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Harbour subsidence

The fast & non-disruptive solution to seawall, port and harbour subsidence

Substantial traffic and heavy loads put a huge strain on infrastructure at busy port terminals. This can cause significant ground subsidence and damage to concrete foundations. The infrastructure is much more likely to deteriorate under pressure.

If left untreated, harbour subsidence can pose safety risks and interfere with the smooth running of operations.

Mainmark has been providing level correction, ground improvement and void filing solutions to port terminals for more than 30 years.

We understand the importance of working within tight timeframes of scheduled shutdowns or emergency works, working collaboratively and efficiently, with minimal interruption to the terminal operations, while placing safety above all else.

Applications of Mainmark harbour subsidence treatment



Buildings & structures

Keeping the UK’s port terminals operating efficiently and safely and treating harbour subsidence with modern technologies

Slab lifting process for port infrastructure affected by harbour subsidence

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 level correction methods for port and seawall infrastructure affected by harbour subsidence

Fast & Clean

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

Immediately Trafficable

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


Repairs are performed without the need for excavation or extensive disruption to the treated area and operations of the harbour.


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

Case studies

Featured port, seawall and harbour subsidence case studies

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Mainmark Ground Engineering (UK) Ltd.

CRN: 09372443

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