Basalt Technology (Pty) Ltd.

The home of StoneRod® fibre products

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Direct Roving

Direct roving is a single strand fibre that is wound on a bobbin. Different diameters can be obtained ranging from 6 µm to 30 µm (micron). Direct roving fibre has excellent mechanical characteristics, with good tensile strength. The material has high-temperature and corrosive chemical resistance, and is less expensive than carbon or special glass fibre products. Direct roving can be used in woven fabrics, pultrusion products, CNG cylinder wrapping, geotextile products, prepregs, veil type materials and chopped fibre configurations.

Bundled Roving

Bundled roving is produced from multi-strands of continuous fibres. The bundle of continuous mono-directional fibres are produced in a ribbon form, without twisting. The ribbons of fibre can be used for making mesh fabrics, rebar, and as a base for high-temperature needled filtration felts, filament-winding of tanks, pipes, and cylinders, or bundled chopped fibre. Other applications include: Raw material for fabrics and tapes, as well as base material for electronic circuit boards. It can also be used as an effective tyre cord.

Twisted yarn

Twisted yarn is made up of a multiplicity of individual fibres being bundled together, and then twisted. The yarns are used to weave, knit materials, or produce sleeves. These base materials are used for needle punched mats. Twisted yarns can also be bundled together to make basalt ropes. The ropes can be used for reinforcing monolithic Ecoshell dome houses. The fibre rope is wound around the form that has been coated with a layer of shotcrete. The material is electrically inert and can provide resistance to electrical fields.

Textured yarn

Made from basalt roving, which is passed through a process to fluff the fibre material. It is excellent for use in thermal insulation. It is used to produce heat insulating braided tapes, tubular weaves, motor vehicle silencer fillers, where this fibre provides above-average heat, and sound absorption performance. Tubular weaves, when threaded over electrical high-tension cables, can prevent fire from cable shorting in electrical sub-stations.

Single filament chopped fibre

Single filament chopped fibre is produced from single filament roving. The fibre material consists of fine, individual fibres. The product is recommended for use in producing non-woven mats; chopped strands mat, veils, brake pads, brake linings, and clutch plate facings. The material can be used in the control of concrete plastic-shrinkage cracking, and as reinforcement, in asphalt mixes for pavements. It is not recommended as a shotcrete fibre.

Bundled Chopped Fibre

Bundled Chopped Fibre is produced from bundled, or assembled roving. The individual fibres are in narrow bundles of aligned fibres. The bundled fibre is generally easier to handle that the single filament fibres. Normally, they disperse in the mixer, where the shearing action of the mixing separates the fibres. Bundled fibre is used in shotcrete mixes, as well as in concrete reinforcement, and asphalt reinforcement for roads and parking areas.

StoneRod fibre mat

StoneRod fibre mat is able to withstand temperatures up to 750 - 800°C. The mat/felt is manufactured in various thicknesses to suit numerous application types. It can be used to protect structural steel from fire and heat degradation. Uses also include insulation of domestic and industrial furnaces, heat shields, turbines wraps, fire protection, or containment, where flammable material is used. The material is suitable for use in internal combustion exhaust systems, and silencers, where it provides high levels of sound absorption, for improved noise abatement.

Needle punched mat/felt

StoneRod mat/felt has very low thermal conductivity. The flexible material has exceptional performance at high-temperatures. It can withstand continuous temperatures from -200°C to +700°C. It conforms to irregular surfaces and shapes, making the product highly versatile, with an excellent ability to drape. Its superior chemical and environmental properties make it highly durable and safe to use. The mat can be used in sound insulation, heat preservation, fireproofing, and filtration.

StoneRod twill fabric

Basalt twill fabric is used in fibre reinforced structural composites. Basalt fabrics can be used as base material for reinforcing composite fibre products. Basalt twill fabrics are used as a base for the production of insulation materials. Twill materials can be used in the production of printed circuit boards, for electronics, and in electrical engineering. It can be used as a fireproof material in the aerospace and automotive industries.

Stonerod fibre veil

Fibre veil materials can be used to protect fibre reinforced pultrusion products from damage. The surfacing veil can be used during filament winding, or as a surfacing tissue for composite parts. The fibres are highly corrosion resistant, provide excellent conformability and wet out. The material can be used as a lay-up material which improves fibre reinforced plastic and compression moulding processes, providing improved surface finishes. It can replace glass-fibre veil in fibre-reinforced-plastics (FRP), giving enhanced strength to the composites.

Chopped strand mat

Chopped strand mats consist of chopped fibres bonded together using either an emulsion binder, or a polyester powder. The mats are designed to be compatible with a variety of resins. The mats are used with gel-coats and standard laminate reinforcement for hand lay-up applications. They provide superior performance in construction, transportation, anti-corrosion, and marine end-use markets.

Basalt UD Weave

Basalt UD weave fabric can be used as a high performance engineering material. Basalt UD fabric, can be coated with suitable sizing for polyester, epoxy, phenolic and nylon resins, to improve the reinforcement effect of the basalt fabric. Basalt fibre may be used as heat protection on steel beams, or applied to bridges, where it is suitable for reinforcement and repair of bridge decks, beams and columns. Can be used to manufacture radar dome covers, engine parts, and provide strength to armoured vehicle bodies and structural parts.
Unidirectional fabric and tapes.

Uni-directional fabric

Uni-directional fabric are manufactured to different thickness, weight, weave pattern, width and weaving technique according to end-use requirements, which are widely used for structural, electro-technical, general and specialised purposes for automobiles, aircraft, ships and household applications. Also, it can be used for producing soft and rigid roofing, printed circuit boards for electronics, fire feltings for suppression of fires resulting from highly inflammable liquids, repairing the interior and exterior of tubes and pipelines.

Satin weave fabric

Satin weave fabric Satin weave fabric can be used for suppression of extremely complex fires resulting from ignition of highly flammable liquids, such as petroleum products. Incombustible satin fabric can be installed as linings in industrial ventilator systems to increase their fire safety and fire resistance. The material can be used for blast curtaining. Satin weave materials enable them to resist flames for long periods. It is permeable and so is not effective as air curtaining, in mines.

Basalt Rope

Basalt ropes can be made into different shapes like squared, rounded and just simply assembled and twisted. These ropes which are made from basalt roving or twisted yarn can be widely used for packing, repair or reinforcement. Also, the rope can be coated different resin to be compatible with varied applications. Basalt rope is used in Ecoshell type dome structures where its ease of application, and non-corrosive characteristics have made it essential in dome reinforcement.

Insulation sleeves

The sleeves have outstanding electric insulation, high temperature resistance, and chemical-corrosion resistance that make it the best choice for shrouding cables in electrical apparatus. The rolled sleeves can be used to insulate pipelines. The tubular weaves can prevent fire risk to sub-station cables. The insulation weave can be applied over turbo ducting, and exhaust pipes in the automotive field, where temperatures may be maintained for efficient catalyst performance.

Basalt reinforcement mesh

Basalt reinforcement mesh can be used in reinforcing tunnel walls in shotcrete. A double layer of 25 x 25mm mesh absorbed a load of 65 m t and gave a result of 850 joules in an EFNARC plate test. The mesh can also be used to produce self-standing walls and small thin-walled structures. Another valuable use is as a wrap over damaged or corroded concrete. Excellent for repairing sulphate attacked concrete in sewage plants where the fibre material is combined with gunite. The material is light and easily handled on site.

Basalt Mesh

Basalt Mesh is better than steel for many reasons. It is stronger than steel wire of comparable size, is far lighter, easier to handle, and install. Mesh is available in 5 x 5mm, 10 x 10mm, 25 x 25mm and 50 x 50mm sizes. The finer meshes are easily uses in mortar strengthening and can be used in the manufacture of thin-wall concrete structures. The mesh will not rust or corrode or cause cracking of concrete. Other uses include concrete kitchen table tops, hand applied repair mortars, and even in asphalt pothole repair material reinforcing.

Continuous fibre geo-grid

Continuous fibre geo-grid is made by impregnating an open weave fibre material with asphalt, and then drying. The geo-grid reinforced asphalt has excellent resistance to deformation. The reinforced asphalt performs extremely well at high temperature and under frost conditions, has high tensile strength, ultraviolet resistance, stable chemical and ageing resistance. When used in road surfaces, it prevents asphalt from cracking, potholing, rutting, or creeping. The 25 x 25mm mesh is available in widths of 1m to 4m. Roll lengths are 50m, 100m, and 200m.

Rebar Geo-Grid

This Geo-grid is made from 4mm diameter rebar. The rebar has high strength and chemical resistance, which gives it high-quality and performance characteristics. The cross-overs are bonded with a basalt roving coated with a special resin. 25 X 25mm and 50 X 50mm sizes are available in 1m and 2m widths. Because it is made from rebar, it is packed flat and piece by piece. The material is used in special construction projects.

StoneRod rebar

StoneRod rebar is a technically advanced material, which can replace steel rebar. Different sized rebars are available. Surface finish of bars includes sand-coated, uncoated, and deformed bars. The rods are used for dome housing foundation reinforcement. They can be used in sidewalks, concrete pavements, facing slabs and many other construction units. Their high electro-insulating properties make them very suitable in areas where stray currents cause havoc with rebar integrity. StoneRod rebar has not yet been approved for civil engineering in SA.

Steel cored rebar

Steel cored rebar is normal rebar over coated with a basalt rebar covering. The benefits of steel are retained without its tendency to rust and corrode. The rebar cannot be bent on site, as bending will damage the exterior covering. Therefore links and bends have to be factory produced. The basalt covering will assist in the prevention of heat damage, as the basalt exterior is heat resistant.

StoneRod fibre strip

Fibre Composites strip is manufactured for use as external reinforcement on beams, bridge decks, and in tunnels. The strip is adhered to correctly prepared substrates, using a suitable epoxy resin. Composite strip has a high tensile strength and can replace expensive carbon fibre strip systems. It far exceeds external steel addition qualities, in that it is non-corrosive, even in salt laden conditions. It is fire resistant as well as being resistant to aggressive chemicals, and operates in both low and high temperature zones.

Exhaust wrap tape

Basalt tape is a heat resistant tape used to wrap exhaust pipes, as well as in air-conditioning and refrigeration. Heat losses reduce total efficiency in air intakes, intercoolers, superchargers, turbo pipes and tubing. Made from continuous filament basalt, it is non-combustible and fire resistant. with exhaust wrap tape, exhaust gases are hotter, improving the efficiency of turbos, and improving catalytic gas conversion. Higher temperatures increase intake velocity, and assist in scavenging cylinders more efficiently.


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