Our Density – up to 4.1 kg/dm³
With reinforced concrete (2.4 kg/dm³), we offer a cost-effective alternative to conventional ballast systems.
For applications requiring higher density in limited space, we can achieve up to 4.1 kg/dm³ — even without the addition of steel scrap.
Our computer-controlled mixing plant also allows the precise production of intermediate densities.
This ensures you receive the most economical solution, custom-tailored in both volume and density to meet your specific requirements.
Our Heavy Concrete – More Compact than Standard Concrete
Unlike radiation-shielding applications, our focus is on cost-efficient, compact ballast solutions. That’s why we have perfected the ideal heavy concrete density for your specific requirements. With our proprietary mix design, we achieve a consistent density of approx. 4.1 kg/dm³.
We produce a fully homogeneous concrete mass without steel scrap, ensuring that the center of gravity of each weight lies precisely at the calculated point. This level of precision makes the difference in series production. For special requirements, we can also achieve higher densities by adding steel scrap.
Thick Coating
For maximum protection in high-stress areas, we have developed a patent-pending polyurea thick-coating system. This innovative coating reliably prevents chipping or cracking under impact and collision, extending the service life of your ballast weights.
The coating is applied using our special in-house process, allowing us to produce various surface textures and finish the weight in your desired color. This gives you not only technical protection, but also an aesthetic finish tailored to your application.
Testing and Inspection
As an experienced manufacturer, Tenwinkel continuously conducts internal tests to ensure the highest safety and load-bearing capacity of our heavy concrete components. Advanced testing methods, combined with decades of experience, guarantee that each product meets the strictest quality standards.
Through systematic trials, we continuously optimize our production processes and develop innovative solutions for demanding ballast applications.
Rely on proven Tenwinkel expertise - since 1959.
Applications and Fields of Use for Heavy Concrete
Ballasting and Mechanical Engineering
In mechanical engineering, our concrete serves as a cost-efficient alternative for ballast and counterweights.
Applications range from modular test weights (5 kg – 165 t) to massive foundations for industrial installations.
The modular design allows flexible weight adjustment. A key example is its use as a crane counterweight, where precise weight values and compact dimensions are essential.
Thanks to its economic advantage, concrete has become the first choice for many ballasting applications.
Radiation Protection and Safety Engineering
Heavy concrete can also be used as a shielding material against radioactive radiation.Our high material densities allow compact construction with optimal weight distribution. Specialized applications make use of the excellent properties of our heavy concrete for precision ballast and shielding solutions in safety and protection technology.
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Tenwinkel GmbH & Co. KG
Max-Planck-Str. 31
48691 Vreden
+49 (0) 2564 - 39 49 38-0
FAQ
What is heavy concrete?
Heavy concrete is a type of concrete with a dry density of at least 2,600 kg/m³. At Tenwinkel, we achieve this high density using heavy aggregates such as magnetite or artificial fillers, produced in our DIN EN ISO 9001:2015 certified facility.
How is heavy concrete made?
We produce heavy concrete by using heavy aggregates instead of standard ones. Materials such as steel granulate, magnetite, or barite are mixed with cement, resulting in the characteristic high density of up to 4.1 kg/dm³.
What is the difference between heavy and lightweight concrete?
The main difference is the bulk density. Our heavy concrete has a minimum density of 2,600 kg/m³, while lightweight concrete is below 2,000 kg/m³. Normal concrete lies between these two ranges.
Which aggregates are used for heavy concrete?
For heavy concrete, we use magnetite and artificial materials such as steel sand and steel granulate as heavy aggregates. These achieve grain densities above 4.9 kg/dm³.
What is the density of heavy concrete in kg/m³?
Our heavy concrete starts at 2,600 kg/m³ and reaches up to 4.1 kg/dm³ with purely mineral compositions. These values are significantly higher than those of normal concrete.
Where is heavy concrete used?
We use heavy concrete for ballasting in crane systems, modular test weights from 5 kg to 165 t, foundations of heavy machinery, and counterweights in mechanical engineering. It is also applied in radiation protection for medical and technical environments, where we provide custom solutions.
Which DIN standards apply to heavy concrete?
Our heavy concrete production follows DIN EN 206 and DIN 1045-2 as the basic standards. For radiation shielding applications, we also apply DIN 25413. These standards define the manufacturing process, properties, and testing methods in our certified production.