Product Data Sheet Show all documents

SikaFiber®-820 Stealth TW

MACRO SYNTHETIC FIBER

SikaFiber®-820 Stealth TW is 100% virgin copolymer twisted and crimped macro synthetic fiber designed to provide a uniform three-di­mensional reinforcement system for durable con­crete with an excellent finish. Specifically engineered and manufactured in a Sika ISO 9001 certified manufacturing facility.

  • Easy to batch small twisted bundles packaged in toss in degradable bags
  • Self-fibrillating to create a high fiber network in the concrete
  • Outstanding finishability and performance in hard troweled slab on ground applications
Product Data Sheet Show all documents

Usage

SikaFiber®-820 Stealth TW can be successfully used as a safe and simple alternative to wire mesh and rebar in various concrete applications, including but not limited to the following:    •    Residential, commercial and industrial slabs
•    Extending joints
•    Slabs on composite metal deck systems
•    Heavy-duty concrete pavements
•    Overlays
•    Bridge decks •    Slipform
•    Sidewalks
•    Mass concrete
•    Precast concrete

Advantages

SikaFiber®-820 Stealth TW is provided in small, twisted bundles, in easy to batch toss-in degradable bags. The engineered self-fibrillating macro fiber creates a high fiber network in the concrete matrix and is designed to create an outstanding finish and performance in a hard troweled slab-on-ground. Applicable, but not limited to, designs by ACI 332, ACI 360, and ACI 544.      SikaFiber®-820 Stealth TW also provides:   
  • Cost-effective, three-dimensional reinforce­ment that can replace or reduce wire mesh, rebar, and steel fiber,
  • Reduced embodied carbon by replacing conventional steel reinforcement with synthetic fiber reinforcement,
  • Increased safety on job site; remove lifting of reinforcement, bending, and tripping hazard,
  • Reduced construction time. No cutting, pla­cing, tying, and chairing of the steel is required,
  • Pumpable reinforcement with reduced wear on pumps and hoses compared to steel fibers,
  • Reduced permeability,
  • Increased ductility, flexural toughness and post first crack,
  • Increased durability due to high chemical resistance and corrosion free,
  • Reduced plastic shrinkage and settlement cracking,
  • Improved impact, shatter, and abrasion resistance.

Packaging

SikaFiber®-820 Stealth TW is available in 2.0 pound toss-in degradable bags. The bags are packed into cartons and palletized.

Color

Grey, twisted and crimped

Product Details

Sustainability / Certifications / Approvals

ENVIRONMENTAL INFORMATION

Lowers carbon footprint through the removal of rebar or wire mesh reinforcing which has a higher GWP.

  

For further information, please visit: https://usa.sika.com/en/sustainability.html

APPROVALS / STANDARDS

  • SikaFiber®-820 Stealth TW complies with ASTM C1116/C1116M Type Ill Fiber Reinforced Concrete and ASTM D7508/D7508M
  • UL/ULC certified and ap­proved for use in all 0700, 0800 and 0900 series decks as an alternate to welded wire fabric.
  • Complies to ANSI/SDI C-2017
Product Information

Chemical Base

Polyolefin

Fiber Type

Twisted, self-fibrillating, and crimped monofilament macro synthetic fiber

Shelf Life

5 years when stored per conditions below.

Storage Conditions

SikaFiber®-820 Stealth TW should be stored in original packaging in dry warehouse conditions between 40°F and 80°F (5-27°C). Pro­tect from rain and direct sunlight.

Density

0.91

Length

Twisted length 1.5" (38mm)

Melting Point

324°F (162°C)

Fiber Volume Content

Approximately 153,500 fibers per pound after mixing in concrete
Technical Information

Tensile Strength

600 MPa

Resistance to Alkalinity

High

Application

Application Information

Mixing

The guideline for the typical use of SikaFiber®-820 Stealth TW:

 

Step 1:

Adjust slump prior to addition of SikaFiber®-820 Stealth TW. The fibers will affect the apparent slump of the concrete mix. When starting with a slump of 5 to 8 inches the fibers may have the following effects:

  • 3 lbs/cu. yd. will produce approximately 1-1.5 inch of apparent slump loss.
  • 7 lbs/cu. yd. will produce approximately 3 inches of apparent slump loss.

Step 2:
  • Plant Mixer: Place bags as last item in the mix on aggregate belt or feed into truck.  Do NOT place the bags in the mixer all at one time, or on top of each other.
  • Truck Mixer: Add as the last item in the mix.

Step 3:

Add one unopened degradable bag at a time per drum revolution.  Do not cut or open the paper bags as they are water soluble.

Step 4:

Mix time with the fiber is 5 minutes at 14 RPM.
Consumption

Recommended Dosage

The dosage of the SikaFiber®-820 Stealth TW will vary according to the type of application and the performance requirements of the project. The standard recommended dosage rate of SikaFiber®-820 Stealth TW is between 3-7.5 lbs/cu. yd. (1.8-4.45 kg/m3) of concrete. Dosages outside the recommended dosage range can be used to meet project specific re­quirements. If this is the case, please contact your SikaFiber representative for technical support.

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