MineralCompositeTechnology - MCT® – means the principle of fabrication of a hybrid construction material system which makes it possible to engineer almost everythink that has to be light, stiff, compressible up to wide ranges and should have a low temperature expansion coefficient.
The system is based on a compression stable core, composed of stone ware in the broadest sense and fiber material on the surface, which is applied with a special resin system either one-sided, two-sided or completely coated. With this technology “stoneplates” up to 1,2 mm thickness can be produced. With the surface coating a pretensioning is brought in the composite. For that reason it is possible to bend the plates and other geometries out of stone within adjustable limits, while they come in a load relief back to their original position. Already by this characteristic the material is fundamentally different from metal.
Such stoneplates are lighter then aluminium, if they are 1 or 2 mm thin.
The stoneplates can have a dimension up to 2m x 3m, or they can be cut into strips and afterwards be stuck together to tubes with rectangular lateral cut. If the tubes have a bore over 15 cm it is also possible to construct round pipes which can find application as impact absorber.
Pressure and dimensionally stable constructions of building composites or completly supporting elements offer a wide application field in the construction sector of buildings and bridges and in the fabrication of trims and construction parts for water, air and land vehicles.
MCT® is a combination of
- pressure stable materials like artificial stone (cement or resin bound materials) , natural stone, ceramics or glass containing substances
- fiber materials like carbon fiber, stone fiber, synthetic fiber and natural or hardened plant fiber
The connective element are resin systems which coat the fibers completely and enter the porous surface of the stone materials and therefore take care of a smooth force transmission.
One important characteristic of pressure stable and porous mineral stone materials is the capability to absorb vibrations in a high spectrum of frequency.
The example of CFS®- CarbonFiberStone - shows that the composition of granite or basalt and carbon fiber functions well.
Particularly natural stone is very interesting in this composite, because it can be mined with a low energy input and is featured by nature with extraordinary characteristics. Due to its hunderts of million years lasting origination process it does not only show from the mechanic viewpoint a high degree of homogeneity but is capable to absorb high pressure and shearing force without any damage. In comparison with concrete natural stone has the advantage to be at least two times as pressure stabil and four times as tension stable and does de facto not age – at least not in times of scale which are relevant for building and construction of human beings.
Stone gets an enorme tension stability with the help of carbon fiber and it arises a construction material with the same or even a lower specific weight as aluminium.
Because of the pretension trough the carbon fiber it becomes possible to transform the porousity of the stone into a flexible capacity – solid granite shows so far unknown elastic features.
The elastic limits of CFS® are even higher than those of metal, the material stays elastic until breakage.
The e-modulus of CFS® can be adjusted within wide ranges depending on thickness of fiber versus stone and fiber direction. The range is in betwen the e-modulus of ALuminum and steel, at a specific weight of 2,4 – 2,7 g/cm3, depending on carbon content.
The damping properties are etter tha those of metals and pure carbon fiber materials.
Other combinations comprise MFS® – StoneFiberStone, GFS®, using basalt fibers – GlassFiberStone, using glass fibers und NFS® – NaturalFiberStone, using natural fibers, which do not only provide different application specific properties, but also interesting values regarding the needed material production energy, up to the possibilty to capture and store CO2 by the production process.
The aim is a deveopment of CO2 reducing or even CO2 binding material production – called CleanMaterialSystems – CMS® – which may bedcome necessary to optimize industrial development for wide application ranges and at the same time solve the critical problem control green house gas emíssions and growing CO2-load of the ocean, in order to stabilize the climat system.
The goal in future technical product engineering is a corresponding “CO2-engineering”.
Please find the latest flyer on our Technolgy here introductionMCT®.