Need to strengthen a reinforced concrete element but no space for new rebar? Traditional methods require rebar and thick cover. Geolite Magma Xenon with Steel Fiber provides pourable, fiber-reinforced concrete — without rebar, from just 15 mm. Flexible, CVT certified, with C80/95 strength. This is Kerakoll Geolite Magma Xenon.
Geolite is the first geo-mortar for repairing damaged reinforced concrete: Kerakoll geo-binder, with near-zero shrinkage and high chemical resistance.
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Reinforced concrete strengthening without new rebar: fiber-reinforced FRC concrete with Steel Fiber — the fiber carries the load, no rebar installation needed
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Limited space, thin reinforcement: works from just 15 mm layer thickness — even where thick cover is not possible
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Crack-resistant, flexible reinforcement: highly flexible, permanent flexural-tensile strength with 8b load resistance class (CVT)
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High load capacity: C80/95 compressive strength, 43.41 GPa modulus of elasticity in fiber-reinforced system (CVT 434/2020)
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Pourable, for formwork and arch crowns: flows and fills the mold — for vertical and horizontal elements, underpinning
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Suitable for outdoor, aggressive environments: waterproof (0 mm penetration), frost resistant, wide exposure class range (X0–XA1)
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Rusting reinforcement steel: alkaline mineral chemistry passivates existing steel (EN 1504-7)
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Non-combustible: A1 fire resistance class — geo-binder based, mineral composition
| Type |
Pourable, fiber-reinforced FRC geo-mortar (with Steel Fiber) |
| Binder |
Mineral geo-binder, inorganic |
| Performance |
CVT certified FRC (434/2020); C80/95 · load resistance class 8b |
| Layer thickness |
min. 15 mm – max. 40 mm |
| Setting time |
long, setting > 360 minutes (pot life ≥ 60 minutes) |
| Material requirement |
≈ 20 kg/m²/cm; 25 kg ≈ 0.83 m² (15 mm layer) |
| Packaging |
25 kg bag |
| Storage |
≈ 12 months |
What is it suitable for?
Substrates: Healthy, load-bearing reinforced concrete and concrete — both outdoors and indoors. On horizontal concrete after Primer Uni substrate preparation.
Usage: Fiber-reinforced (FRC) strengthening, passivation, restoration, and monolithic consolidation of reinforced concrete structures and infrastructures — without embedded rebar, in thin layers: poured into formwork for vertical elements and inside arches; poured on arch crowns and mandatory cross-section underpinning. Also for precision anchoring of base plates, rods, and machinery.
Not suitable: without Steel Fiber (the system is certified and complete only with the fiber); in layers thinner than 15 mm; on contaminated, loose, crumbling, or dusty substrates; on gypsum, metal, wood; on surfaces below +5 °C, above +40 °C, or frozen.
The Geolite concrete repair system
| 1. Substrate preparation |
Primer Uni — adhesion and absorption control on horizontal concrete |
| 2. Fiber reinforcement |
Steel Fiber — mixed with Xenon to provide FRC load capacity |
| 3. Pourable FRC reinforcement |
Geolite Magma Xenon — this product, fiber-reinforced, reinforcement without steel |
| 4. Protective topcoat |
Geolite MicroSilicato — breathable, carbonation inhibitor |
Which pourable Geolite do you need?
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Fiber-reinforced FRC, without reinforcement, ready mix: Geolite Magma Xenon — this product, CVT certified
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Multipurpose casting, deep repair (60 minutes): Geolite Magma — R4 (also FRC with Steel Fiber)
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Fast precision anchoring, in cold conditions (20 minutes): Geolite Magma 20 — volume expanding
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Hand/machine application, vertical surface (2–40 mm): Geolite — thixotropic, R4 (semi-fast: 40, fast: 10)
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Lightweight, non-structural smoothing (2–50 mm): Geolite Silt — R2
Frequently Asked Questions
How can a reinforced concrete element be strengthened without new steel reinforcement?
Fiber-reinforced (FRC) concrete, where steel fibers carry the tensile load instead of steel reinforcement. Geolite Magma Xenon mixed with Steel Fiber provides a pourable, fiber-reinforced reinforcement from just 15 mm layers, with CVT certification. No steel reinforcement or thick cover is needed.
What is FRC fiber-reinforced concrete?
FRC (Fiber Reinforced Concrete) is concrete reinforced with steel fibers, where the fibers take over the role of steel reinforcement. Geolite FRC is a blend of Magma Xenon and Steel Fiber: a flexible, crack-resistant reinforcement with C80/95 strength. The system is certified by the Italian CVT (434/2020).
Is Steel Fiber required, or is it sold separately?
Geolite Magma Xenon together with Steel Fiber forms a certified FRC system — the fiber must be added to the mix. The reinforcement’s load capacity depends on the fiber, so they must be used together. Steel Fiber is supplied separately.
Why is it good that it works from 15 mm thickness?
Because many elements don’t have space for thick reinforcement and new rebar installation. Geolite Magma Xenon provides structural load-bearing capacity from just 15 mm thickness, without steel reinforcement. This keeps the structure slim and avoids increasing the cross-section.
Geolite Magma, Magma 20, or Magma Xenon — which one do I need?
All three pourable geo-mortars serve different purposes. Magma Xenon is a ready fiber-reinforced FRC mix — for reinforcement without rebar. Magma is a multi-purpose repair/consolidation mortar (also FRC with Steel Fiber). Magma 20 is fast and volume-expanding — for precision anchoring.
Can it be used outdoors, in aggressive environments?
Yes, Geolite Magma Xenon is waterproof (0 mm water penetration), frost-resistant, and meets a wide range of exposure classes (from X0 to XA1). It is suitable for outdoor reinforced concrete structures exposed to precipitation and freeze-thaw cycles. It passivates existing rebar.
Is a primer needed under Geolite Magma Xenon?
For horizontal concrete surfaces, Primer Uni substrate preparation is recommended. The substrate must be clean, solid, and ≥ 5 mm rough; rust must be removed from the rebar. Before casting, wet the surface thoroughly.
When should I NOT use this mortar?
Do not use without Steel Fiber, in layers thinner than 15 mm, on dirty or loose substrates, gypsum, metal, or wood. Do not work with it below +5 °C, above +40 °C, on frozen surfaces, or in rain. For simple, non-structural repairs, Geolite or Geolite Silt is sufficient.
Can I apply it myself?
No — fiber-reinforced FRC reinforcement requires structural design and expertise: precise sizing, exact fiber ratio adherence, and professional casting. This is a certified structural intervention. We undertake the complete execution.
