Concrete-Concrete

Concrete-Concrete floor reinforcement

Mixed brick-cement floor popularity increased at the same time as the reconstruction of Italy following the post-war period. In these years the steel used in the joists was reduced to the minimum necessary and, in fact, the existing floors of this type are now inadequate compared to the requirements imposed by the regulations.

The Al-fer dry connector is ideal for reinforcing concrete floors thanks to its high resistance to the particular geometric shape and the high yield strength of about 600 Mpa. The technique involves the installation of the DRY connector and the construction of a new collaborating concrete slab.

An existing brick cement floor reinforced by a new reinforced concrete hood made integral thanks to the use of the al-fer dry connector allows the increase of flow compared to the new loads, better seismic performance (flat diaphragm) and is decidedly economical compared to its total reconstruction.

For this type of application, the Al-fer type CC1 dry connector has been designed, which in the standard version is 12 cm long, including 4 headers for anchoring in the new slab, 1 cm of round full diameter 16 mm and conical thread with a reverse fit of 7 cm. This geometry allows the installation of the connector in most of the brick joists in compliance with the packaging irons in the lower part.

Installation is simple, does not require a specialised worker and consists of 2 phases: