When critical installations demand uncompromising stability, structural elements are subject to dynamic loads, or anchoring precision is paramount, securing these components correctly is essential. RLA Penatech HS Grout delivers that confidence. This high-strength, non-shrink grout ensures critical machinery, bridge bearings, and structural anchors remain precisely in place, performing reliably under the most demanding conditions.

Why this product exists

RLA Penatech HS Grout is engineered for precision structural grouting and critical load transfer. It addresses the challenge of securing heavy machinery, structural elements, and anchor bolts where ordinary grouts risk shrinkage, movement, or premature failure. This Class C grout features non-shrink dual expansion, compensating for volume changes in both its plastic and hardened states. This prevents structural movement, equipment misalignment, and ensures full load transfer, even in applications subject to continuous vibration and dynamic forces.

The numbers that matter

• Dual Expansion, 0% Bleed: RLA Penatech HS Grout compensates for shrinkage in both plastic and hardened states and exhibits zero bleed. This ensures a void-free, 100% contact area beneath base plates and around anchor bolts, critical for precise alignment and full load transfer without future settlement.
• Compressive Strength: Achieving over 85 MPa at 28 days for trowellable consistency, this grout delivers the high ultimate strength required for machine base plates, bridge bearings, and structural columns. It withstands continuous dynamic loads and heavy static forces without degradation.
• Flexural Strength: With over 9.5 MPa at 28 days, the grout maintains structural integrity even when subjected to bending forces, crucial for applications like crane rail sole plates or pre-cast panel connections.
• Bond Strength: Demonstrating over 10 MPa in bond strength (flowable consistency at 28 days), this product ensures anchors and structural components are securely locked into the substrate, resisting shear and pull-out forces.
• Application Range: Engineered for applications from 10mm up to 150mm in a single pour, it provides versatility for various grouting depths from anchor bolt encapsulation to larger base plate installations.

What it's like to use

RLA Penatech HS Grout requires mechanical mixing only; hand mixing is not recommended. Precise water ratios are critical for achieving the desired consistency, from dry-pack to flowable, without compromising performance. Substrates must be clean, sound, and pre-soaked for at least 4 hours, with all standing water removed before placement. Watertight formwork is essential, coated with a release agent and designed to maintain a continuous grout head during placement. The grout can be placed by gravity flow using a header box or by large-volume pumping, ensuring continuous flow from one side or from the bottom up to prevent air entrapment. All exposed grout requires proper curing with plastic sheeting, wet hessian, or liquid curing compounds to maximise strength development.

Where this product excels

• Machine Base Plates & Dynamic Load Applications: Ideal for precision grouting under heavy machinery and equipment subject to continuous vibration, ensuring long-term stability and alignment.
• Bridge Bearings & Crane Rail Sole Plates: Provides high-performance structural grouting that resists dynamic loads and maintains integrity in critical infrastructure applications.
• Anchor Bolt Fillings & Balustrade Anchoring: Secures anchor bolts, balustrade posts, and other fixtures into concrete core holes or cavities, even in membrane-covered or tiled areas, where a robust, non-shrink connection is vital.
• Pre-cast Concrete Sections/Panels: Ensures void-free connections between pre-cast elements, facilitating load transfer and structural continuity.

How it fits in a real system

RLA Penatech HS Grout frequently serves as the critical first step in structural anchoring systems, particularly for balustrades. In applications like balustrade anchoring within concrete (including membrane-covered or tiled concrete areas), it forms the foundational bond. After preparing the substrate and formwork, this grout is poured into the anchor points to securely encapsulate balustrade posts or anchor bolts, creating a high-strength, void-free connection to the concrete slab before subsequent finishing layers or waterproofing systems are applied.

Choose this when

• When high early and ultimate compressive strength is required for critical load transfer applications.
• When precision grouting is essential for elements under dynamic loads, such as machine base plates or crane rails.
• When you need to anchor structural components or balustrade posts from 10mm up to 150mm in depth.
• When a non-shrink, dual-expanding grout is necessary to prevent settlement and ensure full contact.

Don't use this when

• Not for: General concrete repair mortar or lightweight filler applications. Refer to products like RLA Penapatch HB50 Concrete Repair for crack repair or RLA Penapatch Panel LW Concrete Repair for lightweight filling.
• Not for: Applications expecting the grout itself to provide waterproofing; it is a structural grout.
• Not for: Hand mixing. Mechanical mixing is mandatory to achieve optimal consistency and performance.
• Avoid: Applying in temperatures below 10°C or above 30°C without pre-conditioning materials or taking specific temperature management precautions, as this can affect setting time and strength development.

Related products

• RLA UW Penaflow Grout