Basalt Chopped Fiber / Microfiber

Basalt Chopped Fiber / Microfiber is a short fiber additive for thermoplastics & cement

Additive for thermoplastics, concrete, asphalt, and cement or gypsum-based mixtures
Reinforcing agent for plasters, grout, tile adhesives, screeds, and bases
Reduces cracking and minimizes chipping on product edges
Significantly enhances appearance and surface finish quality
Available with a variety of coatings; broad resin compatibility

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Applications Industry Advantages Specifications

Common Applications

Basalt Chapped Fiber / Microfiber is used primarily to reinforce concrete

Additive for a multitude of concrete products

Reinforcement for general and specialized construction concrete

Enhancement for concrete building foundations and footings

Precast panels, vaults, drainage structures, planters, benches, and curbs

Floor screed for underlayment or industrial and commercial flooring

Industry Challenges

Concrete doesn’t always hold up under the toughest conditions

Some additives absorb moisture, impacting strength and workability
Delamination can cause both structural and appearance problems
There’s a risk of explosive spalling in the event of a fire
Finished concrete can be susceptible to compression from impacts
Concrete surfaces can easily show abrasion over time

Material Advantages

Basalt Chopped Fiber / Microfiber provides extreme durability, naturally

Basalt does not absorb liquid, preserving concrete integrity
Slows delamination and increases flexural and axial tensile strength
Mitigates explosive spalling due to fire
Increases compression strength, impact resistance, and splitting resistance
Produces an all-natural, abrasion-resistant concrete surface

Business Benefits

Basalt can improve performance, project timelines, and costs

Reduces labor intensity compared to classic reinforcement approaches
Keep your process - no change in mixture preparation required
The cost of basalt microfiber / chopped fiber is much lower than metal mesh
More durable concrete lasts longer, providing lower lifetime costs
An all-natural product can contribute to sustainable project goals

Key Specifications

Most common fiber lengths: 4.5mm, 6mm and 10 to 30mm

Cut length, mm	(3, 6, 13, 15, 18, 25, 27, 50) ±1.5
Elementary fiber diameter, µm	(9, 13, 17) ±1.5
Humidity, %	<2.0
Content of substances removed during ignition, %	>0.3
Non-penetration of the batch weight, %	<5.0
Elastic modulus, kg/mm²	9100 - 11000
Thermal conductivity coefficient W / mK	0.013 - 0.038
Chemical stability, weight loss, %, after 3 hours of boiling. H2O / 2N NaOH / 2N HCL	2 / 6.0 / 2.2
Application temperature of fiberglass products, to C	from -250 to +850

Comparative Properties of Basalt Microfiber, Propylene Fiber, Glass Fiber and Steel Fiber

Index	Basalt Microfiber	Propylene Fiber	Glass Fiber	Steel Fiber
Material	Basalt Fiber	Polypropylene	Fiberglass S or E	Carbon steel wire
Tensile strength, MPa	3500	150 to 600	1500 to 3500	600 to 1500
Elastic modulus, hPa	Not less than 80	35	75	190
Elongation coefficient, %	2 to 4.5	20 to 150	4.5	3 to 4
Melting temperature, Co	1450	160	860	1550
Resistant to alkalis and corrosion	High	Questionable	Only S fiberglass is resistant	Low
Density, g/cm	2.6	0.91	-	-

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Trust the Testimonials

Stronger and Lighter, Naturally

"Composite materials like fiber-reinforced polymer (FRP) rebars offer higher tensile strength than Grade 60 steel at just a quarter of the weight—and unlike steel, they don’t corrode. This leads to longer service life for concrete structures. Among the various fibers used in FRP bars, basalt fiber stands out as a naturally sourced and sustainable alternative."

Alvaro Ruiz Emparanza

Ph.D., P.E.; Founder & CEO, Ecotori, LLC

Streamlined Our Process

"Using basalt rebar streamlined our tilt-up wall construction process, offering exceptional ease of use compared to steel rebar. Its lighter weight, easy handling, and resistance to corrosion have translated into substantial labor savings, allowing us to achieve efficiency without compromising on structural strength."

Brian Pratt

COO, McGarvey Development Company

Stronger And More Durable

"BFRP rebar is stronger and more durable than the minimum criteria set for GFRP bars and appears to be a viable alternative as a non-corrosive rebar option."

Steven Nolan

Office of Materials, Florida Department of Transportation

Faster, Stronger, and Longer Life

"The benefits of this bridge-building method are threefold. First, the arches are an instant framework. Second, you don’t need any steel reinforcing bars or rebar, because the arches are twice as strong as steel. And third, the tubes protect the concrete from water and elements, extending the life of the concrete."

Dr. Habib Dagher

Advanced Structures and Composites Center, U. of Maine

Same Building Method

"Whenever you introduce a new technology like this, contractors don’t always jump on it because there’s a fear that it’s going to be difficult to build. One of the beauties of [our composite bridge system] is that it’s built exactly the same way as you would build a steel girder or a concrete girder bridge."

Bill Davids

Chair of Civil and Environmental Department, University of Maine

Lighter Means Faster

"A lot of our time-saving activities once we got to the superstructure were absolutely governed by the weight of the girders themselves and the ability to do more things at once"

Brian Emmons

Project Manager, T Buck Construction

Expertise and Experience Drive Innovation

"It’s a combination of people who know how to build things, how to design things in the real world, plus our knowledge at the University in composite materials. Putting all that together really helped us develop the very unique secret sauce that I think will change how composites will be built in the future."

Dr. Habib Dagher

Advanced Structures and Composites Center, U. of Maine

Faster Than Expected and No Issues

"Even though we knew this would be erected really quickly out in the field, the speed surprised us. It didn’t take very long for them to get their tubes in place, to get all the decking in place and start the backfill process. When you walk into a brand-new product like this, there is a certain level of risk. But there were just no issues at all with the construction."

Mark Gaines

Washington State DOT Bridge & Structures Engineer

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