Planigrout 350

Mapei Planigrout 350 – Deep-Pour High-Strength Epoxy Grout

94.4kg three-component epoxy grout for deep-pour machinery foundations, structural anchoring and heavy-duty industrial grouting applications.

Mapei Planigrout 350 is a three-component, free-flowing, rapid-hardening epoxy grout specifically developed for deep-pour applications requiring high mechanical strength and resistance to dynamic loads and vibration.

Manufactured from epoxy resin, hardener and selected aggregates, Planigrout 350 provides excellent adhesion to concrete and steel, together with resistance to water, oil and chemical attack. Its highly fluid consistency allows it to flow into confined spaces beneath machinery bases, support plates and structural components.

Designed for applications requiring substantial grout depths, Planigrout 350 can be applied in layers from 100mm to 500mm thick. Its rapid-hardening properties help reduce downtime when installing or repairing heavy industrial machinery and equipment.

Key Benefits

• Deep-pour epoxy grout: Designed for applications requiring grout thicknesses from 100mm to 500mm.
• High mechanical strength: Develops high compressive strength within a short period.
• Excellent flowability: Free-flowing consistency helps fill confined spaces beneath machinery and structural bases.
• Rapid hardening: Helps reduce downtime during industrial machinery installation and repair.
• Strong adhesion: Provides excellent adhesion to properly prepared concrete and steel.
• Chemical resistance: Resistant to water, oil and chemical attack.
• Vibration resistance: Suitable for structures subjected to dynamic mechanical loads.
• Low Dust technology: Reduces dust generated during mixing.
• Solvent-free formulation: Forms a free-flowing epoxy mortar after mixing.

Applications

Mapei Planigrout 350 is suitable for anchoring, repairing and grouting structures where substantial grout depths and high mechanical performance are required, including:

• Deep-pour industrial machinery foundations.
• Support bases for presses and compressors.
• Heavy industrial machinery and equipment foundations.
• Overhead crane and bridge crane rail installation and repairs.
• Structural tie-rods, bolts and metal rod anchoring.
• Levelling bearing elements supporting floor beams.
• Grouting structural components exposed to vibration.
• Industrial installations exposed to aggressive chemicals.

Technical Information

• Manufacturer: Mapei.
• Product: Planigrout 350.
• Product type: Three-component epoxy grout.
• Consistency: Free-flowing mortar.
• Colour: Dark grey when mixed.
• Component A: 7kg epoxy resin.
• Component B: 3.4kg hardener.
• Component C: 84kg selected aggregate (4 x 21kg bags).
• Total kit weight: 94.4kg.
• Mixing ratio: A : B : C = 7 : 3.4 : 84 by weight.
• Maximum aggregate size: 6mm.
• Application thickness: 100–500mm.
• Application temperature: +10°C to +35°C.
• Working time: Approximately 45 minutes at +23°C.
• Setting time: Approximately 4 hours.
• Complete hardening: 7 days.
• Density of mixed product: Approximately 2.38kg/litre.
• Consumption: Approximately 2.38kg per litre of cavity to be filled.
• Maximum service temperature: +60°C.
• Storage life: 24 months in original unopened packaging.

Mixing Instructions

Planigrout 350 is supplied as a complete three-component kit. The components must be mixed in the specified proportions to achieve the correct performance.

1. Mix components A and B: Pour all of component B into component A and mix using a low-speed drill with a suitable mixing attachment until uniform. Avoid entraining air.
2. Prepare component C: Place a small amount of the aggregate from component C into a suitable low-speed mortar mixer.
3. Add the resin mixture: Gradually add the mixed components A and B to the aggregate while mixing.
4. Add the remaining aggregate: Add the rest of component C and continue mixing.
5. Complete mixing: Mix for approximately 3–4 minutes until a uniform, lump-free consistency is achieved.
6. Apply immediately: The mixed grout should be poured as soon as possible because the chemical reaction generates heat.

All components are supplied in pre-dosed quantities. Do not use partial quantities unless they are accurately weighed using suitable high-precision electronic scales and the manufacturer's specified mixing ratio is maintained.

Application Guidance

Substrate Preparation

Concrete substrates must be sound, clean and dry. Remove loose material, efflorescence, oil, cement laitance, form-release compounds and dust before application.

For steel surfaces, remove dust, loose material, paint, grease and oil. Mapei recommends abrasive blasting to a bare metal finish where appropriate.

Concrete structures cast in situ must be allowed to cure for at least four weeks before applying Planigrout 350.

Pouring and Application

Apply Planigrout 350 by pouring it in a continuous flow into tightly sealed formwork, from one side to allow the grout to fill the space evenly and minimise trapped air.

For large or difficult-to-access areas beneath machinery foundations and support beds, provide suitable air escape routes and sufficient grout head pressure. A suitable mortar pump may also be used where required.

Important Application Limitations

• Do not apply to wet, dirty or crumbling surfaces.
• Do not apply below +10°C or above +35°C.
• Do not use in layers thinner than 100mm or thicker than 500mm.
• Do not use to seal elastic joints or joints subject to movement.
• Do not use for second pours between hardened and fresh concrete.
• Do not thin with water or solvents.
• Do not leave mixed resin components unattended in the container because the chemical reaction generates considerable heat.
• Protect unopened packs from direct sunlight before use.
• Apply immediately after mixing and complete the application within the available working time.

Frequently Asked Questions

What is Mapei Planigrout 350 used for?

Planigrout 350 is a deep-pour epoxy grout used for machinery foundations, structural anchoring, crane rails and heavy industrial grouting applications requiring substantial grout depths.

How thick can Planigrout 350 be applied?

The manufacturer specifies an application thickness between 100mm and 500mm.

How much does one kit weigh?

One complete kit weighs 94.4kg, comprising 7kg of component A, 3.4kg of component B and 84kg of component C.

What is the coverage of Planigrout 350?

Consumption is approximately 2.38kg per litre of cavity to be filled. Actual quantities depend on the volume and dimensions of the area being grouted.

How long does Planigrout 350 take to harden?

At +23°C, the working time is approximately 45 minutes, the setting time is around 4 hours and complete hardening takes approximately 7 days.

What is the difference between Planigrout 310 and Planigrout 350?

Both are three-component epoxy grouts, but they are designed for different application thicknesses. Planigrout 310 is intended for layers from 25mm to 100mm, whereas Planigrout 350 is designed for deeper applications from 100mm to 500mm.

Is Planigrout 350 suitable for machinery exposed to vibration?

Yes. It is designed for anchoring and grouting structures exposed to dynamic loads and vibration, including heavy industrial machinery and crane rails.

What is the mixing ratio?

The specified mixing ratio by weight is 7 parts component A, 3.4 parts component B and 84 parts component C. The complete pre-dosed kit should be mixed according to the manufacturer's instructions.

Buy Mapei Planigrout 350 from Clever Shield

Clever Shield supplies Mapei industrial repair, anchoring and grouting products throughout the UK. Planigrout 350 is designed for demanding deep-pour machinery foundation, structural anchoring and industrial grouting applications.

Contact our team for product availability, pricing and technical information.

Technical Downloads

Clever Shield supplies products and manufacturer documentation but does not undertake structural design or specification. Always consult the manufacturer's latest technical and safety documentation and ensure the product is suitable for the intended application.