O'Brill Company
Construction Specialty Suppliers
6626 N. Milwaukee Ave.
Niles, IL 60714
773-775-1122 or 847-647-0005
FAX 847-647-7819
Since 1967
O'Brill CompanyConstruction Specialty Suppliers6626 N. Milwaukee Ave. Niles, IL 60714 773-775-1122 or 847-647-0005 FAX 847-647-7819 Since 1967
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 | Polymer Modified / Enhanced Bond
| Low Permeability / Protects Embedded Reinforcing Steel
| Shrinkage Compensated / Added Dynamic Stability
| Good Abrasion Resistance / Increased Wear Resistance
for Longevity
| Creamy Consistency / Easily Finished
| Excellent Freeze-Thaw Resistance / Long Term Stability
| Packaged as a Unit / Minimizes Job-Site Mixing
Variations
| Migrating Corrosion Inhibitor Enhanced / Protects
Localized and Adjacent Reinforcing Steel | |
TECHNICAL DATA
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).
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| All Technical Data is
typical information, but may vary due to testing methods, conditions and
procedures. ¹ Independent Reports Are Available Upon Request. ² Modified – No Bonding Agent used. Pre-dampening of properly prepared substrate. ³ RDM - Relative Dynamic Modulus |
YIELD
| 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 | |
SHELF LIFE
12 months when stored on pallets in a dry, cool area
FOR BEST PERFORMANCE
| MEADOW-CRETE H2 is recommended for concrete repairs
only.
| 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
repair area.
| Do not add any admixtures.
| Exceeding liquid requirements shall result in reduced
physical properties.
| 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
physical properties.
| 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. | |
SURFACE PREPARATION
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.
MIXING
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.
EXTENSION
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
MEADOW-CRETE H2.
PLACEMENT
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.
CURING
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
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