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Keeping Railways on Track with Innovative Remediation Solutions

The fast, non-disruptive solution for rail track subsidence.

Mainmark has long been at the forefront of ground remediation solutions for rail across Australia and New Zealand. Our expertise lies in subsiding rail assets, including station platforms, bridge relieving slabs, rail crossings, and rail ballast. Mainmark’s cutting-edge technologies offer rapid, non-disruptive, and cost-effective methods to re-level rail infrastructure, strengthen subgrade soils, and address structural challenges.

Common applications include:

  • Filling voids beneath rail platforms and raising subsided sections to their original levels,
  • Bolstering rail ballast, restoring proper drainage and alignment, 
  • Ensuring railway safety, and 
  • Enhancing weak subgrade soils across railway networks and rail crossings.




Re-levelling New Zealand’s rail infrastructure with minimal disruption and delays

Slab lifting process for railway tracks

Small holes are drilled through the slab.

Multi-component strcutural resin is injected. It expands immediately, filling any voids and compacting the substrate.

After re-supporting the slab, continued injection raises it, guided by the laser level.

The treated pavement sections are returned to full operation immediately after the repair work, and no curing time is required.

Features & Benefits

Mainmark’s Solutions & Technologies

Fast & Clean

Our solutions have fast curing times and treated areas can be used immediately or without the delays compared to traditional repair methods.

Immediately Trafficable

As soon as the repair is completed, the area can be re-opened to traffic and full use.


Repairs are performed without the need for excavation or extensive disruption to the area.


Compared to traditional methods, our solutions are more cost-effective.

Get a quote

Arrange a site assessment in 3 simple steps:

Step 1

Submit your enquiry using our online form. Include a brief message about the type of foundation issues you are experiencing.

Step 2

Our friendly customer service team will be in touch to schedule a site assessment that suits you.

Step 3

One of the Mainmark experts will visit your asset, assess the damage, and ascertain the likely cause. They will establish the approach needed, creating a plan specific to the needs of the problem and provide you with a detailed quote.

© 2024 The Mainmark group of companies. ‘Mainmark®’, ‘Terefil®’, ‘Terefirm®’ and ‘Teretek®’ are trademarks of the Mainmark group of companies.

Mainmark Ground Engineering (NZ) Ltd





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