World’s first, patented system for fast and efficient construction of multi-story buildings combining advantages of precast panels and cast-in-place structural steel fiber concrete.
In Central Europe, the Filigren system is a very well-known and efficient solution for construction using prefabricated structures. It takes the best aspects of both precast and cast in-situ methods to make construction easier and faster. Light, 2-inch thick precast panels – called Filigran - are used as a base for further in-situ slab installation with both sections working in combination.
PrīmXComposite, a High-Performance Steel-Fiber Reinforced Concrete (HPSFRC) technology, has been installed in hundreds of millions of square feet of floors and structures worldwide and provides strong-in-tension and stiff steel fiber reinforced concrete with minimal steel bar reinforcement.
Combining both – PrīmXComposite and Filigran - takes the system to the next level. The increased speed of installation, reduced rebar requirements, and benefit of the anti-shrinkage system make this combination a perfect solution for multistory building construction.
In the traditional system, the in-situ slab must be reinforced with steel mesh and steel-bar tied panels. Mesh and steel bar installation is labour-intensive and dangerous for workers. (rebar unloading, use of rebar cutters, back strain, and possible stumbling on reinforcement mesh and girders). This method is slow and costly, affecting the entire construction process.
In contrast, the PrīmXComposite-Filigran system uses PrīmXComposite concrete for the upper in-situ cast layer of the concrete. Due to steel fiber reinforcement, the need for steel mesh and steel bar installation is virtually eliminated. The steel fiber reinforcement is distributed evenly throughout, creating an extremely strong and stiff product.
Due to anti-shrinkage system of PrīmXComposite technology (expanding concrete), there is an opposite pre-camber deflection. Therefore, there is much less potential for cracking and deflection due to loading and the self-weight is significantly decreased.
Installing the PrīmXComposite-Filigran system results in 1310 lbs/1000 ft2 of steel bar reinforcement economy for a typical residential slab. The material properties of PrīmXComposite (up to 50% stronger) allow the concrete slab thickness to be minimised and/or larger spans can be used. A typical slab can be reduced in thickness anywhere between 1 – 2 in, providing impressive savings when used in multi-story buildings.
System benefits for involved parties:
- Faster installation of slabs
- No need for site-installed steel rebar reinforcement of top layer
- Less required storage space on site
- Saves days of installation time per floor • Saves cost
- Safer for workers
- Larger span or lower height
- Lower total building height
- Less deflections
- More simple detailing For end user:
- Less cracking
- More free room
- Much faster buildup For Environment:
- Impressive CO2 emissions savings (due to steel and concrete economy)