STP ShaliGrout EP 10
Three-component free-flow epoxy grout engineered for turbine, compressor and press bases that carry dynamic, vibratory and impact loads.
What is it?
A three-component (resin, hardener and graded aggregate) epoxy grout from STP designed to seat heavy, vibrating machinery on its foundation without shrinkage or creep.
Where is it used?
Under turbine, generator, compressor, pump and press baseplates, in deep machine pockets, anchor-bolt holes and crane-rail beds across power, steel and process plants.
Why use it?
It carries high bearing loads, resists oils and most chemicals, and stays dimensionally stable in thick sections, holding precision alignment under continuous vibration.
How is it applied?
Comp B is blended into Comp A, the aggregate is dispersed in, then the free-flowing mix is poured through a head box under the plate at 25-150 mm per lift.
About STP ShaliGrout EP 10
STP ShaliGrout EP 10 (formerly ShaliGrout EP P) is a high-performance epoxy grout built for the hardest grouting duty on an industrial site: seating machinery that pounds, spins and vibrates. It arrives as three parts, a resin base, a hardener and a pre-weighed aggregate, that combine on site into a free-flowing mortar. Once cured, that mortar transfers load from the equipment baseplate into the concrete foundation across a fully filled, void-free bed, which is exactly what keeps rotating and reciprocating machines running true over the long term.
What sets an epoxy grout like this apart from a cementitious one is the binder. Instead of relying on the hydration of cement, ShaliGrout EP 10 cures through a chemical reaction between resin and hardener, giving it far higher bearing strength, effectively zero shrinkage and low creep under sustained load. It meets ASTM C 307 (Type I, Grade II, Class A) and the thermal-compatibility-with-concrete requirement of ASTM C 884, and it is supplied in a single 16 kg pack for controlled, whole-unit mixing. For Indian contractors handling turbine halls, rolling mills and compressor houses, it is the grout you reach for when alignment tolerances and downtime both matter.
The technical insight
The performance comes from the way the three components work together. The resin-hardener system forms a rigid, chemically crosslinked matrix, while the graded aggregate acts as a load-bearing skeleton that both stiffens the grout and controls the exotherm in thick pours. Because the cured resin does not depend on water for strength gain, there is no drying shrinkage to open a gap between grout and steel; the bed stays in intimate, full-area contact with the baseplate. That full contact is what lets vibratory energy dissipate into the foundation instead of loosening bolts or fatiguing the interface. The material reports negligible linear shrinkage, bond to concrete that exceeds the tensile and shear strength of the concrete itself, and impact and abrasion resistance greater than cementitious grout, so the weakest link in a properly prepared installation is the parent concrete, not the grout line. The trade-off is thermal: epoxy has a higher coefficient of expansion than concrete, which is why ASTM C 884 compatibility and correct lift thickness matter, and why the 25-150 mm per-lift window exists.
Where it is used
- Grouting turbine, generator and alternator baseplates in power plants
- Seating pump, compressor and fan bases subject to continuous vibration
- Deep-fill machine bases and pockets in a single or staged pour
- Rolling mill, press and heavy forging equipment foundations
- Anchoring large hold-down bolts and filling keyways or block-outs
- High-strength crane-rail beds and rail-fixing installations
- Quick re-grouts and machine start-ups where fast return to service is needed
- Precision alignment grouting for tanks, housings and process skids
Key advantages
- High bearing strength, reaching around 1000 kg/cm2 (about 98 MPa) at 14 days
- Non-shrink with negligible linear shrinkage, so precision alignment is preserved
- Free-flow consistency fills voids fully under wide or congested baseplates
- Bond to concrete exceeds the tensile and shear strength of the concrete
- Fast setting and quick return to service, cutting plant downtime
- Resists most chemicals plus oils and fuels common on machine floors
- Low creep and dimensional stability even in deep or thick sections
- No special curing procedures required after placement
Limitations & considerations
- Flow and working time are temperature-sensitive; cold slows flow, heat shortens pot life
- Gel time is only 45-60 minutes at 30 C, so batches must be placed promptly
- Placement is limited to 25 mm minimum and 150 mm maximum per lift in mass pours
- Demands thorough mechanical surface preparation (3 mm profile, 28-day-old concrete)
- Higher material cost than cementitious grout; best reserved for genuine dynamic-load duty
- Solvent (Xylene/Toluene) is needed for tool cleaning, requiring ventilation and handling care
Selection & best practice
Confirm the foundation concrete is at least 28 days old, sound and roughened to a minimum 3 mm profile that exposes coarse aggregate; vacuum or pressure-wash away all dust, oil and laitance, and use acid etching only where mechanical prep is impractical. Bring the grout, foundation and baseplate close to room temperature before you start, since cold badly reduces flow and heat cuts working time. Mix Comp B (hardener) into Comp A (resin), never the reverse, for two minutes with a slow-speed drill mixer, then add Comp C (aggregate) gradually until fully wetted out, mixing a further 2-3 minutes. Pour into a head box on one side and let the grout flow under the plate, using pre-placed straps to help it travel; keep each lift between 25 and 150 mm. Shutter with polythene-lined boards or a ShaliSlip coating to stop leakage, and plan the pour to beat the 45-60 minute gel time.
Specifications
| Composition | Three-component epoxy (resin + hardener + graded aggregate) |
| Compressive strength (50 mm cube) | 700 / 900 / 1000 kg/cm2 at 24 hrs / 7 days / 14 days |
| Flexural strength (7 days) | 280 kg/cm2 |
| Tensile strength (28 days) | 150 kg/cm2 |
| Consumption / yield | 1950 kg/m3 |
| Gel time at 30 C | 45-60 minutes |
| Linear shrinkage | Negligible |
| Standards | ASTM C 307 Type I Grade II Class A; ASTM C 884 thermal compatibility |
| Placement thickness | 25 mm minimum to 150 mm maximum per lift |
| Pack size | 16 kg pack |
| Shelf life | 9 months in original unopened, sealed packaging |
Industry use cases
Power Generation
Grouting turbine, generator and alternator baseplates where vibration and precise alignment demand a non-shrink, high-bearing epoxy bed.
Steel & Rolling Mills
Foundations for rolling mills, presses and heavy vibratory equipment that would loosen or fatigue a cementitious grout line.
Process & Chemical Plants
Seating compressors, pumps and fans on floors exposed to oils, fuels and spilled chemicals where chemical resistance is essential.
Material Handling & Ports
High-strength crane-rail beds and rail-fixing installations that carry concentrated dynamic and impact loads.
Heavy Manufacturing
Deep machine pockets, large anchor-bolt grouting and quick re-grouts where fast return to service minimises production downtime.
Frequently asked questions
Is ShaliGrout EP 10 the same as the old ShaliGrout EP P?
When should I choose an epoxy grout over a cementitious grout?
How thick can I pour it in a single lift?
How long is the working time?
What surface preparation does it need?
What pack size does it come in and how long does it store?
How we position STP ShaliGrout EP 10
ShaliGrout EP 10 is STP’s answer for dynamic-load, high-bearing machine grouting. Within the STP family, pair it with ShaliGrout EP 10 M and ShaliGrout EP 20 for higher-strength or thin/thick-section machine bases, or step down to a cementitious ShaliGrout non-shrink grout for static, economy-driven pockets. For epoxy tile and joint work, ShaliTile Grout E is the related STP option. If a specifier standardises on Fosroc, the closest counterpart is the Conbextra epoxy grouting range. Across our other brands we also stock equivalent epoxy machine grouts from MC-Bauchemie and Sika, so we can match the grout to the load case, temperature and approved-vendor list on your project.
Fosroc Conbextra EP10 — Specifiers who standardise on Fosroc, or need a documented free-flow epoxy grout on a Fosroc-approved project, can substitute Conbextra EP10 for comparable high-strength machine-base grouting.
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