Product Data, W. R. MEADOWS
03 05 00
No. 351
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ACRY-LOK™

AN ACRYLIC POLYMER, BOND-ENHANCING, ADMIXTURE

DESCRIPTION
ACRY-LOK is a high solids, acrylic polymer latex bonding agent and admixture. This milky white liquid is non-yellowing in Portland cement mortars and concrete. When used as an admixture, ACRY-LOK provides increased abrasion and crack resistance, flexural strength, and freeze/thaw tolerance. Permeability is reduced, allowing more protection from chloride intrusion.

As a bonding agent, ACRY-LOK enhances the bond between existing concrete and placement of the fresh repair. It will not re-emulsify.

USES
Since ACRY-LOK will not re-emulsify, concrete repairs/mortars fortified with ACRY-LOK are ideal for interior, exterior and moisture-related applications. Typical areas that would benefit from properties of this product include toppings, mortars, grouts, vertical, horizontal and overhead patching. For enhanced bonding, use ACRY-LOK as an additive in bond coats. Only use ACRY-LOK neat for bonding repairs or very small bonding applications.

SPECIFICATIONS
Meets ASTM C 1059-91, Type II, (Non-Re-emulsifiable)

PACKAGING
1 gallon (3.79 Liters) Unit, (4) per Carton
5 gallon (18.93 Liters) Pails
55 gallon (208.20 Liters) Drums

SHELF LIFE
1 year in unopened container, stored at 50°F - 85°F (10°C - 29.4°C).

FEATURES AND BENEFITS

  • Significantly improves adhesion / Longer lasting repairs.
  • Increases flexural strength / Better durability.
  • Non-Re-emulsifiable / Superior performance in a wet environment.
  • Lowers permeability / Denser, more chemically resistant repairs.
  • Greater resistance to freeze-thaw / Better repair cycling performance.
  • Multi-purpose applications / Easy to use.
  • Increases abrasion resistance / Strong, permanent repairs.
  • Non-yellowing / Aesthetically appealing exterior repairs.

FOR INDUSTRIAL USE ONLY

APPLICATION
Surface Preparation...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 grease, oil, dirt or any other contaminants that can adversely affect the bond. Prepared surface must be dust-free and have sufficient profile to ensure adequate mechanical lock. Substrate must be saturated, surface dry (SSD) and free of standing water.

Mixing and Application Notes...Mix designs vary with specific job requirements. Proportioning of sand, cement and ACRY-LOK (Diluted or neat) ratios achieve different physical properties. The application instructions highlight typical conditions. (When in doubt, always apply a test patch).

AS AN ADMIXTURE...Typically, blend one part cement to three parts sand then add enough ACRY-LOK until a desired consistency is achieved. To avoid trapping air, do not over-mix. Place modified mortar/repair material and finish appropriately, careful not to overwork the material. Once the finishing process is completed, immediately cure work zone with undiluted ACRY-LOK or one of several water-base curing compounds from W. R. MEADOWS. Do not use solvent-base curing compounds.

AS A BOND COAT...Mix one-part cement to two parts sand, then add enough undiluted ACRY-LOK to make a slurry consistency. Work slurry into the repair area or concrete substrate with a stiff masonry brush, coating the entire area, paying special attention to the corners, sides and any exposed rebar. Place concrete or mortar material prior to ACRY-LOK bond coat becoming tack-free.

AS A BONDING AGENT (NEAT)...Apply ACRY-LOK undiluted by brush, roller or garden type sprayer on to prepared surface. Place concrete or mortar before applied ACRY-LOK surface dries. Use ACRY-LOK neat as a bonding agent only on very small applications. ACRY-LOK, used neat, does not conform to the structural bonding requirements of ASTM C 1059-91, Type II.

PRECAUTIONS

  • Designed for professional contractors, industrial use only.
  • Do not allow to freeze, properly dispose of any material that has been frozen.
  • Do not apply ACRY-LOK when temperature is expected to be below 40°F (4°C) within 48 hours or when rain is imminent.
  • Avoid over-mixing and over-working the surface.
  • ACRY-LOK may increase air content.
  • ACRY-LOK will alter mechanical properties.

SAFETY AND TOXICITY
Avoid direct contact with this product. Use of safety glasses, rubber gloves and protective clothing is recommended. If contact occurs, wash affected areas with mild soap and water. Keep product out of reach of children. Refer to Material Safety Data Sheet for complete health and safety information.

This material last updated October, 2005.

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