STP ShaliGrout EP 10 M
Three-component, non-shrink epoxy grout engineered for turbines, compressors and other dynamically loaded machine foundations where alignment and impact strength cannot be compromised.
What is it?
A three-component (resin, hardener and graded aggregate) free-flow epoxy grout from STP, formulated for machinery bases that carry heavy dynamic and vibratory loads.
Where is it used?
Under turbine, generator, compressor and pump base plates; deep anchor-bolt pockets; crane rails; and precision machine tool foundations across power, steel and process plants.
Why use it?
It holds machinery in precise alignment without shrinkage, resists impact and oil-fuel attack, and returns equipment to service fast because it needs no special curing.
How is it applied?
Mix hardener into resin, blend in the aggregate, then pour into the head box and let it flow under the plate at 25 to 150 mm per lift.
About STP ShaliGrout EP 10 M
ShaliGrout EP 10 M is STP’s modified-grade epoxy grout built for the one job cementitious grouts struggle with: keeping heavy, vibrating machinery locked in alignment for the long haul. Supplied as three separate components, a resin, a hardener and a pre-weighed graded aggregate, it cures into a dense, non-shrink mass that transfers load evenly from the base plate into the foundation. On paper the product carries the ShaliGrout EP 10 family designation (formerly ShaliGrout EP P); the “M” denotes the modified grade Space Arc supplies for vibratory and heavy-equipment duty, where impact strength and creep resistance matter as much as raw compressive figures.
For engineers and contractors in Delhi NCR and across India, the appeal is practical. The grout flows freely enough to fill the awkward voids under a large base plate yet builds real structural capacity, exceeding the tensile and shear strength of the surrounding concrete in bond. It meets ASTM C 307 (Type I, Grade II, Class A) for chemical-resistant mortars and satisfies the thermal-compatibility-with-concrete requirement of ASTM C 884, so it behaves predictably through the heating and cooling cycles a running machine imposes. Space Arc stocks it as an authorised STP distributor and applicator, which means the material, the method statement and the site support arrive together rather than as three separate problems.
The technical insight
The performance comes from what an epoxy binder does that a cement binder cannot. Cementitious grouts gain strength through hydration and inevitably shrink a little as they cure and dry, leaving micro-gaps that let a vibrating plate rock and fret. ShaliGrout EP 10 M cures by a chemical cross-linking reaction between the resin and hardener, so linear shrinkage is negligible and the cured mass stays in full, gap-free contact with both the foundation and the underside of the plate. The graded aggregate (component C) is the second half of the mechanism: it fills volume with an inert, high-modulus filler that lifts compressive strength toward 1000 kg/cm2, holds down creep under sustained load, and keeps the exotherm and cost of a pure-resin pour in check. Because the bond to prepared concrete exceeds the concrete’s own tensile and shear strength, dynamic loads are spread into the foundation instead of concentrating at the interface, which is exactly where ordinary grouts crack and pump out.
Where it is used
- Grouting turbine and generator base plates in power plants
- Bedding reciprocating compressors, pumps and fans that transmit vibration
- Deep-fill grouting of heavy machine bases and skid frames
- Anchoring large hold-down bolts and filling keyways and block-outs
- Grouting crane rails and other high-strength rail-bearing installations
- Re-grouting machinery after realignment or foundation repair
- Machine tool and press bases in precision manufacturing plants
- Rolling mill and process-equipment foundations in steel and cement works
Key advantages
- Non-shrink cure keeps machinery in precise, lasting alignment
- Very high bearing capacity, with compressive strength reaching about 1000 kg/cm2 at 14 days
- Bond to concrete exceeds the tensile and shear strength of the substrate
- High impact and abrasion resistance, both greater than concrete
- Free-flow consistency fills voids fully under wide base plates
- Resists oils, fuels and most chemicals encountered around machinery
- Fast return to service, with no special curing procedure required
- Low creep and stable performance in deep or thick sections
Limitations & considerations
- Temperature-sensitive flow: cold conditions stiffen the mix and complicate base-plate grouting, while high temperatures speed flow but shorten working time
- Short gel time of about 45 to 60 minutes at 30 C means each pour must be planned, mixed and placed without delay
- Three-component system demands correct on-site batching and thorough mixing; guesswork with part packs risks under-cure
- Placement is bounded to 25 mm minimum and 150 mm maximum per lift, so very thick sections need staged pours
- Requires mechanically prepared, oil-free concrete at least 28 days old; it is not a fix for weak or contaminated substrates
- Higher material cost than cementitious grout, justified only where dynamic load or chemical exposure demands epoxy
Selection & best practice
Start with the substrate: the concrete should be at least 28 days old, sound and mechanically roughened to a minimum 3 mm profile by scabbling, bush-hammering or shot-blasting, then vacuumed free of dust, oil and debris. Bring the grout components, the foundation and the base plate as close to normal room temperature as possible before you begin, since temperature drives both flow and working time. Mix component B (hardener) into component A (resin), never the reverse, for about two minutes with a slow-speed drill mixer, then add the aggregate (component C) gradually and mix a further two to three minutes until every particle is wetted out. Build a head box on one side, pour from that single side and let the grout flow under the plate to avoid trapping air; pre-placed straps help work it across. Keep each lift between 25 and 150 mm, use shuttering lined with polythene or ShaliSlip to stop leakage, and place the whole batch within the gel time. Clean tools immediately with xylene or toluene, and always work in gloves, mask and eye protection.
Specifications
| Product type | Three-component (resin + hardener + aggregate) epoxy grout, modified grade |
| Compressive strength (50 mm cube) | 700 kg/cm2 at 24 hrs, 900 at 7 days, 1000 at 14 days |
| Flexural strength (7 days) | 280 kg/cm2 |
| Tensile strength (28 days) | 150 kg/cm2 |
| Gel time at 30 C | 45 to 60 minutes |
| Consumption / yield | 1950 kg/m3 |
| Placement thickness | 25 mm minimum to 150 mm maximum per lift |
| Standards | ASTM C 307 (Type I, Grade II, Class A); ASTM C 884 thermal compatibility |
| Pack size / shelf life | 16 kg pack; 9 months unopened in cool, dry storage |
Industry use cases
Power generation
Grouting turbine, generator and large compressor base plates where vibration and thermal cycling would open gaps under any shrinking cementitious grout.
Steel & heavy industry
Bedding rolling mill stands, presses and crane rails that see continuous impact and abrasion, using the grout’s above-concrete impact and bond performance.
Process & chemical plants
Anchoring pumps, fans and reciprocating equipment in areas exposed to oil, fuel and mild chemical spillage, where epoxy chemical resistance is essential.
Manufacturing & machine tools
Setting precision machine tool and CNC bases that must hold alignment to fine tolerances under dynamic cutting loads.
Maintenance & shutdowns
Fast re-grouting of machinery after realignment during plant turnarounds, taking advantage of quick strength gain and no special curing.
Frequently asked questions
How is ShaliGrout EP 10 M different from a normal cement grout?
What compressive strength does it reach and how fast?
How thick can I pour it in one lift?
What is the working time once mixed?
How much area or volume does one pack cover?
What surface preparation does it need?
How we position STP ShaliGrout EP 10 M
Within the STP range, pair ShaliGrout EP 10 M with ShaliGrout GP or a cementitious non-shrink grout for lighter static base plates where epoxy is overspecified, and use ShaliSlip as the shutter release when forming head boxes and side dams. For crack and honeycomb repair alongside a grouting job, STP’s low-viscosity epoxy injection resins are the logical companion. Where a project specifies Fosroc, Space Arc also supplies the equivalent Conbextra epoxy grout line, and across our other brands we can offer Sika and MC-Bauchemie epoxy grouts to match a consultant’s approved-vendor list. As an authorised distributor and applicator across Delhi NCR and Pan-India, we can match the exact grade to your machine loads, foundation condition and specification rather than pushing a single product.
Fosroc Conbextra EP10 — A specifier already standardised on the Fosroc range, or one who prefers a two-component pre-blended epoxy grout with published crack-injection capability, may choose Conbextra EP10 as the direct equivalent.
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Authorised distribution, technical advice & professional application across Delhi NCR and Pan-India.