Description

Forton VF-774 is an all acrylic copolymer.

Forton VF-774 is an all acrylic, co-polymer dispersion liquid.

it is a 51% solid-liquid specifically formulated for the Glass fiber reinforced concrete (GFRC) production process.

VF-774 is UV stable.

It is further formulated to be stable and durable in the high pH Portland cement-based GFRC composite.

Features of the Forton VF-774:-
The Primary Benefits of Using Forton VF-774 are:-

• Elimination of the seven-day wet cure is required to achieve the maximum strengths of the GFRC composite.
• Significant improvements in the long-term durability of the GFRC composite, especially the maintenance of the long-term flexural strain to failure property, i.e. ductility of the composite.

Other Advantages to Using Forton VF-774:

• Improved workability of the mix at low water/cement ratios, further enhancing the strength of the cured cement matrix.
• Easy spraying of vertical surfaces without having the face mix sag.
• Complete dispersion of iron oxide pigments for batch-to-batch color consistency of face mixes.
• The UV stability of the Forton™ polymer means architectural finishes maintain them “as produced” colors.
• Hard cured face mixes for better sandblasting uniformity.
• Tighter, denser cured product, which reduces absolute moisture absorption and vapor permeability while at the same time significantly reducing the rate of absorption as a function of time.
• Elimination of crazing and spider cracking in the face mix due to the soft polymer particles in between the cement particle and the sand grain.

PCI Compliance:

Forton™ VF-774 complies with Appendix G of MNL 130, the Manual for Quality Control for Glass Fiber Reinforced Concrete Products from the PCI for the elimination of the seven-day wet cure.

Instructions:-

HANDLING & STORAGE –

Forton™ VF-774 is supplied in 5-gallon pails (40 lbs/18 kgs), 55-gallon drums (480 lbs/218 kgs) and totes (2,300 lbs/1,043 kgs). VF-774 should not be allowed to freeze.

Recommended storage temperature range:-

50°F – 100°F (10°C – 38°C). VF-774 should be stored in closed containers out of direct sunlight and away from direct sources of heat.

SHELF LIFE –

The shelf life of VF-774 is one year in unopened containers when properly stored. Smooth-On cannot guarantee the shelf life of opened or repackaged units.

Important: This product has a limited shelf life. Use as soon as possible after opening.

PRE-MIXING – VF-774 can separate over time in storage or transit as evidenced by caramel liquid on the surface. Gently stir with a paddle for 30 seconds. Pre-mixing one time per 24-hour usage cycle is recommended.

MEASURING & MIXING – Assemble all components and accessories before you begin.

Required Materials:

Portland Cement, Type I (White or Gray)
Silica Sand (washed, graded, dried. 0 Retention on 20 mesh sieve)
Forton™ VF-774
Water
Plasticizer (see recommendation based in Technical Bulletin)
AR Glass Fiber (see recommendation based in Technical Bulletin). Important: Do not use “E” Glass
Pigments – UV Stable, Iron Oxide (liquid or dry, if required)
Weighing Scales- with digital gram accuracy (do not use postal scale, dietary scale, etc.)
Mechanical / Power Mixer: 5 – 10 hp vertical high shear mixer or CS Unitec handheld MG120, MG140, or MG160 blades
NIOSH Approved Dust Mask to minimize dust inhalation while using components
Mixing Containers.

Important: Components should be mixed in proper sequence. Standard concrete mixers may be used, but it is recommended to use a high shear mixer specially designed for GFRC to ensure a thoroughly mixed, lump-free slurry is produced.

Step 1: Weigh or batch all materials.

Step 2: Add all liquids, including VF-774 and 2 oz. of plasticizer, to the mixer.

Step 3: Start mixer on slow (300-500 rpm).

Step 4: Add pigment if used.

Step 5: Add sand.

Step 6: Add cement and increase mixer speed to high (1,000-1,800 rpm).

Step 7: Mix for 1 – 2 minutes.

Step 8: Add the remaining plasticizer to achieve the desired workability.

Step 9: Reduce mixer speed to slow (300-500 rpm) and gradually add fiber (Premix only) until dispersed (typically not more than one minute). Important: Mixing too long or at too high a speed after the fiber has been added can filamentize or damage the fiber, resulting in placement issues and reduced strengths.

---