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RLA Penatech HS Grout: A Technical Overview
RLA Penatech HS Grout is a precision-engineered, non-shrink Class C cementitious grout designed for demanding structural and dynamic load applications. It features dual expansion for shrinkage compensation in both plastic and hardened states, making it ideal for base plate grouting, anchor bolt installation, and core hole infills. The product complies with ASTM C1107-91 and CRDC 621-82 standards, offering exceptional flowability, high early and ultimate strengths, and excellent thermal and impact resistance.
Core Features & Specifications
- High early and ultimate compressive strength (85MPa at 28 days).
- Dual expansion system eliminates shrinkage in plastic and hardened states.
- Excellent flow characteristics with fluid consistency up to 4m.
- Non-metallic formulation prevents staining on exposed surfaces.
- Can be applied from 10mm to 150mm thickness in a single pour.
- Meets ASTM C1107-91 and CRDC 621-82A compliance requirements.
The RLA Penatech HS Grout Advantage
- Eliminates voids and shrinkage cracks—ensures lasting performance under heavy loads.
- Simple mixing with water only—no complex additives or batching required.
- Versatile for fluid, plastic, or dry pack consistencies with accurate yield control.
- Reliable strength even in challenging temperatures (5°C to 30°C).
- Fast application using gravity pour or positive displacement pump.
Proactive Troubleshooting
Scenario: Applying in hot weather above 30°C
Potential Outcome: Rapid setting and reduced working time may lead to incomplete void filling or cracks.
Adheseal Best Practice: Store grout in cool conditions and use chilled water. Apply early morning or evening and shield from direct sun.
Scenario: Adding too much water during mixing
Potential Outcome: Grout may segregate, bleed, and result in reduced strength and bonding.
Adheseal Best Practice: Use only specified water amounts (3.5–4.0L for flowable per 20kg). Never hand mix or adjust consistency on site.
Applications in Practice: Trade Scenarios
For Builders (On-Site Installer): Base Plate Grouting
The Professional's Challenge
Achieving consistent fill under critical load-bearing base plates with no voids or shrinkage, especially on tight timelines.
The Adheseal Solution
Mix RLA Penatech HS to a flowable 3.5–4.0L/20kg consistency. Use header box method for smooth pour with a 100mm head height. Provides excellent early strength (>25MPa in 1 day).
Best Practice Note
Presoak all substrates for 4 hours and ensure bleed holes are placed in formwork to avoid pressure build-up.
For Precast Installers (Remedial Specialist): Core Hole Filling
The Professional's Challenge
Achieving void-free filling in tight cavities and ensuring long-term structural strength for load transfer.
The Adheseal Solution
Use flowable mix and pump from the bottom to avoid air entrapment. RLA Penatech HS provides expansion for complete void fill and sets within 2.5–4 hours depending on temperature.
Best Practice Note
Always remove free water after pre-soaking. Maintain consistent mix time (3–5 min) with spiral paddle or forced-action mixer.
Frequently Asked Questions
What is the correct water mix ratio for RLA Penatech HS Grout?
For flowable consistency, mix 3.5–4.0 litres of clean water per 20kg bag. For trowellable applications, use 2.8–3.2 litres. Do not exceed recommended water volume to prevent segregation and bleed.
Can I mix RLA Penatech HS Grout by hand?
No, hand mixing is not recommended. Use a high shear mixer or electric drill with spiral paddle at 500–600 rpm for a consistent, homogeneous blend. Proper mixing is critical for performance and flow.
How thick can I apply RLA Penatech HS Grout?
RLA Penatech HS Grout can be applied from 10mm up to 150mm thick in a single pour. Always ensure proper formwork and grout head is maintained to avoid air entrapment and ensure full coverage.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Machine base plates & heavy machinery foundations | High strength, shrinkage compensated, resists vibration | Engineers, Builders, Industrial Contractors |
| Crane rail sole plates & bridge bearings | Dynamic load resistance, high ultimate strength | Structural Contractors, Infrastructure Specialists |
| Anchor bolts, cavities, core holes | Non-shrink, excellent adhesion, void-free filling | Builders, Remedial Contractors |
| Precast sections & panel connections | Precision placement, flowable/pumpable consistency | Precast Installers, Concreters |
Applying RLA Penatech HS Grout: Enhanced Protocols & Best Practices
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Surface Preparation
Clean all substrates of contaminants. Presoak for 4 hours and remove all standing water prior to application.
Method 1 Title
Water saturation followed by air drying surface to saturated-surface-dry (SSD) condition before grout placement.
Timing: Pre-soak 4 hours before application; ensure no ponding water at placement.Pro Tip: Ensure bolt holes and recesses are completely free of standing water to prevent bond failure.
Limitations & Safety
Product Limitations
Do not mix by hand. Use mechanical mixing only with high shear or forced-action mixer.
Avoid application below 5°C or above 30°C without proper conditioning and timing adjustments.
Safety & Handling Requirements
Personal Protective Equipment
Wear safety goggles, chemical-resistant gloves, and long sleeves when handling or mixing. Avoid contact with skin or eyes.
Ventilation Requirements
Use in well-ventilated areas. Avoid confined spaces without adequate airflow during mixing and placement.
Fire & Handling Precautions
Non-flammable. Handle bags carefully to avoid breakage. Clean spills immediately with water before setting.
Emergency First Aid
Eyes:
Flush thoroughly with water for 15 minutes. Seek medical attention if irritation persists.
Skin:
Wash with soap and water. Remove contaminated clothing.
Inhaled:
Move to fresh air. Seek medical help if symptoms continue.
Swallowed:
Do NOT induce vomiting. Rinse mouth and seek immediate medical attention.
Seek medical attention immediately in all cases of serious exposure.
RLA Penatech HS Grout Application Guide
Concrete
Surface Preparation
Ensure substrate is sound, clean, and free from oil, dust, curing agents, and contaminants. Presoak the surface for at least 4 hours prior to grouting and remove any standing water before application.
Primer Requirements
No primer typically required
Pre-wetting the surface is sufficient. Avoid applying grout to dry porous concrete without presoaking.
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