Heat Conducting Concrete Solutions
Discover our innovative Heat Conducting Concrete, a specialised solution designed to enhance the thermal performance of infrastructure projects. This innovative concrete conducts heat efficiently, making it ideal for applications such as ground source heating, district heating systems, and energy-efficient building designs.
Ensuring consistent thermal conductivity, this ready-mixed concrete improves the efficiency of heating and cooling systems embedded within the structure.
Heidelberg Materials' Heat Conducting Concrete is available from all our static and mobile production plants. Use our Heidelberg Materials' Location Finder to find your nearest plant and explore how this product can provide energy-saving benefits for your project.
Discover the benefits of our Powercrete and CableCem below, or for more information, contact our customer service team today.
Powercrete®
Powercrete is a robust, higher performing option compared to PowerSand. It is a heat-conducting concrete, used as a bedding and infill material for underground HV and UHV cabling. The special material properties of Powercrete result in low heat transmission resistance.
Increased Power Capability
Given this low thermal resistance, the heat being generated is dissipated effectively and the conductor temperature is reduced. As a result, the power capability of the cable run is increased.
The consistency of Powercrete can be adjusted. For example, a free-flowing consistency is ideal for embedding and encapsulating ducts and cables and is easy to place, finish and compact.
Benefits of Powercrete®:
- Improved heat dissipation for HV and UHV cables
- High heat conduction after drying
- Reduction in magnetic field strength for alternating current
- Increased power capacity
- Reduction of conductor cross-section
- Switch to aluminium conductors possible
- Mitigation of “hot-spots”
| Product name | Description | Benefits |
| PowerSand CBS | PowerSand is a specialised backfill material for power cable installations. The certifies cable sand, which is ENA TS 97-1 compliant, is suitable for installation and backfilling of underground high voltage cables. | • Primarily used in rail, energy, and utilities projects, meeting all thermal property specifications • Easily compacts around power cables to effectively conduct heat away from the source and prevent electrical resistance |
| PowerSand CBS Extra | Heidelberg Materials PowerSand CBS Extra is a non-traditional stabilised backfill as defined in ENA TS 97-1, with optimised performance. | • Lower thermal resistivity to traditional CBS • Reduced carbon footprint |
| Powercrete® | Powercrete® is a robust, higher performing option compared to PowerSand. It is a heat-conducting concrete, used as a bedding and infill material for underground HV and UHV cabling. The special material properties of Powercrete® result in low heat transmission resistance. | • Improved heat dissipation for HV and UHV cables • High heat conduction after drying • Reduction in magnetic field strength for alternating current • Increased power capacity • Reduction of conductor cross-section • Switch to aluminum conductors possible • Mitigation of “hot-spots” • Powercrete® has a thermal resistivity measured at 0.4Km/W |
Benefits of CableCem®
CableCem is a heat-conducting grout developed as an infill material for jacket tube systems. It has excellent free-flowing properties and is well-suited for infilling the residual annular space between the cable and the jacket tube.
Lower thermal resistance with CableCem®
The low thermal resistance of CableCem ensures excellent heat dissipation, reducing capacity loss in the cable line and permanently increasing the power capability of the cable run.
CableCem is offered in a number of options with a range of thermal resistances.
Benefits:
- Excellent free-flowing properties
- Improved heat dissipation for HV and UHV cables
- Reduction in magnetic field strength for alternating current
- Increased power capacity
- Reduction of conductor cross-section
- Switch to aluminium conductors possible
- Mitigation of “hot-spots”
Professional preparation of the construction site and the correct placement of the grout is required in order the ensure the performance of CableCem.
Case study: Powercrete – Hurst National Grid Sub-Station
Powercrete is used on Hurst National Grid Sub-Station. A transformative seven-year project to rewire South London through deep underground tunnels. Read more about this project
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Accreditations
Heidelberg Materials is a member of the Quality Scheme for Ready-mixed Concrete (QSRMC) and all our products carry this certification.
