MC-Bauchemie MC-Grout 100
A free-flowing, non-shrink cementitious precision grout from MC-Bauchemie for machinery base plates, column bases and anchor pockets — engineered to fill tight clearances without vibration and hold full bearing contact under load.
What is it?
A factory-blended, single-component cementitious precision grout that mixes with clean water into a flowable, non-shrink mortar. A gas-generating expansion system offsets plastic settlement so the hardened grout stays in intimate contact with the baseplate and foundation.
Where is it used?
Under machinery base plates, structural steel column bases, crane rail pads, precast bearings, bridge bearing pads and anchor-bolt pockets — anywhere a dense, void-free load path is needed between steel and concrete.
Why use it?
It delivers early strength for quick machine commissioning, flows into gaps as tight as 10 mm without vibration, and does not shrink away from the load-bearing surface — so the whole footprint carries load instead of a few high spots.
How is it applied?
Gauge with 0.16 to 0.20 litres of water per kg of powder, mix to a lump-free flowable consistency, then pour continuously from one side into a formed, pre-soaked pocket so the grout front pushes air ahead of it.
About MC-Bauchemie MC-Grout 100
MC-Grout 100 is MC-Bauchemie’s general-purpose precision grout for situations where a steel component has to transfer load cleanly into a concrete foundation. It arrives as a ready-blended dry powder — Portland cement, closely graded fillers and performance additives — so the site crew only has to add a measured amount of clean water. That single-bag simplicity matters on a busy plant floor: there is no separate aggregate to batch, no field guesswork on proportions, and far less scope for the mix-to-mix variation that plagues site-mixed sand-cement grouts. Add water within the stated band, mix, and pour.
What sets a precision grout apart from ordinary mortar is what happens in the first few hours. A conventional cement mix bleeds and settles as it sets, leaving a thin void directly under the plate — exactly where you need contact. MC-Grout 100 carries a controlled gas-expansion system that produces a slight positive volume change while the grout is still plastic, counteracting that settlement. The result is a hardened block that stays hard up against the underside of the baseplate, so bearing is spread across the full contact area rather than concentrated on a handful of high points that can crack or fret under repeated load.
The technical insight
The performance hinges on two mechanisms working in the plastic phase. First, the mix is engineered as a flowable but stable system: graded fillers and a tuned water demand let it self-level and travel under a plate by gravity alone, yet resist the bleeding and segregation that would otherwise leave water lenses and weak zones. Because it flows to an ASTM C939 cone consistency, it reaches the far corners of a pocket and fills clearances down to about 10 mm without needing a vibrator — which is precisely where vibration cannot reach anyway. Second, the gas-generating agent releases fine bubbles that gently expand the grout before it stiffens, compensating for plastic settlement and shrinkage so the net volume change stays at zero or slightly positive (the non-shrink behaviour assessed against ASTM C1090 / BS EN 1771). Together these mean the cured grout keeps full-area contact with the load-bearing surfaces. On the strength side, the low water-to-powder ratio and dense filler packing build early load capacity — around 30 MPa by 24 hours lets many machines be commissioned the next day — climbing to roughly 45 to 60 MPa at 28 days for sustained static and moderate dynamic duty.
Where it is used
- Grouting under rotating and reciprocating machinery base plates (pumps, compressors, fans)
- Filling clearances beneath structural steel column base plates
- Bedding crane girder and rail pad plates subject to repeated load
- Precast concrete bearing and connection grouting
- Bridge bearing pad and pedestal grouting
- Anchor-bolt and holding-down bolt pocket filling
- Grouting of transmission and equipment support pedestals
- Void filling under machine skids and steel frames
Key advantages
- Single pre-blended powder — only clean water is added on site, cutting batching errors
- Free-flowing to an ASTM C939 cone, self-levels and fills gaps down to ~10 mm without vibration
- Non-shrink gas-expansion system keeps full contact under the baseplate (ASTM C1090 / BS EN 1771)
- Early strength of about 30 MPa at 24 hours supports fast plant commissioning
- 28-day compressive strength of roughly 45 to 60 MPa for durable load transfer
- Chloride-free formulation, suited to embedded steel and anchor bolts
- Consistent, factory-controlled quality batch to batch
- Supported by MC-Bauchemie technical data and Space Arc site guidance across Delhi NCR and Pan-India
Limitations & considerations
- Cementitious grout — not intended for aggressive chemical exposure or high sustained dynamic loads where an epoxy grout is specified
- Water addition must stay within 0.16 to 0.20 L/kg; exceeding it causes bleed, segregation and lost strength
- Neat grout is generally poured for thin sections (up to ~50 mm); thicker or larger pours may need approved graded aggregate extension per the TDS
- Requires formed, leak-tight shuttering and pre-soaked, saturated-surface-dry substrate to flow and cure correctly
- Sensitive to placement temperature — hot or cold weather shortens or extends working time and needs the usual precautions
- Must be poured continuously from one side; interrupted or two-sided pours trap air and leave voids
Selection & best practice
Prepare the concrete first: it must be sound, clean, free of oil and laitance, and pre-soaked so the surface is saturated but with no standing water, otherwise the substrate drinks water out of the grout and kills the flow. Build stiff, leak-tight formwork with a head box or funnel on the pour side and enough clearance on the far side to let air and any surplus grout escape. Gauge the water accurately — measure it, don’t estimate — and keep it between 0.16 and 0.20 litres per kg of powder; the lower end gives higher strength, the upper end more flow. Mix mechanically with a slow-speed paddle to a uniform, lump-free consistency, then pour continuously from one side only so the advancing grout front sweeps air out ahead of it rather than folding it in. Never trowel or tamp from both sides. Place the full pour within the working time, and once stiff enough, cure the exposed edges immediately with wet hessian or a curing membrane to prevent surface crazing. In Indian summer conditions, use cool mixing water and work in shade; in cold conditions protect the pour and expect slower strength gain.
Specifications
| Product type | Non-shrink, free-flowing cementitious precision grout |
| Base chemistry | Portland cement, graded fillers, gas-generating expansion additive |
| Water : powder ratio | 0.16 to 0.20 litres per kg of powder |
| Flowability | Free-flowing to ASTM C939 flow cone; fills gaps down to ~10 mm without vibration |
| Compressive strength (24 h) | ~30 MPa |
| Compressive strength (28 d) | ~45 to 60 MPa (IS 4031 / EN 196-1 cube) |
| Volume change | Zero to slightly positive; non-shrink per ASTM C1090 / BS EN 1771 |
| Reference standards | ASTM C1107, ASTM C1090, ASTM C939, BS EN 1771, IS 4031, EN 196-1 |
Industry use cases
Power & process plants
Grouting base plates of pumps, compressors and boiler feed sets where next-day commissioning depends on early strength and full-contact bearing.
Steel-framed buildings & warehouses
Filling clearances under column base plates so holding-down bolts and plates transfer load evenly into the foundation.
Bridges & infrastructure
Bedding bearing pads and pedestals with a non-shrink block that keeps intimate contact under traffic-induced load cycles.
Material-handling & cranes
Grouting crane girder rail pads and skid frames subject to repeated moving loads without the grout settling away from the plate.
Precast & prefabrication
Grouting precast bearings, connections and anchor pockets on site to lock elements into position with a dense, void-free fill.
Frequently asked questions
How much water do I add to MC-Grout 100?
How soon can I load or commission the machine after grouting?
Is it really non-shrink, and why does that matter?
What gap or thickness can MC-Grout 100 fill?
When should I choose an epoxy grout instead?
Does Space Arc supply MC-Grout 100 and support the application?
How we position MC-Bauchemie MC-Grout 100
MC-Grout 100 sits at the workhorse end of the precision-grout range — the right call for the majority of base-plate, column-base and anchor jobs where a reliable, non-shrink cementitious fill is what the spec asks for. Where a project demands chemical resistance, oil contact or heavy dynamic loading, step up to an epoxy grout from within the MC-Bauchemie family (the MC-DUR Grout epoxy range) or to Fosroc’s Conbextra EP-series. For very high-flow or micro-concrete repair scenarios rather than pocket grouting, consider a flowable micro-concrete. Because Space Arc carries Fosroc, Sika, Dr. Fixit and other lines alongside MC-Bauchemie, we can match whichever brand a consultant has named on the drawings without compromising on the grout’s performance requirements.
Fosroc Conbextra GP2 — Specify Conbextra GP2 when the project or client standard names Fosroc as the approved grout — it is the directly equivalent free-flowing, gas-expansion, non-shrink cementitious precision grout for the same base-plate and anchor applications.
Related Grouts & Anchors products
Source MC-Bauchemie MC-Grout 100 for your project
Authorised distribution, technical advice & professional application across Delhi NCR and Pan-India.