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SURYA ENGINEERING
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Floor using Armour Joint

Floor using Armour Joint Specification

Max. Temperature
85 Celsius (oC)

Surface Treatment
Polish

Usage
Industrial

Material

Technique
Casting

Size
Customized

Type
Bushing

Shape
Other

Product Type
Anti-Corrosion

Weight
10 Kilograms (kg)

Color
Silver

Length
100 Millimeter (mm)

Width
50 Millimeter (mm)

Floor using Armour Joint Trade Information

Minimum Order Quantity
100 Pieces

Delivery Time
24 Hours

About Floor using Armour Joint

What is an Armour Joint?

An Armour Joint (also known as an armoured joint or expansion joint system) is a high-strength, prefabricated steel formwork system installed at the joints of concrete floor slabs.

Its primary purpose is to protect the vulnerable edges (arrises) of concrete slabs from damage caused by heavy traffic, such as forklifts, and to provide an efficient load transfer mechanism between adjacent slabs.

An Armour Joint is a steel edge protection system that reinforces the joint and ensures perfect slab alignment, guaranteeing a smooth, long-lasting industrial floor.

Why Use Armour Joints?

The concrete joints in large industrial floors are a primary point of failure. Traditional unarmored joints are susceptible to a range of problems, including cracking, chipping (spalling), misalignment, and the creation of dangerous trip hazards, all of which lead to costly repairs and operational downtime. Armour Joints are specifically designed to overcome these challenges by providing a robust, engineered solution.

Classification: Types of Armour Joints

Armour Joint systems are classified based on their functional design to suit different structural requirements.

Type of Armour Joint	Primary Function
Construction Joint	Used to connect two sections of concrete cast at different times, ensuring a smooth transition and structural integrity.
Movement/Expansion Joint	Accommodates the expansion and contraction of concrete slabs due to temperature changes and shrinkage, preventing stress buildup and cracking.
Control Joint	Installed to create a weak plane, allowing controlled cracking at a predetermined location, and the armour protects this intentional weak spot.

Applications: Where Are They Used?

Steel Armour Joints are essential in modern infrastructure and are deployed across a wide spectrum of projects where large floor areas and heavy loads are the norm.

Industrial Warehouses & Logistics Parks

E-Commerce Fulfillment Centers

Manufacturing Plants & Automotive Factories

Cold Storage & Freezer Facilities

Airport Cargo Terminals & Aprons

Areas with Heavy Forklift & AGV Traffic

Armour Joint Technical Specifications

The following technical specifications are a benchmark for high-quality Armour Joint systems, which Surya Engineering can manufacture and supply.

Parameter	Specification
Steel Grade	High-strength structural steel (e.g., S235JR / S355)
Armour Profile	Typically 10mm thick x 40mm to 80mm deep, cold-drawn steel sections
Finish	Black steel (standard), Hot-Dip Galvanized (HDG), or Stainless Steel
Joint Opening	Designed for up to 20mm, with options for up to 30mm or more
Load Transfer	High-strength diamond or square dowel plates within plastic sleeves for two-way movement
Slab Depth Range	Suitable for slab thicknesses from 100mm to 300mm
Standards	Compliant with TR34 4th Edition guidelines

Selection : Joint Width by Slab Thickness

For an Armour Joint to function correctly, the steel width must be precisely matched to the slab thickness. Use this guide to specify the correct joint width:

Slab Thickness (mm)	Recommended Armour Joint Width (mm)
150 mm	130 mm
200 mm	170 mm
240 mm	210 mm
300 mm	270 mm

Installation: Step-by-Step Process

Proper installation is crucial for the performance and longevity of an Armour Joint.

Step 1: Pre-Pour Layout
The exact joint locations are mapped out based on the slab design drawings and the intended traffic flow.

Step 2: Positioning & Anchoring
The pre-assembled Armour Joint sections are placed and aligned. They are secured to the subbase using pins or stakes driven through pre-drilled holes in the base plate.

Step 3: Concrete Pour
Concrete is poured on one side of the joint first. Internal vibration is used to consolidate the concrete around the steel components, ensuring no voids are left.

Step 4: Formwork Removal & Finishing
Once the concrete has cured sufficiently, the temporary stakes are removed. The surface is finished flush with the top of the steel armour to create a seamless surface.

Step 5: Setting the Dowel Sleeves
Before pouring the adjacent bay, plastic sleeves are placed over the protruding dowel plates on the installed side. This de-bonds the dowel from the second pour, allowing for expansion and contraction.

Step 6: Pouring the Adjacent Slab
The second slab is poured against the first, with the steel armour and sleeved dowels now embedded between the two sections.

Advantages of Steel Armour Joints

Using a steel Armour Joint system provides significant and quantifiable advantages over traditional unarmored joints.

Avantaj	Aklama
Full Edge Protection	Eliminates spalling and cracking at the joint line, the most common point of failure in industrial floors.
Superior Load Transfer	Diamond dowel plate system ensures effective distribution of heavy loads across the joint, preventing vertical displacement (lipping).
Enhanced Rideability	Creates a smooth, continuous surface for forklifts and AGVs, reducing tire wear, product damage, and operator fatigue.
Reduced Maintenance Costs	A durable floor requires fewer repairs, leading to significant long-term cost savings and eliminating unplanned downtime.
Faster & More Accurate Installation	Prefabricated design speeds up installation, ensures perfect alignment, and reduces on-site labor compared to traditional formwork.

TR34 Standard Used in India for Armour Joint?

TR34 standard is widely used in India, especially in industrial flooring, warehouses, logistics parks, factories, airports, and large commercial projects where Armour Joints are installed.

Although TR34 is a UK standard/guideline, many Indian EPC contractors, flooring consultants, and MNC projects adopt it because India does not have a dedicated Indian Standard specifically for industrial floor armour joints.

Where TR34 is Used in India?

TR34-based armour joint specifications are commonly used in:

Large warehouses
E-commerce fulfillment centers
Industrial factories
Logistics parks
Automobile plants
Cold storage facilities
Airport cargo terminals
Heavy forklift traffic areas
Manufacturing industries

Related Testing Standards you can find out more on Surya Engineering

website:- suryaengineering net

About Surya Engineering

Surya Engineering is a trusted engineering solutions provider specializing in industrial machinery, construction equipment, dust control systems, and fabrication machinery. The company focuses on delivering high-performance and durable industrial equipment designed for modern construction and manufacturing industries.