Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete. While concrete has been used for thousands of years, the use. Cobiax [1] slabs contain synethic void forming modules making slabs up to 35% lighter. This has a huge benefit for floor slabs in buildings as. efficient economic sustainable lightweight concrete slabs. Germany. Heinze Cobiax Deutschland GmbH. Otto-von-Guericke-Ring D Wiesbaden.

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No need for special trained staff or waiting specialized sub-contractors. Of these types, only waffle slabs can be regarded to have a certain use in the market. Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete.

spab But the use will always be very limited due to reduced resistances towards shear, local punching and fire. The Cobiax technology and products are internationally patented Expertise An important amount of tests and theoretical research on the subject of Cobiax slabs has been carried out by various academic institutions. For a voided biaxial slabs with spheres the shear resistance is proportional to the amount of concrete, as the special geometry shaped by the ellipsoidal voids acts like the famous Roman arch, enabling all concrete to cibiax effective.

Our void former modules also help to reduce harmful environmental emissions in concrete slabs such as CO2 by saving concrete and steel — both cpbiax building materials. Although not reinforced, coffers were used to reduce the weight.


From Wikipedia, the free encyclopedia. Due to the specific shape of the voids, cobixx are no issues with internal pressure. In principle, voided biaxial slabs act like solid slabs. Never miss out on any news again. Flexible Span up to 20 m.

Voided biaxial slab – Wikipedia

Read below about the types of Cobiax products and meet the advantages of our structural system. No need for special steel chairs in Cobiax areas. What we mean by that? With its “Made in Germany” design, and the coblax production and sales sites at various locations worldwide, the brand is setting a sign for its mission: Also indicated for the top-down technique.

Voided is more capable

Read below about the types of Cobiax products and meet the advantages of our structural system Cobiax Product: Several methods have been introduced during the last decades, but with very limited success, due to major problems with shear capacity and fire resistance as well as impractical slzb.

Cobiax is a Swiss made special bi-axial voided slab system. All these advantages, added together, increase the profitability of the project considerably. Reduction of the foundation load.

COBIAX | Voided is more capable

The catch phrase “Wider Scopes” extends far beyond the possibilities for modern slab technology. After the site finishing, concrete is poured and cured.

The soffit has a flat surface that is ready to finish and does not require a false ceiling for aesthetic purposes. A building that is lighter and slimmer overall, can be planned. Most attempts have consisted of laying blocks of a less heavy material like expanded polystyrene between the bottom and top reinforcement, while other types included waffle slabs and grid slabs.


The voids in the concrete slab, which is to be cast later, are inserted in the form of void formers or structural formers, both cobjax out of plastic.

While a true biaxial slab as the BubbleDeck system must be calculated lsab a solid slab, ribbed slab systems, like the U-boot system, consisting of a grid of orthogonal “I” beams, must be calculated as beams.

Profiling Building with Cobiax always means making a commitment to future-oriented solutions in the area of resource conservation and sustainability. They determine the division of the building into individual rooms or at least dictate the structure of the aesthetic impression.

Voided Concrete Slabs

Intelligent and sustainable building — anywhere in the world. This has been confirmed by a life cycle fobiax of the product from manufacture to sustainable demolition. Joseph Moniera French gardener, patented a design for reinforced garden tubs inand later patented reinforced concrete beams and posts for railway and road guardrails. The voids are positioned in the middle of the cross section, where concrete has limited effect, while maintaining solid sections in top and bottom where high stresses can exist.