prior to
application. Pre-mix 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. The mixed product should be uniform gray in
color and not show streaks. Avoid air entrapment. Mix
only very small quantities by hand for a minimum of three
minutes or until sufficiently blended together using the
supplied stirring stick. Scrape sides of the container to
ensure complete blending of the components. Mix only the
amount of epoxy that can be applied within the product’s
potlife. Potlife will decrease as the ambient temperature
and/or mass size increases.
(For
cartridge
mixing and application instructions, see
instruction sheet included inside the cartridge packaging
unit.)
METAL ANCHORS IN PREFORMED HOLES IN
CONCRETE
… Preformed holes should be approx. 1/4"
(6.35 mm) larger in diameter than the anchor bolt diameter.
The depth of the hole should be 10-15 times the bolt
diameter. Fill the hole from the bottom up, about half way,
with mixed epoxy and place the bolt, dowel or rebar. Top
off with more epoxy and finish. All anchoring or doweling
configurations must be approved or designed by an
engineer.
CRACKS IN VERTICAL OR OVERHEAD
STRUCTURES
… For non-moving cracks and joints, use a
trowel to apply the paste full depth and strike off flush at
the surface in a single pass. For structural crack injection
repairs, use a dual-component gel pump.
REZI-WELD
TM
GEL PASTE
Gel Consistency-Thixotrophic, Multi-Purpose Construction Epoxy
CSI Code: 03 63 00
NO. 391 MARCH 2007
(Supersedes September 2005)
CONTINUED ON REVERSE SIDE…
W. R. MEADOWS, INC.
P.O. Box 338 • HAMPSHIRE, IL 60140-0338
Phone: 847/214-2100 • Fax: 847/683-4544
1-800-342-597
HAMPSHIRE, IL / CARTERSVILLE, GA / YORK, PA
FORT WORTH, TX / BENICIA, CA / POMONA, CA
GOODYEAR, AZ / MILTON, ON / ST. ALBERT, AB
PATCHES IN CONCRETE STRUCTURES
…
GEL PASTE makes a high-strength material for
patching, topping, grouting and repairing spalls
and other defects in concrete. Average thickness
of the patch or topping should be no greater than
1/4" to 1/2" (6.35 to 12.7 mm) per lift, not to
exceed a total depth of 1 ½”.
BONDING FRESH CONCRETE TO
HARDENED CONCRETE OR HARDENED
CONCRETE TO HARDENED CONCRETE
…
Use a stiff masonry brush to apply a layer of
mixed epoxy to concrete surfaces. Application
rate should be 85-100 ft
2
/gal. Place fresh or
hardened concrete to mixed REZI-WELD GEL
PASTE prior to epoxy adhesive becoming tackfree.
If REZI-WELD GEL PASTE becomes tackfree
prior to application of fresh or hardened
concrete, consult a W. R. MEADOWS
representative. NOTE: Cured concrete is defined
as concrete that has achieved a minimum 80%
compressive strength.
OTHER BONDING
... To bond metal to
concrete, apply a layer of the adhesive at 85-100
ft
2
/gal. (20 mils) to the prepared surfaces and join
immediately. Clamping pressure, beyond what
will hold parts in place, is not necessary.
SURFACE SEALING
… Apply mixed epoxy
over entire length of crack to be pressure injected.
Ensure complete coverage of the crack face to
avoid leaking. Adjacent concrete surfaces must be
mechanically abraded to ensure a proper bond.
Allow for suitable cure time prior to injecting.
CLEAN UP
… Clean tools and equipment
immediately with Toluene or Xylene. Clean
equipment away from all ignition sources and
avoid breathing vapors or allowing epoxycontaining
solvent to contact skin. Should this
material come in contact with the skin, wash
thoroughly with soap and water, not solvent.
PRECAUTIONS
DO NOT DILUTE. Mix complete units only. Not
recommended for use when the concrete
temperature has been below 40
°
F (4
°
C) for the
past 24 hours. Do not use to seal cracks under
hydrostatic pressure. Do not warm epoxy over
direct heat.
TECHNICAL DATA*
The following physical properties were determined at a 1:1 mix ratio of A:B by
volume, cured at 77° F (25° C) & 50% RH
Color:
Part A…White
Pot life:
45 minutes at 77°F
Part B…Black
Cure time:
7 days at 77°F
Mix ratio:
1:1 by volume
Shelf life:
1 year in unopened container
*All technical data is typical information, but may vary due to testing methods,
conditions and operators.
1
Independent reports are available upon request.
SAFETY AND TOXICITY
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 Material Safety Data Sheet for complete health and safety
information.
TO VERIFY MOST RECENT TECHNICAL
DATA SHEET IS BEING USED,
ADDITIONAL RESTORATION PRODUCTS
FROM W. R. MEADOWS CAN ALSO BE
FOUND BY VISITING OUR WEBSITE.
PAGE 2 … REZI-WELD GEL PASTE #391 … MARCH 2007
Test Method Actual Required per
ASTM C 881-99, TYPE IV
Gel Time
Per ASTM C 881-99 45 minutes Minimum 30 minutes
Viscosity
Per ASTM C 881-99 Mixed 1/2” Bead-No Sag Minimum 1/4” Bead-No Sag
Compressive Strength
Per ASTM D 695-96
@ 1 day
@ 7 days
9,000 psi (62 MPa)
11,500 psi (79 MPa)
Not Required
Minimum 10,000 psi (70 MPa)
Compressive Modulus
Per ASTM D 695-96
@ 7 Days 400,000 psi (2758 MPa) Minimum 200,000 psi (1,400 MPa)
Slant Shear Bond Strength
Per ASTM C 882
1
, Moist Cured
@ 2 days (Old to Old Concrete)
@ 14 days (Old to Old Concrete)
@ 14 days (New to Old Concrete)
1,500 psi (10 MPa)
2,000 psi (14 MPa)
2,500 psi (17 MPa)
Minimum 1,000 psi (7.0 MPa)
Minimum 1,500 psi (10.0 MPa)
Minimum 1,500 psi (10.0 MPa)
Tensile Elongation
Per ASTM D 638-98
1
@ 7 days 1.5% Minimum 1%
Heat Deflection Temperature
Per ASTM D 648-98
1
@ 7 days 125° F (53° C) Minimum 120° F (50° C)
Linear Coefficient of Shrinkage
Per ASTM D 2566
1
@ 7 days 0.003 Maximum 0.005
Water Absorption
Per ASTM D 570-98
1
@ 7 Days 0.51% w/w Maximum 1.0% w/w
LIMITED WARRANTY
“W. R. MEADOWS, INC. warrants at the time and place we make shipment, our material will be
of good quality and will conform with our published specifications in force on the date of
acceptance of the order.” Read complete warranty. Copy furnished upon request.
Disclaimer
The information contained herein is included for illustrative purposes only, and to the best of our
knowledge, is accurate and reliable. W. R. MEADOWS, INC. cannot however under any
circumstances make any guarantee of results or assume any obligation or liability in connection
with the use of this information. As W. R. MEADOWS, INC. has no control over the use to which others may put its
product, it is recommended that the products be tested to determine if suitable for specific application and/or our
information is valid in a particular circumstance. Responsibility remains with the architect or engineer, contractor and
owner for the design, application and proper installation of each product. Specifier and user shall determine the
suitability of products for specific application and assume all responsibilities in connection therewith
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