Project information
| Project: | Port of Cartagena |
| Location: | Cartagena, Spain |
| Application: | Ports & Terminals |
| Year of completion: | 2026 |
| Duration: | 05/2025 - 03/2026 |
| Delivery period: | 05/2025 - 12/2025 |
| Concrete: | C40/50 (HA-40/P/20/IIIa+Qb+E) |
| Total volume of concrete: | 6,000 m³ |
| Fibre type: | DE 60/0.9 N |
| Fibre dosage: | 30 kg/m³ |
| CO₂ savings: | 450 t CO₂¹ |
¹ KrampeHarex GWP 257 kg CO₂-Eq. compared to steel fibres from other manufacturers with a GWP of 615-2,980 kg CO₂-Eq.
CO₂ savings:
450 t
KrampeHarex GWP 257 kg CO₂-Eq. compared to steel fibers from other manufacturers with a GWP of 615-2,980 kg CO₂-Eq.
This corresponds to approximately 2,411 car trips from Cartagena to Barcelona.
In modern port construction, traditional reinforcement methods are being replaced by high-performance steel fibre reinforced concrete (SFRC) to meet the extreme demands of global logistics.
Our solutions are specifically designed for the structural upgrade and renewal of port pavements, ensuring long-term functionality even under deteriorating conditions caused by continuous heavy usage. These include material stockpiling areas, high-load operational zones and heavy traffic hubs.
SFRC for heavy‑duty port pavements
Key performance metrics (according to ROM 4.1‑18)
To guarantee structural integrity, our port solutions adhere to the following technical specifications:
• Design load capacity: Up to 25 t/m² for heavy-duty operational and storage pavements.
• Concrete grade: High-strength HA-40 (C40/50) concrete.
• Fibre dosage: Typically 35 kg/m³ for maximum performance in high-stress environments.
• Tensile strength: High-performance fibers with a nominal tensile strength of 1,150 N/mm².
• Pavement thickness: Optimized structural design with a thickness of 250 mm supporting extreme loads.
• Foundation stability: Support on subbases with compressibility values (Ev2) ranging between 180 and 229 MPa.
“From the very first contact with BIU through to project completion, the cooperation with KrampeHarex and its local partner proved to be a real added value for us as general contractor."
González Soto
General Contractor
Port of Cartagena project
The upgrade of the access infrastructure to the Dársena de Escombreras is a key component in the ongoing expansion of one of the Mediterranean’s most strategically important industrial and logistics hubs. With around 90% of the operational area already in use, the Port Authority is responding to strong demand and preparing for continued economic growth in the Region of Murcia.
At the same time, the port is pursuing a long‑term sustainability strategy. New concessions and investments are assessed not only on operational performance, but also on environmental impact, energy efficiency and overall sustainability criteria. This positions Cartagena as a modern port that seeks to balance industrial development with responsible resource management.
Infrastructure improvements directly contribute to this strategy. The expansion and optimization of the critical access road CT‑34 supports smoother traffic flow, reduces congestion and lowers emissions, strengthening logistical resilience and safety in the Escombreras basin. In parallel, the port is investing in modern wastewater and sanitation systems to reduce leakage risks and ensure compliant, environmentally sound wastewater management across the industrial zone.
The reinforcement is ensured with DE 60/0.90 N from KrampeHarex. This cold-drawn wire fibre has a length of 60 mm, a diameter of 0.90 mm and a tensile strength of 1,150 N/mm². It provides optimal reinforcement for the heavy duty pavements while increasing durability and service life.
But above all, this fibre sets new benchmarks in environmental protection. Even the raw material is made from recycled steel before it finds its way by water and rail from European sources to our production facilities in Germany. There, the wire is drawn, cut and provided with the typical hooked end using 100% green electricity and specially generated PV power from our roofs.
The ecological footprint of the fibre is therefore so small that it is without equal on the market. This responsibility towards the environment is firmly established in our DNA. And has been since 1982.
Further references from
the ports & terminals sector
The KrampeHarexPlus difference
Our way of de‑risking change
To ensure a smooth and technically reliable execution, the project was supported by KrampeHarexPlus. Engineering was carried out by SCE, the consulting engineer responsible for the design according to the DAfStb guideline for steel fibre reinforced concrete.
The KH300 fibre dosing unit was provided for the entire project, enabling direct fibre addition into the truck mixer despite the constraints at the concrete plant. Our BIU team supported the commissioning of the KH300 on site and supervised the trial pour, ensuring a stable and efficient implementation.
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Michael von Schroetter
Sales Fibres International
