Rail technology


Thermite welding is a technique in which rails with a temperature of more than 2500 degrees are welded together without joints. This is done by means of a bucket containing thermite, a mixture of iron and aluminum powder. The igniter enters the bucket and starts a chemical reaction that connects the rails. Thermal welding is used for welding all types and qualities of rails, including groove rails and crane rails.

The advantage of thermal welding is that the process is standardized and the welder can work efficiently compared to conventional welding techniques. "The advantage of the Pandrol welding packages is that welding is done quickly and in an environmentally friendly way," explains director Mark van den Rijen.

The first system is in a steel bucket which can be fitted with a special filter lid. Van den Rijen: “The thermite is burned in the bucket, creating a lot of smoke. Thanks to the filter, this smoke is trapped and absorbed, making it safer to work. This is better for the health of welders and their colleagues in the track, but also offers benefits when performing work in tunnels, for example. "

Because the sand mold is placed in the bucket in an innovative way, the residue is loose in the bucket after welding, making it easy to separate and the steel bucket can simply reach the old iron. He points out that such seemingly small differences save a lot of time and help to ensure that not too much material is thrown into the residual waste, which is bad for the environment. ”

The second thermal welding system that is being demonstrated is in a cardboard bucket. “The advantage of this system is that almost all material, including the bucket, burns. As a result, you have almost no residual material to remove, which can save a lot of time. Because the bucket is made of cardboard, the system is also even cheaper than systems with an iron bucket. "

Automated process

“Thermite welding is a standardized process, making it less susceptible to error and thus better safeguarding the quality of the weld.  Alom wants to take a new step towards with these products to a safer and more sustainable rail market. ”


Certified geotextiles for the railway

Geofrabics Ltd. and Alom have been working together for years and last month three product certificates were issued for Geofabrics products that Alom applies to the Dutch market.


ProRail 'experimental garden' with FFU sleepers.

ProRail set up a testing ground in the track between Zwolle and Heino with four different types of alternative, sustainable sleepers. This is a two-year trial in which the applicability of the sleepers is tested and the degree of noise and vibration reduction is also examined.


Pandrol drives greater weld traceability in rail sector.

Pandrol, the market leading manufacturer of aluminothermic welding systems, has released an innovative new app which is specifically designed to improve weld traceability across the rail sector. The app is also available for the Netherlands.


Innovative Rail Crossing Systems

• Independent of sleeper spacing • Precise and secure • Cost effective • Rodded for extra strength • Quick & easy to install • No special tools required


Tracktex, An effective, economical, easy-to-install replacement

‘Tracktex’ is a micro-porous filter sandwiched between two geotextile protectors which, when deployed at the base of ballast, prevents rain water penetrating through to the underlying formation but allows upward movement of water whilst filtering any fine soil particles.


New type anti- trespass panel certified by ProRail

Specifically designed to deter and delay access to prohibited areas, Rosehill Anti-Trespass panels are a proven physical and visual deterrent. This type of anti-trespass panel has been approved by ProRail spc 000287 version 2.



Haags Startstation Erasmuslijn (HSE).

To have more space at the track, the E-Line has a new end stop named HSE ( The Hague start station Erasmus line) The HSE is the new metro stop which connects Rotterdam and The Hague.


Alom's Concrete sleeper NS90

Alom's concrete sleeper NS90 has been tested and approved by ProRail SPC00021.


Synthetic Railway Sleepers: Light, durable en strong

Alom offers , along with Sekisui, a Synthetic Railway Sleepers. These synthetic sleepers are produced by compressing single strands of glass fibre with polyurethane foam using a high pressure extraction press. The expected lifetime is more than 50 years.