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Attention: This product is special order only, delivery of product can take an estimated 1 week or more. Please contact us directly for more information.
Use Penatech GP Grout for: High-performance grouting under machine base plates, crane rails, anchor bolts, and bridge bearings.
Penatech GP Grout is a high-performance, precision Class C cementitious grout formulated for demanding structural applications. Designed with dual-phase expansion, it ensures zero shrinkage in both plastic and hardened states. This non-metallic, chloride-free grout provides superior flow and retention, making it ideal for use under base plates, crane rails, anchor bolts, and precast panels. With excellent impact and thermal resistance, Penatech GP Grout is trusted for both dry pack and flowable installations across commercial and industrial sites.
Key Features of Penatech GP Grout
- High early and ultimate compressive strength exceeding 80 MPa
- Exceptional flow characteristics with zero bleeding or segregation
- Dual expansion system compensates for shrinkage in plastic and hardened states
- Non-metallic formulation eliminates staining risks on substrates
- Tested to ASTM C1107-91 and CRDC-621-82 specifications
- Can be dry packed, trowelled, or poured for flexible application
Technical Overview
- Chemical Properties: Cement-based, chloride-free, non-metallic
- Application Temperature Range: 5°C to 30°C (41°F to 86°F)
- Compressive Strength: >80 MPa at 28 days
- Setting Time: 2–4 hours depending on consistency and temperature
- Flow Distance: >4.0 m with 250 mm grout head at 20°C
Trade Professional Information
- Required Tools: High-shear mixer, spiral mixing paddle, header box, displacement pump (for large volume)
- Trade-Specific Tips: Maintain a consistent grout head during pour to avoid air pockets
- Common Issues and Solutions: Avoid adding excess water to prevent segregation and reduced strength
Storage and Shelf Life
- Storage Requirements: Dry, low humidity environments in original sealed packaging
- Shelf Life Information: 9 months from production date
- Temperature Considerations: Store between 5°C and 25°C (41°F and 77°F)
Certifications
- ASTM C1107-91 Compliant
- CRDC 621-82A Compliant
- Tested to AS 1012.18 and AS2350-11 for strength and setting
Frequently Asked Questions About Penatech GP Grout
Q: How should Penatech GP Grout be applied under base plates?
A: For base plates, use a gravity-fed header box system. Ensure the formwork is watertight, maintain a consistent grout head, and pour from one side only to avoid air entrapment.
Q: How does Penatech GP Grout perform under high loads and vibration?
A: It offers high early and ultimate compressive strength with excellent durability, making it suitable for dynamic loads and vibration-prone applications like crane rails and machinery bases.
Q: Is Penatech GP Grout compatible with pre-cast concrete and steel substrates?
A: Yes, it bonds effectively with clean, saturated-surface-dry concrete and properly prepared steel. It’s commonly used in precast concrete and anchor bolt applications.
Q: What should I do if the grout begins to stiffen during application?
A: Do not add water to re-temper. Discard any grout that has stiffened. Always mix fresh batches and maintain continuous application to avoid cold joints.
Q: What safety measures are necessary during use?
A: Wear gloves, safety goggles, and protective clothing. Ensure adequate ventilation and avoid direct skin contact. Refer to the MSDS for full safety information.
Use Penatech GP Grout for:
- Grouting heavy machinery base plates in industrial plants
- Structural anchoring of bolts and steel columns
- Precast concrete panel placement and core hole filling
- Crane rail and bridge bearing pad installation
Why Use Penatech GP Grout:
- Exceptional strength ensures long-lasting structural support
- Non-shrink formulation prevents cracking and voids
- Outstanding flowability simplifies installation and reduces labour time
- Tested and compliant with industry standards for peace of mind
How to apply Penatech GP Grout:
- Clean substrate of dust, oil, or contaminants. Pre-soak concrete for 4 hours, removing excess water before grouting.
- Set up watertight formwork with venting holes. Coat with release oil if needed.
- Mix Penatech GP Grout with clean water using a high-shear mixer or paddle drill. Mix for 3–5 minutes to a smooth consistency.
- Pour or pump from one side using a grout head or header box to avoid air entrapment.
- Cure the exposed grout with plastic sheeting or curing compound immediately after placement.
Penatech GP Grout limitations:
- Do not mix by hand—mechanical mixing is required
- Do not add extra water beyond specified limits
- Unrestrained areas must be minimised to avoid cracking
- Not suitable for dry porous substrates—pre-soak thoroughly
Safety precautions when using Penatech GP Grout:
- Personal Protective Equipment: Gloves, goggles, long sleeves
- Ventilation: Use in well-ventilated areas to avoid inhalation
- Handling: Avoid skin and eye contact, wash hands after use
- Refer to MSDS for full safety procedures and emergency advice
Penatech GP Grout can be used on the following substrates:
- Concrete – must be clean, roughened, and pre-soaked
- Steel – must be free of oil, rust, and contaminants
- Precast concrete – ensure tight formwork and proper saturation
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