Product Data Sheet
|03 01 30.71|
MEADOW-CRETE® FNP EXTENDED
One-Component, Pre-Extended, Flowable, Form & Pour Structural Repair Mortar
MEADOW-CRETE FNP EXTENDED is a one-component, pre-extended, shrinkage-compensated repair mortar for structural repairs and reinstatement of concrete elements. The product can be formed and poured or formed and pumped, utilizing a suitable concrete pump. MEADOW-CRETE FNP EXTENDED contains 3/8″ nominal size aggregate and is suitable for applications requiring cathodic protection, impressed systems, or sacrificial anode applications.
MEADOW-CRETE FNP EXTENDED is ideal for reinstatement or repair of beams, columns, and balcony edges or for partial or full depth horizontal placement. The product is suitable for industrial, transportation, residential, and civil engineering applications.
PACKAGING AND YIELD
Seventy lb. (31.8 kg) bag yields 0.58 ft.³ (0.016 m³)
Yields listed above are based on seven pints (3.3 L) of water per bag and will vary based on substrate profile, aggregate, variations in mix water amounts and waste. Field trials should be performed to determine yields based on jobsite conditions.
SHELF LIFE (TYPICAL)
12 months when stored on pallets in a dry, cool area.
The following data was determined using the maximum water to powder ratio of 7 pints (3.3 L) per 70 lb. bag at 75ºF (23.5ºC).
|Set Time per ASTM C 191|
|Consistency||Minimum 5″ slump|
|Compressive Strength per ASTM C 109|
@ 1 day
@ 7 days
@ 28 days
|2000 psi (13.8 MPa)|
4000 psi (27.6 MPa)
5000 psi (34.5 MPa)
|Bond Strength per ASTM C 882|
@ 28 days
|1700 psi (11.7 MPa)|
|Length Change per ASTM C 157|
Drying Shrinkage @ 28 days
|0.034% (340 μ strain)|
|Flexural Strength per ASTM C 348|
|650 psi (4.48 MPa)|
|Aggregate Size||3/8″ nominal|
|Freeze-Thaw Resistance per ASTM C 666 (Procedure A)|
At 300 Cycles
|90% Relative Dynamic Modulus|
|All technical data is typical information, but may vary due to testing methods, conditions and operators.|
May help contribute to LEED credits:
|FOR BEST PERFORMANCE|
Perform surface preparation in accordance with ICRI Technical Guidelines #310.2-1997: Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymer Overlays. Mechanically roughen or high pressure water-jet the existing concrete substrate to a minimum concrete surface profile (CSP) of CSP-7 or higher, depending on substrate condition. Remove all unsound concrete and provide a profiled, porous surface. The substrate must be structurally sound, dust-free, and free of grease, oil, dirt, curing compounds, release agents, or any other surface or penetrated contaminants that will adversely affect bond. Sanding, grinding, or wire-brushing are not approved surface preparation methods. Saw cut perimeter of repair zone to a depth of 3/4″ (19 mm). Completely expose all reinforcing steel, ensuring a minimum clearance of 1″ (2.54 cm) behind reinforcing steel. Perform reinforcing steel preparation in accordance with ICRI Technical Guidelines #03730. Pre-soak repair zone for a minimum four hours prior to application of MEADOW-CRETE FNP EXTENDED. Substrate must be saturated, surface dry (SSD) and free of standing water.
Mixing … Mix only complete bags. Using a mortar- or concrete-type mixer designed for products containing a coarse aggregate, pour six pints (2.83 L) water per bag. Slowly add MEADOW-CRETE FNP EXTENDED while mixing. Adjust mix consistency using up to one pint (0.47 L) additional water. Mix for 3- 5 minutes or until homogenous and lump-free. Do not over mix. Do not retemper.
Forming…Support formwork as to ensure a tight seal with repair zone. Consult professional engineer regarding structural support and shoring requirements. Formwork should be rigid, structurally stable, sealed, and coated with a suitable release agent, such as DUOGARD® from W. R. MEADOWS. Forming should be accomplished in accordance with ACI 347-88. Proper vent and drainage ports should be installed as required to ensure no entrapment of air voids.
Placement … Pour or pump properly mixed product immediately following mixing to ensure adequate flow. Pumping should be accomplished in accordance with ACI 304-R-85. 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. In large applications [greater than 8″ (20.3 cm) in depth], follow pertinent ACI recommendations for concrete placement.
Curing … Cure in accordance with ACI 308. Cure MEADOW-CRETE FNP EXTENDED immediately following removal of forms prior to a seven-day cure time using a curing compound such as 1100-CLEAR or 2200-WHITE from W. R. MEADOWS. Curing compounds may discolor and may require complete removal prior to topcoating, painting, sealing, waterproofing, or similar application.
Contains Portland cement and crystalline silica (sand), which are suspected carcinogens. Skin and eye irritant. Dust may cause respiratory tract irritation. Follow OSHA safety regulations when handling. Avoid inhalation of dust. Avoid direct contact with this product. Utilize chemical resistant gloves and safety glasses to minimize direct contact. May cause serious delayed lung injury (silicosis). If contact occurs, wash affected areas with mild soap and water. For eye contact, flush with water for a minimum 15 minutes and contact a physician immediately. Keep product out of reach of children. For industrial use only. Not for consumption. Refer to Material Safety Data Sheet for complete health and safety information.
This material last updated August 2009.