Innovations in Floor Joint Systems by RCR-Permaban-Rocland

Innovations in Floor Joint Systems by RCR-Permaban-Rocland


RCR Brings to You Time Tested Alpha Joint in a New Avatar. AlphaJoint 4010 has been industry standards for more than 2 decades. It is a joint design pioneered by Permaban UK, a RCR group company. AlphaJoint is a leave-in-place, heavy duty Arris/Joint protection system for Industrial floors. Leave-in-place floor joint system comprises of 2.4 m long armoured section with lap joint at both ends, 4-way, 3-way section at intersections of joints.

Joint size is decided on floor thickness. For floor thickness of 200mm, joint size of 175-190mm can be selected. Lesser heights are to factor unevenness in base surface.

The challenge is to have stock of variable heights of armour joint and idle inventory of balance stock. Secondly lead time for sourcing joints of variable heights.

To overcome these challenges, RCR has introduced AlphaJoint Universal for slab thickness from 150-200mm. It has pre-set positions to which joints can be set and installed. More than 70% of grade slabs have thickness ranging from 150-200mm and single type of joint meets the demand of majority of floors.

Armoured joints are not merely fabricated sections as perceived. They are properly engineered with high end manufactu ring line.



Some of the key factors which differentiates an engineered joint like Alpha joint with local fabricated sections;

The stud design which is primarily based on concrete shrinkage stress, pull strength.

Frangible bolt design enabling opening of joint


And many more factors. These design and quality cannot be achieved by local manufacturing in fabrication shop. These type of armour joints creates 3 joints and stress in shear zone.

RCR brings Wave power to concrete floors         

A new armoured joint from RCR is harnessing the power of sine waves to ensure smooth transit for MHE.

Permaban Wave is named for its distinctive wave-shaped top plate. Its triple curve design allows vehicle wheels to run smoothly across the joint – not just at the central gap, but also across the edges of the plate.

When MHE directly crosses a traditional straight armoured joint the vehicle wheels momentarily drop into the joint gap, due to the parallel edges of the joint.  This can cause impact damage to vehicles and the floor, costing warehouse operators dearly in excessive maintenance and downtime.  However, impact cannot occur with a shaped joint.

With plate style joints, even those with a shaped joint arris, it is possible to inadvertently introduce two additional straight joints at the edges of the plate. These not only cause an impact risk but will also require maintenance during the floor’s lifetime. For this reason, Permaban Wave’s outer edges are also shaped, but to a different sine wave than the central arris. This ensures that there are no straight edges at all, and therefore gives an assurance of no impact and minimal maintenance.

Uniquely, the top plate on Permaban Wave is narrow, which gives distinct advantages to flooring contractors. Firstly, the joint can be set accurately with ease, as small variances in the level do not translate into significant differences across the width of the plate. Secondly, the width and shape help ensure good concrete distribution and compaction underneath the plate. Anchoring is assured with continuous concrete ties; and installers can also finish right up to the joint edge easily, thanks to Wave’s clean, flowing design.

The top plate is fixed to a newly-designed central ‘universal’ divider plate – another RCR innovation. This divider plate features pre-set positions, which can be selected on site, to easily accommodate varying slab depths. This allows installers to use the same product with different slab depths across multiple job sites, aiding cost efficiency.