Heavy Duty Armour Joints System – Concrete Slab Floor Expansion Joint for Industrial Flooring
Heavy Duty Armour Joints System – Concrete Slab Floor Expansion Joint for Industrial Flooring
Product Overview
The Heavy Duty Armour Joints System is a prefabricated, leave-in-place concrete slab floor expansion joint specifically engineered for demanding industrial flooring environments. Designed to accommodate thermal expansion, contraction, and drying shrinkage of concrete slabs, this system provides superior arris protection, reliable load transfer, and long-term durability under continuous heavy traffic from forklifts, AGVs, and materials handling equipment.
Acting as permanent formwork during concrete placement, the system protects vulnerable slab edges from impact damage, chipping, and spalling – extending the service life of your industrial floor while minimising costly repairs and operational downtime.
International Standards & Compliance
Our Heavy Duty Armour Joints System is manufactured and tested in accordance with globally recognised standards to ensure quality, safety, and performance:
- TR34.4 British Industrial Flooring Association (BIFA) – designed and manufactured in accordance with TR34.4, the definitive UK guide for industrial concrete floor design and construction.
- ASTM D1751 ASTM D1751 – specification for preformed expansion joint fillers for concrete paving and structural construction.
- ASTM D1752 ASTM D1752 – specification for preformed sponge rubber and cork expansion joint fillers.
- EN 10025 EN 10025 – structural steel grades (S235JR, S355J2) used for joint components.
- ISO 9001 ISO 9001 – quality management system certified.
- CE CE Marking – compliant with European construction product regulations.
- ISO 14001 ISO 14001 – environmental management system certified.
Technical Specifications
Standard Dimensional Range (Select Models)
| Model | Joint Height h (mm) | Dowel Type | Dowel Centres (mm) | Length (mm) | Slab Thickness (mm) |
|---|---|---|---|---|---|
| AJS-60 | 60 | — | — | 2800 | 0 – 90 |
| AJS-80 | 80 | — | — | 2800 | 90 – 120 |
| AJS6-115 | 115 | ARJD6 (6mm) | 560 | 2800 | 135 – 150 |
| AJS6-160 | 160 | ARJD6 (6mm) | 560 | 2800 | 175 – 195 |
| AJS6-200 | 200 | ARJD6 (6mm) | 560 | 2800 | 215 – 240 |
| AJS6-250 | 250 | ARJD6 (6mm) | 560 | 2800 | 260 – 290 |
| AJS10-135 | 135 | ARJD10 (10mm) | 560 | 2800 | 150 – 175 |
| AJS10-180 | 180 | ARJD10 (10mm) | 560 | 2800 | 195 – 215 |
| AJS10-220 | 220 | ARJD10 (10mm) | 560 | 2800 | 240 – 260 |
| TJS6-160-3000 | 160 | TDR-6 | 500 | 3000 | 170 – 195 |
| TJS6-245-3000 | 245 | TDR-6 | 500 | 3000 | 260 – 300 |
Custom dimensions available upon request. All dimensions are nominal and subject to manufacturing tolerances.
Material Options
- Base Material: S235JR Cold Drawn Structural Steel
- Surface Finish: Black Mill Finish / Hot-Dip Galvanized Anti-Corrosion Treatment
- Anchor Stud: Nelson Type Weld Stud, compliant with EN ISO 4063 welding process
Custom height, length and load transfer plate specifications are available for special concrete slab floor engineering projects.
Key Features & Benefits
Applications
The Heavy Duty Armour Joints System is specifically designed for high-load, high-traffic industrial concrete floors, including:
- Warehouses & Distribution Centres – withstands continuous forklift and pallet truck traffic
- Manufacturing Plants & Production Facilities – resists impact from heavy machinery and automated equipment
- Logistics & Fulfilment Centres – supports AGV (automated guided vehicle) systems
- High-Bay Racking Floors – maintains flatness and levelness for narrow-aisle storage
- Waste Transfer Stations & Recycling Facilities – extra-heavy-duty protection for extreme operating conditions
- Retail Distribution & Bulk Storage – reliable performance under mixed vehicle types
- External Concrete Pavements – galvanised/stainless steel options for outdoor use
Armour Joint System Installation Guide for Concrete Slab Floor
Professional armour joint installation follows TR34 standard concrete slab floor construction steps:
- Layout joint lines according to floor design drawing, mark positioning lines on base subgrade
- Place full-length armour joint units on marked lines, adjust horizontal level and vertical straightness
- Fix anchor studs to base reinforcement mesh to prevent floating during concrete pouring
- Connect adjacent joint sections with sliding sleeve connectors to reserve thermal movement gap
- Pour concrete slab on one side of the armour joint, vibrate concrete fully around anchor studs
- After concrete initial curing, pour the second slab side, ensure flush joint surface finish
- Fill reserved expansion gap with flexible joint sealant after full slab curing
Quality Assurance & Testing
All systems undergo rigorous quality control in accordance with:
- ACI 301 – Specifications for structural concrete
- ACI 360 – Guide to Design of Slabs-on-Ground
- EN 10346 – Continuously hot-dip coated steel flat products
- ASTM D2240 – Shore A hardness testing for joint filler materials
Frequently Asked Questions About Concrete Slab Armour Joint System
Q1: What is the difference between armour joint and ordinary concrete expansion joint filler?
A: Plastic/foam joint fillers only fill gaps without load protection; armour joint system provides steel edge protection, load transfer and permanent formwork, specially designed for heavy forklift industrial concrete slab floors to avoid slab edge damage.
Q2: Which standard should I follow for warehouse armour joint design?
A: Global mainstream industrial floor design standard is TR34 4th Edition from The Concrete Society UK, combined with Eurocode BS EN 1992-1-1 for slab structural calculation.
Q3: Can armour joints be used for FM2 laser screed concrete slabs?
A: Yes, our full range of heavy duty armour joints are precision manufactured to meet FM2 and FM3 floor flatness tolerance requirements for high-precision logistics warehouses.
