MC-Bauchemie MC-DUR Grout LE 10
A low-viscosity, low-exotherm epoxy grout built for precision machine-foundation and base-plate grouting under dynamic load.
What is it?
A three-part (resin, hardener and silica filler), solvent-free epoxy resin grout engineered for low viscosity and low exothermic heat during cure.
Where is it used?
Machine and equipment foundations, base plates for turbines, compressors and DG sets, rail track and anchor-bolt fixing, and any application under dynamic or cyclic load needing a non-shrink, high-early-strength grout.
Why use it?
Reaches ≥60 N/mm² compressive strength within 24 hours, achieves over 95% effective bearing area, and its low peak exotherm (roughly 43-54°C) avoids the thermal cracking that can affect ordinary epoxy grouts poured in Indian heat.
How is it applied?
Resin and hardener (3:1 by weight) are mixed first, then blended with the supplied silica filler and poured continuously from one side through rigid, leak-proof shuttering, in grouting depths of 3-15mm.
About MC-Bauchemie MC-DUR Grout LE 10
MC-DUR Grout LE 10 is MC-Bauchemie’s precision epoxy grout for jobs where a standard cementitious grout simply will not do — narrow clearances, aggressive dynamic loading, or a shutdown window too short to wait a week for design strength. It ships as a genuine two-component, solvent-free epoxy resin and hardener, mixed 3:1 by weight, which is then blended on site with a pre-proportioned fine silica filler (the third component) to form the pourable grout. That filler is part of what keeps the exotherm down — an uncontrolled heat spike during cure is a known failure mode with cheaper epoxy grouts, cracking the pour from the inside before it ever sees a load.
On Indian sites this shows up most often under machine foundations — compressors, DG sets, turbines, and any base plate carrying vibration or cyclic load that a general-purpose grout would eventually work loose from. The listed 24-hour compressive strength of 60 N/mm² is real enough to matter for shutdown-driven jobs where a plant wants the machine running again within a day of grouting, not a week. The trade-off is the one every precision epoxy grout carries: a roughly 70-minute pot life, rigid leak-proof formwork, and a crew that has actually mixed epoxy grout before, not a first-time labour gang applying cementitious-grout habits to it.
The technical insight
The number worth scrutinising on any epoxy grout datasheet is peak exotherm, not just compressive strength — most epoxy grout failures trace back to heat, not load. MC-DUR Grout LE 10’s datasheet lists peak exotherm of roughly 43°C at 25°C ambient, rising to about 54°C at 34°C ambient (per ASTM D2471 on a 415ml mass), which is a genuinely low reading for an epoxy system and explains the “LE” (low exotherm) in the name. Combined with a flowability of 225mm (IS 5512) and ≥95% effective bearing area per ASTM C1339, it is built specifically for the narrow 3-15mm gaps where trapped air and thermal stress do the most damage to a pour.
Where it is used
- Base-plate and soleplate grouting for compressors, pumps, turbines and DG sets under dynamic load
- Crane rail and gantry rail precision grouting in fabrication yards and heavy-engineering shops
- Anchor-bolt and holding-down-bolt fixing for structural steel and heavy machinery
- Wind turbine tower base-plate grouting subject to cyclic wind-load fatigue
- Railway and metro track-bed anchor and rail-fastener grouting
- Bearing-plate grouting for bridge and structural-steel elements exposed to vibration
- Precision grouting on chemical, oil-spillage-prone or acid-exposed industrial floors
- Shutdown re-grouting of existing, worn machine foundations where fast strength gain is critical
Key advantages
- Reaches ≥60 N/mm² compressive strength in just 24 hours (ASTM C579), letting equipment restart fast after a shutdown pour
- Low peak exotherm (~43°C at 25°C ambient, ~54°C at 34°C, per ASTM D2471) reduces the thermal-cracking risk that plagues ordinary epoxy grouts in hot Indian pours
- Non-shrink, dimensionally stable formulation keeps permanent contact under vibration and cyclic load
- 225 mm flowability (IS 5512) and ≥95% effective bearing area (ASTM C1339) even in narrow 3-15 mm gaps
- Solvent-free composition is safer to mix and pour in confined machine rooms
- Pre-packed, proportioned resin, hardener and filler components cut site batching errors
- High compressive and tensile strength with good resistance to oils and mild chemical spillage
- Backed by MC-Bauchemie India’s own datasheet and Space Arc’s trained applicator support, not just imported literature
Limitations & considerations
- Restricted to a 3-15mm grouting depth — the wrong choice for deeper pours or large-volume static bases
- Roughly 70-minute pot life demands disciplined batch sizing, especially in Indian summer heat
- Costs meaningfully more per litre than cementitious grouts, so it isn’t economical for general-purpose static base plates
- Application window is capped between +5°C and +45°C surface temperature, limiting peak-summer midday and cold-morning pours
- Needs rigid, leak-proof formwork and an experienced epoxy-grouting crew — unforgiving of improvised cementitious-grout habits
- Brown resin colour and mixing odour call for ventilation when working in enclosed machine rooms
Selection & best practice
Keep resin and hardener at 25-30°C before mixing — cold epoxy in north Indian winters thickens and won’t hit its 225mm flowability, while a slab surface above 45°C means you stop grouting altogether per the datasheet. Mix resin and hardener alone for about a minute, then fold in the supplied silica filler and mix again for 1-2 minutes before pouring; never batch more than you can place inside the ~70-minute pot life. Pour continuously from one side (or from the centre through a funnel on larger plates) to chase air out and hit the >95% EBA the datasheet promises — stopping mid-pour is the single most common site defect with this class of grout. Keep the shoulder length of the shuttering to a maximum of 20mm and avoid vibration or shock near the pour for the first few hours.
Specifications
| Chemistry / system | Two-component, solvent-free epoxy resin and hardener with a fine silica filler (third component) |
| Density (mixed) | 2.2 ± 0.05 kg/litre at 30°C |
| Mixing ratio (by weight) | Resin : Hardener = 3 : 1 |
| Recommended grouting depth | 3-15 mm |
| Flowability | 225 mm (as per IS 5512 @ 30°C) |
| Effective Bearing Area (EBA) | ≥95% (as per ASTM C1339) |
| Compressive strength | ≥60 N/mm² @ 24 hrs; ≥80 N/mm² @ 3 days; ≥100 N/mm² @ 7 days (ASTM C579) |
| Pot life | ~70 minutes (100g mass @ 30°C) |
| Pack size | Resin 4.5 kg (4L bucket) + Hardener 1.5 kg (1L bucket) |
Industry use cases
Power & process plants
Base-plate grouting for turbine, compressor and DG-set foundations during planned shutdowns, where 24-hour strength gain lets equipment be recommissioned fast.
Heavy engineering / fabrication
Precision grouting under crane rails and gantry rail base plates subject to constant cyclic loading.
Renewable energy
Wind turbine tower base-plate grouting, where fatigue resistance under cyclic wind load is non-negotiable.
Railways / metro
Anchor-bolt and rail-fastener grouting on concrete track beds and switches.
Industrial maintenance
Re-grouting an existing, worn cementitious machine base during a shutdown window, without waiting on long cementitious cure cycles.
Frequently asked questions
How is MC-DUR Grout LE 10 different from a cementitious non-shrink grout?
Can this grout be used for gaps wider than 15mm?
How soon can the machine be started after grouting?
What temperature range can it be applied in?
Is the silica filler mixed in already, or do we add it on site?
Does Space Arc supply and apply this, or just supply the material?
How we position MC-Bauchemie MC-DUR Grout LE 10
Within MC-Bauchemie’s own range, MC-DUR Grout LE 10 sits alongside the company’s cementitious non-shrink grouts, reserved for jobs where dynamic load or a narrow clearance rules those out. The closest genuine market alternative is Fosroc’s Conbextra EP10, a similarly solvent-free, low-viscosity epoxy grout built for the same machine-foundation and base-plate work — specifiers already standardised on Fosroc elsewhere on a project, or simply wanting the more globally recognised name, often default to it. For static, general-purpose base plates with wider gaps and a tighter budget, a cementitious grout (Fosroc’s Conbextra GP2 or MC-Bauchemie’s own cementitious grades) remains the more economical call.
Fosroc Conbextra EP10 — Specifiers already standardised on Fosroc for other site packages, or wanting a more globally recognised name for machine-foundation grouting, often specify Conbextra EP10 as the equivalent low-viscosity, solvent-free epoxy grout.
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