Micro Rebar™ reinforcement increases concrete’s strength and resilience and eliminates or reduces the traditional reinforcement (rebar and mesh) required by building codes.
Helix® is a short-twisted steel ‘micro bar’ used as a structural replacement for conventional steel reinforcing. Due to its unique shape and resulting behavior, Helix® can replace up to 100% of traditional steel reinforcing, while improving the shear strength and durability of concrete.
The image on the right shows the size of each Helix® micro rebar: just one inch long with a square cross section, the distance from one face to the other only .016” (.4mm). But there’s a big difference between Helix® and other fibers: Helix® is TWISTED, with five full twists along the 1” length.
To determine the correct dosage:
The secret of Helix® is the TWISTED square profile. Similar to a corkscrew in a wine bottle stopper, the only way Helix® can be removed from the concrete is for it to be twisted out. The energy required to untwist Helix® matches very closely to the energy required to pull deformed rebar through concrete.
This sets Helix® apart from other fibers which rely solely on friction to resist pull-out. And it is this ‘twisting’ behavior which allows Helix® to replace conventional steel reinforcement in a wide range of applications.
A ‘medium’ dosage of Helix® is about 15 pounds per cubic yard which means 170,000 micro bars dispersed throughout the concrete. That’s a lot of ‘untwisting’ tensile strength which typically provides equivalent bending moment capacity, higher shear strength and better durability than conventional reinforcing.
Proven in the Field
From slabs, walls and footings to foundations and infrastructure projects, over the past two decades, Helix Micro Rebar™ has been used in thousands of projects and applications, and been shown to improve resiliency, ductility, and strength of concrete structures.
Helix® Micro Rebar™ reinforcement increases concrete’s strength and resilience and eliminates or reduces the traditional reinforcement (rebar and mesh) required by building codes.
Helix® Micro Rebar™ concrete reinforcement is added at the ready-mix plant or on site directly to the concrete mix, reducing costs and valuable time. Clients say they save one day of construction for every 10,000 square feet of rebar they replace with Helix® Micro Rebar™ reinforcement.
Our technology spans a wide range of market segments, including Commercial, Industrial, Residential, Precast, Infrastructure and ICF.
Use our Project Finder to learn more about the wide range of projects that have been reinforced with Helix® Micro Rebar™.
As Helix® eliminates the labor to install conventional steel reinforcement, the forming contractor saves up to 30%.
As Helix® eliminates the labor to install conventional steel reinforcement, construction time is reduced dramatically.
With Helix® the reinforcement is ‘poured’ into the concrete, thereby eliminating problems associated with placement errors.
Rebar is very heavy and difficult to carry, resulting in multiple back injuries. Ends of the cut steel are razor sharp and can lead to injuries. Impalement of body parts can also occur with rebar. Helix® eliminates all of these injuries as the reinforcing is poured’ with the concrete rather than placed by hand in advance.
Using Helix® increases the sustainability of a structure. Helix® is manufactured from up to 50% recycled steel, lowers the embodied energy of the reinforcement and can contribute LEED® points.
Helix® is electroplated with zinc and therefore resists rust three times longer than conventional uncoated steel reinforcement.
Helix® has a very short development length and therefore starts working at the micro-crack level, well before a dominant crack occurs. As the loads are redistributed by micro-cracks, this prevents the formation of a single dominant crack in the concrete..
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