MEADOW-PATCH T2

1 CSI Code: 03 01 NO. 386 AUGUST 2009. (Supersedes April 2004). MEADOW-PATCH T2. Concrete Resurfacer & Repair Mortar DESCRIPTION Compressive Strength per ASTM C 109. MEADOW-PATCH T2 is a two-component, @ 1 day: 2,000 psi ( MPa). polymer - modified , cementitious concrete @ 28 days: 5,000 psi ( MPa). resurfacer and repair mortar. *All technical data is typical information, but may vary due to testing methods, conditions, USES and/or operators. MEADOW-PATCH T2 is designed to resurface concrete from 1/16 to 1/2 in depth. COLOR. Light gray in color. MEADOW-PATCH T2 is also a premium-grade repair mortar capable of patching concrete from PACKAGING. featheredge to 2 in depth on horizontal 50 lb. ( kg) poly-lined bag applications. It may also be used for vertical and 50 lb. ( kg) pail with 1gal. ACRY-LOK kit overhead surface repairs. YIELD AND COVERAGE. MEADOW-PATCH T2 is easy to use, versatile, Yield per 50 lb. ( kg) bag is ft.

2 And produces repaired surfaces suitable for ( ). rubber-wheeled traffic. Depth (Inches) Unit1. For overhead or vertical use, MEADOW-PATCH 1/16 100. T2 is an ideal choice for smoothing rough 1/8 50. surfaces, repairing honeycombs, and dressing up 25. bug holes. When mixed, the product's creamy consistency provides an excellent skim coating for swimming pools, concrete walls, balconies, Note1: Single-Coat Application (two-coat etc. application typically required as a concrete resurfacer). For example, a two-coat system at Because of its excellent bond strength, 1/8 would yield 25 per bag (50 coats breathability, and freeze-thaw resistance, = 25 ). MEADOW-PATCH T2 may be used in interior and/or exterior applications; below-, above- or on-grade. SHELF LIFE (TYPICAL). When stored on pallets in a dry, cool area, shelf life is 12 months. TECHNICAL DATA*. The following physical properties were determined using the mix ratio of quarts ( L) of ACRY-LOK per 50 lb.

3 ( kg) at 75 F. ( C). Set Times per ASTM C 191. Initial: 4 hours Final: 6 hours CONTINUED ON REVERSE SIDE . W. R. MEADOWS, INC. HAMPSHIRE, IL / CARTERSVILLE, GA / YORK, PA. Box 338 HAMPSHIRE, IL 60140-0338. Phone: 847/214-2100 Fax: 847/683-4544 FORT WORTH, TX / BENICIA, CA / POMONA, CA. 1-800-342-5976 GOODYEAR, AZ / MILTON, ON / ST. ALBERT, AB. PAGE 2 MEADOW-PATCH T2 #386 AUGUST 2009. LEED INFORMATION APPLICATION. May help contribute to LEED credits: NOTE: The following information is for MR Credit : Regional Materials: 10% Extracted, MEADOW-PATCH T2 as a concrete Processed & Manufactured Regionally resurfacer. MR Credit : Regional Materials: 20% Extracted, Processed & Manufactured Regionally Surface Preparation Prepare concrete substrate in accordance with International FEATURES/BENEFITS Concrete Repair Institute (ICRI) Technical Repairs and resurfaces. Guideline # : Specifying Concrete Color-enhanced for a light gray finish.

4 Surface Preparation for Sealers, Coatings, and polymer - modified Enhanced bond. polymer Overlays. Specifically engineered for high abrasion resistance. Suitable for pedestrian, soft rubber tires, and forklifts. Mechanically roughen or high pressure water-jet Will accept various coatings. existing concrete substrate to a minimum concrete May be dyed, stained, or pigmented. surface profile (CSP) of CSP-4 or higher, May be stenciled. depending on substrate condition. Remove all May be spray-applied. unsound concrete and provide a profiled, porous May be form and poured or pumped. surface. Substrate must be structurally sound, May be mechanically sanded. dust-free, and free of grease, oil, dirt, curing High impact strength. compounds, release agents, or any other surface Will aid in waterproofing. or penetrated contaminants that will adversely Breathable Will not act as a vapor barrier. affect bond. Sanding or wire-abrading are not Excellent freeze-thaw characteristics Long-term approved surface preparation methods.

5 Exterior stability. Substrate must be saturated surface dry (SSD) and FOR BEST PERFORMANCE free of standing water. MEADOW-PATCH T2 is recommended as a concrete resurfacer and/or topping from 1/16 to 1/2 in depth. Mix Ratios: ACRY-LOK to meadow - Not intended to be used as a self-leveling underlayment. patch T2. Do not apply below 45 F ( C) or above 90 F ( Base-coat: 1 gal. ( L) per 50 lb. ( kg) bag. C) or when rain is imminent. Topcoat: gal. ( L) per 50 lb. ( kg). Do not bridge moving cracks. Extend existing control bag. and expansion joints through MEADOW-PATCH T2. Apply DECRA-SEAL W/B for added protection. Procedures Using a mortar-type mixer, pour Do not add any admixtures. of the required ACRY-LOK polymer from the Avoid steel-wheeled traffic in thin applications. Thin stated mix ratios above (depending on applications subject to high point loading should also be application) into a clean mixing container. Slowly avoided.

6 Add powder and mix to a desired consistency Exceeding liquid requirements shall result in reduced using the remaining liquid polymer as physical properties. recommended for the application type. Always Realize that set time will decrease as the product, air, add standard concrete liquid or powder inorganic substrate, and mixing liquid temperature increases and pigment prior to fully adding the remaining will be increased as the temperature decreases. ACRY-LOK adjustment. Protect from conditions that may cause early water loss: high winds, low humidity, high temperature, and direct Mix for three minutes or until lump-free sunlight. Early water loss is amplified in thin consistency is obtained. Do not over-mix. For applications. small repairs, mix in a clean vessel [5 gal ( Realize that the use of extender aggregate will alter L)] using a variable-speed drill with a paddle physical properties. mixer at 400-600 rpm.

7 Mix only complete bags. Failure to follow industry standard practices, such as Do not mix more material than can be placed and ACI or ICRI, will result in decreased material finished in 30 minutes at 77 F (25 C). 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 jobsite. PAGE 3 MEADOW-PATCH T2 #386 AUGUST 2009. CRACK DETAIL APPLICATION. Detail existing cracks, either by injecting or NOTE: The following information is for gravity feeding a low viscosity epoxy such as MEADOW-PATCH T2 as a repair mortar. REZI-WELD LV STATE or REZI-WELD 1000. STATE, conforming to ASTM C 881, Type IV, Surface Preparation Prepare concrete Grade 1 or 2, Class B or C. Active cracks may substrate in accordance with ICRI Technical telegraph through MEADOW-PATCH T2.

8 Guideline # : Specifying Concrete Surface Preparation for Sealers, Coatings, and JOINTING polymer Overlays. Do not apply MEADOW-PATCH T2 over expansion or active joints. Tape or protect Mechanically roughen or high pressure water-jet existing joint from intrusion of product. The existing concrete substrate to a minimum concrete application of MEADOW-PATCH T2 may be surface profile of CSP-4 or higher, depending on placed over control joints and tooled prior to final substrate condition. Remove all unsound set (usually 20 minutes after application) using an concrete and provide a profiled, porous surface. edging tool to give a frame design. Substrate must be structurally sound, dust-free, and free of grease, oil, dirt, curing compounds, PLACEMENT release agents, or any other surface or penetrated Apply a base-coat of the properly mixed and contaminants that will adversely affect bond. prepared substrate either by Magic Trowel, Sanding or wire-abrading are not approved TexMaster Tools ( ), steel surface preparation methods.

9 Trowel, wood float, or hopper sprayer onto the surface, filling in low or deteriorated areas. The Substrate must be SSD and free of standing water. purpose of the base-coat is to fill in any defects while leaving the material even with the high Prime SSD substrate with slurry coat (two parts spots. Allow base-coat to dry 2-6 hours, powder to one part ACRY-LOK). Allow slurry depending on temperate and sun. Remove any coat to become tacky prior to application of high spots or rough areas using a rubbing stone. MEADOW-PATCH T2. Do not allow slurry coat to become tack-free. If slurry coat becomes tack- free prior to application of the bulk mix, reapply Slightly pre-dampen the base coat, especially on slurry coat after primed substrate has been hot or sunny days, to cool the surface to allow for properly saturated to SSD condition. easier application and longer open time. Apply the topcoat by Magic Trowel or hopper sprayer to Mix Ratios: ACRY-LOK to meadow - a uniform smooth or desired surface.

10 A broom patch T2. finish may be applied immediately following - 1 gal. ( - L) per 50 lb. ( kg). application, typically within 10 minutes bag. maximum. For additional application techniques or Procedures Same as procedures on previous decorative enhancements, such as stenciling, page. please contact a W. R. MEADOWS. representative at (800) 342-5976. EXTENSION. As a Repair Mortar Applications greater than CURING 1'' ( mm) must be extended with lb. Protect from early water loss under extreme ( kg) of 1/4'' washed, dry pea gravel. conditions, such as hot weather, direct sun, or Applications greater than 2'' ( mm) must be strong winds. Cure final coat with DECRA- extended with 25 lb. ( kg) of 3/8'' washed, SEAL W/B for protection from early water loss. dry pea gravel. Maximum application depth is 4 . Do not use solvent-based curing compounds or ( mm). sealers. PAGE 4 MEADOW-PATCH T2 #386 AUGUST 2009. CRACK DETAIL SAFETY AND TOXICITY.