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FX-821 MMA Liquid Polymer Resin for Injection

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FX-821 A & Initiator

FX-821 MMA was used in the following case studies:

Baltimore Washington International Airport Application of FX-821

DESCRIPTION:

FX-821 Liquid MMA Polymer Resin for Injection or as a penetrating sealer, is a two component MMA resin of extremely low viscosity that will penetrate into concrete cracks as fine as 0.003 inches. The resin polymerizes in place and seals and strengthens existing porous concrete. Winter and summer formulations are available depending on ambient conditions.

ADVANTAGES:

Extremely low viscosity
Potlife can be adjusted to control gel time
Has been used with patented vacuum injection process
Bond strength to concrete exceeds concrete tensile strength
Winter formula can be used on dry surfaces at temperatures as low as -20°F

PHYSICAL PROPERTIES:

Color	Amber
Viscosity	10 cps
Gel Time	40 minutes summer mix 10 minutes winter mix
Cure Time	24 hours @50°F (10°C)
Adhesion to Concrete	2,000 psi	13.79 Mpa
Compressive Strength, 7 days	12,000 psi	96.53 Mpa
Tensile Strength, 7 days	5,000 psi	34.47 Mpa
Flex. Strength	12,000 psi	82.74 Mpa
Linear Shrinkage	1%

SURFACE PREPARATION:

Concrete cracks to receive FX-821 (MMA) must be clean, dry and sound. The drier the concrete, the deeper the penetration into fine cracks. Clean cracks using vacuum or compressed air to remove debris from cracks. Compressors must employ inline traps or filters to prevent water or oil from contaminating crack.

MIXING:

One bottle of B Component is mixed with 1 gallon A Component. Open Component A and put Component B (initiator) paste into Component A container (one 100 gram bottle of B for each 1 gallon of A, or five 100 gram bottles of B for each five gallon unit of A). Mix for 2-3 minutes with a low speed drill and FX-Mixing Paddle. Apply immediately after mixing.

APPLICATION:

To seal flat surfaces, pour out mixed material and spread evenly with squeegee, roller, or brush. Do not leave puddles. To seal cracks, use vacuum or pressure injection machines, Simple caulking guns may be used for low pressure through handguns.

For patching of wide cracks, Cabosil or similar thickening agents may be added up to 5% by weight of FX-821 MMA. For pothole patching, dry pack with a mixture of coarse and fine aggregates. Pour the mixed FX-821 to saturate the dry packed surfaces.

COVERAGE:

Coverage depends on porosity of concrete or masonry surface. 150 to 200 square feet is the normal range.

LIMITATIONS:

Do not leave puddles which can cause slippery surface. To prevent slippery surfaces, broadcast dry silica sand for FX-701 Filler. Do not apply to a damp or wet surface. Do not use below -20°F.

SHELF LIFE:

1 year. Product must be stored below 80°F to prevent polymerization of liquid and loss of activity of initiator.

PACKAGING:

1 gallon (3.8 L), 5 gallon (18.9 L) units or 54 gallon (204.4 L) drums.

CAUTION:

DANGER! FLAMMABLE! A Component contains Methyl Methacrylate. B Component contains Benzoyl Peroxide. Use only with good ventilation. Avoid inhalation of vapor. Prevent all contact with eyes, skin and clothing. Wash thoroughly after handling. Keep containers closed when not in use.

FIRST AID IN CASE OF CONTACT:

If contact with skin occurs, wash immediately with soap and water, and contact a physician. If contact with eyes, immediately flush with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician. Wash clothing before reuse and discard contaminated shoes.

WEAR PROTECTIVE CLOTHING, GOGGLES, GLOVES AND/OR BARRIER CREAMS.

FOR INDUSTRIAL USE ONLY. KEEP AWAY FROM CHILDREN. 12/2007