Basalt Fibre Rebar, Chopped Fibre and Meshes for Concrete Reinforcing

Domeshells is a supplier of basalt fibre reinforcing products

Small quantities are available from the Domeshells shop. For project quantities please contact us.

Basalt Rebar

Available in diameters of 4mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm

Available in 100m & 500m coils for 4mm, 6mm, and 8mm diamters

All other sizes available in cut lengths. Please contact us for pricing and shipping.

Basalt fibre reinforcing bar is highly desirable in corrosive environments as it does not rust or corrode. It is one quarter of the weight of steel and that makes it much easier and faster to work with.

Can be cut with an angle grinder or bolt cutters.

Large orders require 3 months lead time

Basalt Chopped Fibre

The chopped fibre is added to concrete and render mixes to add toughness to the concrete and mitigate micro cracking.

Available in length from 4mm up to 50mm

Visit our shop to purchase 7mm fibres in 20kg bags

For larger quantities or different fibre length – Please contact us directly.

Basalt Mesh

Available in various mesh sizes and weights.

5mm square mesh 115gsm – in 100m x 1.0m rolls

10mm square mesh 115gsm – in 100 x 1.0m rolls

25mm square mesh

Visit our shop for 5mm, 10mm and 25mm mesh in 100m x 1m rolls (100m2)

For other mesh sizes and weights please contact us directly

Comparison of Properties – Basalt Fibre v Other Fibres

Material Density Tensile strength  Specific strength  Elastic modulus  Specific modulus
  (g/cm³) (GPa)   (GPa)  
Steel re-bar 7.85 0.5 0.0667 210 26.7
A-glass 2.46 2.1 1.35 69 28
C-glass 2.46 2.5 1.35 69 28
E-glass 2.6 2.5 1.33 76 29.2
S-2 glass 2.49 4.83 1.94 97 39
Silicon 2.16 0.206–0.412 0.0954–0.191    
Quartz 2.2 0.3438 0.156    
Carbon fiber(large) 1.74 3.62 2.08 228 131
Carbon fiber(medium) 1.8 5.1 2.83 241 134
Carbon fiber(small) 1.8 6.21 3.45 297 165
Kevlar K-29 1.44 3.62 2.51 41.4 28.8
Kevlar K-149 1.47 3.48 2.37    
Polypropylene 0.91 0.27-0.65 0.297–0.714 38 41.7
Polyacrylonitrile 1.18 0.50-0.91 0.424–0.771 75 63.6
Basalt fiber 2.65 2.9–3.1 1.57–1.81 85–87 32–33

Why use basalt concrete reinforcing materials

  • handling characteristic is easier than steel
  • quarter the weight of steel
  • speeds construction time
  • twice the tensile strength of steel (use one bar size smaller than steel)
  • does not rust or corrode (suitable for marine and corrosive environments)
  • easy to cut (with bolt cutters of a cut-off wheel)
  • does not conduct electricity
  • same thermal coefficient as concrete
  • it’s a sustainable cost-effective long term solution

What is Basalt Fibre

Basalt fibre is made from a single material, crushed basalt. Basalt of high acidity (over 46% silica content) and low iron content is considered desirable for fibre production. Unlike with other composites, such as glass fibre, no other materials are added during its production. The basalt is simply washed and then melted.

The technology of production of BCF (Basalt Continuous Fibre) is a one-stage process: melting, of basalt and extraction of fibres. Basalt is heated only once. Additional processing of BCF into various materials is carried out using “cold technologies” with low energy costs.

The manufacture of basalt fibre requires the melting of the crushed and washed basalt rock at about 1,500 °C . The molten rock is then extruded through small nozzles to produce continuous filaments of basalt fibre.

They also have a high elastic modulus, resulting in high specific strength—three times that of steel. Thin fibre is usually used for textile applications mainly for the production of woven fabric. Thicker fibre is used in filament winding, for example, for production of CNG cylinders or pipes. The thickest fibre is used for pultrusion, geogrid, unidirectional fabric, multi-axial fabric production and in form of chopped strand for concrete reinforcement.

One of the fastest growing applications for continuous basalt fibre at the moment is the production of basalt rebar that is a substitute for traditional steel rebar for concrete reinforcement.

Basalt Fibre Safety

The basalt fibres typically have a filament diameter of between 10 and 20 µm which is far enough above the respiratory limit of 5 µm to make basalt fibre a suitable replacement for asbestos.

To make an inquiry or talk to us about your needs – call us here: 02 6677 0216

or Send us a message here

Basalt Concrete Reinforcing Engineering, Technical and Scholarly Articles

Below are just some links in reference to the mechanical properties of basalt

Publications Link
Science Direct technical Publications –
Basalt-based fiber-reinforced materials and structural applications in civil engineering
Mechanical properties tests and multiscale numerical simulations for basalt fiber reinforced concrete
Effect of basalt fibers on the flexural behavior of concrete beams reinforced with BFRP bars
Cracking resistance and mechanical properties of basalt fibers reinforced cement-stabilized macadam