TWO-COMPONENT, POLYMER MODIFIED, HORIZONTAL REPAIR
SEALTIGHT MEADOW-CRETE H2 is a two-component,
trowel applied, corrosion inhibitor enhanced, polymer modified,
shrinkage-compensated, cementitious repair mortar for horizontal applications.
SEALTIGHT MEADOW-CRETE H2 is designed for horizontal repairs and
resurfacing of concrete, both small and large areas, interior and exterior
applications, a minimum of 1/4" deep. MEADOW-CRETE H2 is suitable for
industrial and civil engineering applications.
Features / Benefits
|Polymer Modified / Enhanced Bond
|Low Permeability / Protects Embedded Reinforcing Steel
|Shrinkage Compensated / Added Dynamic Stability
|Good Abrasion Resistance / Increased Wear Resistance
|Creamy Consistency / Easily Finished
|Excellent Freeze-Thaw Resistance / Long Term Stability
|Packaged as a Unit / Minimizes Job-Site Mixing
|Migrating Corrosion Inhibitor Enhanced / Protects
Localized and Adjacent Reinforcing Steel|
The following physical properties were determined
using the maximum liquid (SEALTIGHT ACRY-LOK) to powder ratio of 1-gallon
(3.78L) per 50 lb. bag at 75ºF (23.5ºC).
|Set Time Per ASTM C 191
|Working Time 30 mins.
|Flow Per ASTM C 191¹
Per ASTM C 109¹
|at 1 day
||3,500 PSI (24MPa)
|at 7 days
||6,700 PSI (46 MPa)
|at 28 days
||7,750 PSI (53.5 MPa)
|Bond Strength Per ASTM C 882¹²
|@ 1 day
||725 psi (5 MPa)
|@ 28 days
||1850 psi (13 MPa)
|Modulus of Elasticity
Per ASTM C 469¹
|2.18 x 106
psi (15.0 GPa)
|Length Change Per ASTM C 157¹
|Drying Shrinkage @28
||-0.077% (770 µ strain)
|Length Change Per ASTM C 157¹
|Specimens stored at
73+/-3 F & 50+/- 4% RH, continuously
|Drying Shrinkage @28
||-0.1230% (1230 µ strain)
|Flexural Strength Per ASTM
|@ 1 day
||600 psi (4 Mpa)
|@ 28 days
||1,600 psi (11 Mpa)
|Freeze-Thaw Resistance Per
ASTM C 666 (Procedure A)¹
|At 300 Cycles
|All Technical Data is
typical information, but may vary due to testing methods, conditions and
Independent Reports Are Available Upon Request.
² Modified – No Bonding Agent used. Pre-dampening of properly
³ RDM - Relative Dynamic Modulus
|55lb. (25 kg) bag yields: 0.48 Cu. Ft.
|Extended with 12.5 lbs. (5.68 kg) of aggregate yields
0.56 Cu. Ft.
|Extended with 25 lbs. (11.36 kg) of aggregate yields
0.64 Cu. Ft|
12 months when stored on pallets in a dry, cool area
FOR BEST PERFORMANCE
|MEADOW-CRETE H2 is recommended for concrete repairs
|Do not use as an underlayment or overlay.
|Do not apply below 40°F (4°C) or above 90°F (32°C)
or when rain is imminent.
|Protect from freezing for a minimum of 24 hours.
|Do not bridge moving cracks. Extend existing control
and expansion joints through MEADOW-CRETE H2.
|For large areas with no control, expansion or
construction joints, refer to ACI guidelines.
|Do not exceed a length-to-width ratio of 2 to 1 for the
|Do not add any admixtures.
|Exceeding liquid requirements shall result in reduced
|Realize that set time will decrease as the product,
air, substrate and mixing liquid temperature increases and will be increased
as the temperature decreases.
|Repair areas should be saw cut and slightly undercut to
a minimum depth of a 1/4" (6 mm). Do not featheredge.
|Protect from conditions that may cause early water
loss; windy, low humidity, high temperature and direct sunlight. Early water
loss is exasperated in thin applications.
|Realize that the use of extender aggregate will alter
|Failure to follow industry standard practices may
result in decreased material performance.
|Proper application is the responsibility of the user.
Field visits by W.R. MEADOWS personnel are for the purpose of making
technical recommendations only, and are not to supervise or provide quality
control on the job-site.|
Perform surface preparation in accordance with ICRI Technical Guidelines No.
03730. Mechanically abrade existing substrate to remove all unsound concrete,
but do not use excessive force, which may cause micro-fracturing. Substrate must
be structurally sound and free of any contaminants that will adversely affect
bond. Prepared surface must be dust-free and have sufficient profile to ensure
adequate mechanical lock. Saw cut perimeter of repair zone to a depth of
1/4" to avoid featheredging.
Completely expose all reinforcing steel, ensuring a
minimum clearance of 3/4" behind reinforcing steel. Perform reinforcing
steel preparation in accordance with ICRI Technical Guidelines No. 03730.
Pre-soak repair zone, prior to application of slurry coat
to a saturated, surface dry (SSD) condition and free of standing water. Prime (SSD)
substrate with a slurry coat (2 parts MEADOW-CRETE H2 powder to 1 part SEALTIGHT
ACRY-LOK). Allow slurry coat to become tacky prior to application of
MEADOW-CRETE H2. Do not allow slurry coat to become tack-free.
Mix only complete bags. Using a mortar-type mixer, pour 3/4 of the 1-gallon
container of ACRY-LOK into the mixer. Slowly add MEADOW-CRETE H2 while mixing.
Mix for 3-5 minutes or until homogeneous and lump-free. Adjust mix consistency
using the remaining 1/4 of container of ACRY-LOK. If extending, follow
additional instructions below. For small repairs, mix in a clean vessel, using a
variable-speed drill with a mixing paddle designed for mixing mortars (not
liquids) at 400-600 rpm. Do not over-mix.
Applications greater than 2" must be extended with 12.5 lbs. (5.68 kg) of
3/8" washed, dried pea gravel. Applications greater than 4" must be
extended with 25 lbs. (11.36 kg) of 3/8" washed, dried pea gravel. The
extender aggregate must be added to the mixer prior to the addition of
Compact MEADOW-CRETE H2 into properly prepared SSD substrate prior to bulk
placement. Finish surface with a wood or steel trowel or sponge float.
MEADOW-CRETE H2 may be applied horizontally up to 4" and beyond, depending
on percent of extension used. Do not re-temper or over-work product. Follow ACI
305-R89 "Standard on Hot Weather Concreting" or ACI 306-R88
"Standard on Cold Weather Concreting" when applicable.
Cure in accordance with ACI 308. Cure MEADOW-CRETE H2 immediately following
application using a suitable water-based curing compound such as SEALTIGHT
2250-WHITE or SEALTIGHT 1130-CLEAR. (Do not use solvent-based curing compounds).
W.R. MEADOWS recommends the use of SEALTIGHT EVAPRE, an evaporation retarder,
when conditions exist for rapid early water loss.
SAFETY AND TOXICITY
Avoid inhalation of dust. Avoid direct contact with this product. Utilize gloves
and safety glasses to minimize direct contact. If contact occurs, wash affected
areas with mild soap and water. Keep product out of reach of children. Refer to
Product Material Safety Data Sheet for complete Health and Safety Information.
This material last updated November 2001
W. R. MEADOWS, INC. warrants that, at the time and place
we make shipment, our materials will be of good quality and will conform with
our published specifications in force on the date of acceptance of the order.
THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY,
EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY
OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the
exclusive remedy for breach of this Warranty, we will replace defective
materials, provided, however, that the buyer examine the materials when received
and promptly notify us in writing of any defect before the materials are used or
incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has
shipped the materials, all our Warranty and other duties with respect to the
quality of the materials delivered shall conclusively be presumed to have been
satisfied, all liability therefore terminates, and no action for breach of any
such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event
be liable for consequential damages. Unless otherwise agreed to in writing, no
warranty is made with respect to materials not manufactured by W. R. MEADOWS,
INC. We cannot warranty or in any way guarantee any particular method of use or
application of the performance of materials under any particular condition.
Neither this Warranty nor our liability may be extended or amended by our
salesmen, distributors or representatives, or by our distributor's
representatives, or by any sales information or drawings.