MC-Bauchemie MC-Injekt 3060
A two-component, solvent-free epoxy injection resin from MC-Bauchemie that penetrates hairline cracks and welds a structure back to monolithic strength.
What is it?
A two-part, solvent-free, low-viscosity epoxy injection resin (Part A resin + Part B amine hardener) engineered to fill and structurally re-bond dormant cracks in concrete and masonry.
Where is it used?
Static structural cracks in beams, columns, slabs, bridge girders, retaining walls, foundations and pile caps, plus consolidation of stone and masonry.
Why use it?
It restores load-transfer across a cracked section, sealing at pressure into cracks as fine as 0.1 mm while curing to over 80 MPa with a bond stronger than the parent concrete.
How is it applied?
Pressure-injected through surface or packer ports at 1 to 5 bar after the crack face is sealed, then left to cure undisturbed.
About MC-Bauchemie MC-Injekt 3060
MC-Injekt 3060 is a structural crack-injection resin built for the situation every repair engineer knows well: a concrete member has cracked, the crack is stable and no longer moving, and the section needs to behave as one piece again rather than two halves held together by reinforcement alone. It is a two-component epoxy, supplied as a resin base and an amine hardener that are combined in a fixed 3:1 ratio by mass. Once mixed the material is deliberately thin, sitting at roughly 200 to 400 mPas at 25 degrees Celsius, which is what lets it travel deep into a crack instead of bridging only the mouth. The system is solvent-free and effectively 100 percent solids, so there is no shrinkage from evaporation and no VOC load to worry about on enclosed sites.
For contractors and consultants working to European repair standards, the resin is positioned within the EN 1504 framework covering both structural bonding (Part 4) and crack injection (Part 5). In practical terms that means MC-Injekt 3060 is not a cosmetic filler that hides a crack; it is a load-bearing adhesive that re-establishes the tensile continuity of the concrete. After curing it develops compressive strength in excess of 80 MPa and a bond to sound concrete that exceeds the tensile strength of the substrate itself, so a pull-off test failing in the parent concrete rather than at the glue line is the expected and desired result. Space Arc supplies it as an authorised MC-Bauchemie channel across Delhi NCR and pan-India, with applicator support for teams new to pressure injection.
The technical insight
The mechanism that makes an epoxy injection resin work is capillary and pressure-driven penetration followed by a rigid, high-modulus cure. Because MC-Injekt 3060 is formulated to a low mixed viscosity, surface tension does not stop it at the crack entrance; under an injection pressure of 1 to 5 bar it is pushed along the full depth and length of the fissure, reaching widths down to about 0.1 mm. As the amine hardener reacts with the resin the material gels over roughly 90 to 120 minutes at 25 degrees Celsius, giving crews enough working time to keep a port flowing before the resin sets. The extended open time is deliberate: on a deep or branching crack, resin that stiffens too early leaves voids the injector can never reach. Once cured, the epoxy behaves as a rigid structural adhesive rather than a flexible sealant, which is precisely why it suits static cracks and not moving joints. The restored bond line carries tension across the section, so the repaired member transfers load as a monolith again instead of relying on the reinforcement to bridge an open crack.
Where it is used
- Consolidating structural cracks in reinforced concrete beams and columns
- Injecting flexural and shrinkage cracks in suspended and ground-bearing slabs
- Sealing and re-bonding cracks in bridge girders and deck soffits
- Repairing dormant cracks in retaining walls and water-retaining structures
- Structural consolidation of stone masonry and heritage brickwork
- Injecting cracks in foundations, rafts and pile caps
- Re-bonding delaminated concrete sections ahead of overlay or coating
- Restoring monolithic action in precast connections and industrial floor slabs
Key advantages
- Low mixed viscosity of about 200 to 400 mPas penetrates cracks down to 0.1 mm
- Cures to over 80 MPa compressive strength for full structural load transfer
- Bond to concrete exceeds the substrate’s own tensile strength
- Solvent-free, 100 percent solids formulation means no shrinkage and no VOC
- Extended gel time of 90 to 120 minutes suits deep and branching cracks
- Covered by EN 1504-4 and EN 1504-5 for documented structural repair
- Fixed 3:1 mix ratio by mass keeps site batching simple and repeatable
- Backed by Space Arc applicator support and pan-India supply
Limitations & considerations
- Suited only to dormant cracks; it is rigid and will not accommodate ongoing movement, for which a flexible PU resin is the correct choice
- Not intended for injecting live water ingress or cracks with running water, where a fast-reacting polyurethane is required
- Crack faces and ports must be sealed before injection or resin escapes under pressure
- Pot life and gel time shorten in hot Indian summer conditions, so mixed quantities must be planned accordingly
- Requires trained operators and proper injection equipment to achieve full-depth filling
- Cured resin should be protected from prolonged UV exposure where left visible
Selection & best practice
Start by confirming the crack is genuinely dormant; injecting a rigid epoxy into a moving crack will simply crack it again beside the repair. Clean the crack line, fix injection ports or packers at appropriate spacing, and seal the surface between ports with a capping paste so the resin builds pressure instead of leaking out. Mix Part A and Part B strictly at 3:1 by mass and only in quantities the crew can inject within the gel time, which tightens in the heat. Inject from the lowest port upward on vertical cracks, or from one end on horizontal ones, moving to the next port only when resin appears there so you know the section is full. Hold pressure between 1 and 5 bar, avoiding excess that can spall thin cover. Leave the completed injection undisturbed to cure, then remove ports and surface seal and finish as required. On damp substrates confirm suitability first, and where water is actively flowing switch to a polyurethane system rather than forcing an epoxy.
Specifications
| Product type | Two-component, solvent-free epoxy injection resin |
| Mixing ratio | 3:1 by mass (Part A resin : Part B hardener) |
| Mixed viscosity | Approx. 200 to 400 mPas at 25 degrees Celsius |
| Gel time | 90 to 120 minutes at 25 degrees Celsius (standard grade) |
| Minimum crack width | 0.1 mm |
| Injection pressure | 1 to 5 bar |
| Compressive strength | Greater than 80 MPa at 7 days |
| Bond to concrete | Exceeds concrete tensile strength (approx. 2.0 to 3.5 MPa pull-off) |
| Standards | EN 1504-4 (structural bonding) and EN 1504-5 (injection) |
Industry use cases
Bridges & Infrastructure
Re-bonding flexural and shear cracks in girders, decks and pier caps so the section regains monolithic load transfer without demolition.
Commercial & High-Rise
Consolidating cracks in beams, columns and post-tensioned slabs during structural audits and pre-handover rectification.
Industrial & Warehousing
Restoring cracked floor slabs and machine foundations to full compressive capacity ahead of overlays or heavy plant loading.
Heritage & Masonry
Deep consolidation of stone and brick structures where the low-viscosity resin travels into fine joints and voids.
Water-Retaining Structures
Sealing dormant cracks in dry retaining walls, tank walls and basements where movement has stabilised.
Frequently asked questions
Can MC-Injekt 3060 be used on cracks that are still moving?
What is the finest crack it can actually fill?
How strong is the repair compared with the original concrete?
What is the mixing ratio and how much working time do I get?
Is it suitable where water is seeping through the crack?
What pack sizes does Space Arc supply and where?
How we position MC-Bauchemie MC-Injekt 3060
MC-Injekt 3060 sits at the structural end of MC-Bauchemie’s injection range, alongside the wider MC-Injekt family that includes fast-reacting polyurethane resins for water-stopping and foaming applications where this rigid epoxy is not appropriate. Choose the polyurethane variants when a crack is live or leaking, and MC-Injekt 3060 when the crack is dormant and full load transfer is the goal. Where a project standardises on a single brand, Space Arc also supplies directly comparable low-viscosity epoxy injection resins from Fosroc and Sika, and can pair the injection resin with surface-sealing capping pastes and structural repair mortars from the same families to complete the repair system.
Fosroc Nitofill EPLV — Specifiers standardising on Fosroc, or working in sustained hot-climate conditions, may prefer Nitofill EPLV, a two-part low-viscosity epoxy injection resin formulated for warm ambient temperatures.
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