Tuesday, 18 September 2012

Material card 10 : LiTraCon


 Litracon


Litracon™ is a combination of optical fibres and fine concrete.  It can be produced as prefabricated building blocks and panels.  Due to the small size of the fibres, they blend into concrete becoming a component of the material like small pieces of aggregate.  In this manner, the result is not only two materials - glass in concrete - mixed, but a third, new material, which is homogeneous in its inner structure and on its main surfaces as well.

Thousands of optical glass fibres form a matrix and run parallel to each other between the two main surfaces of each block.  The proportion of the fibres is very small (4%) compared to the total volume of the blocks. Moreover, these fibres mingle in the concrete because of their insignificant size, and they become a structural component as a kind of modest aggregate. Therefore, the surface of the blocks remains homogeneous concrete.  In theory, a wall structure built from light-transmitting concrete can be several meters thick, because the fibres work without almost any loss in light up until 20 meters.  Load-bearing structures can be also built of these blocks, since glass fibres do not have a negative effect on the well-known high compressive strength value of concrete.  The blocks can be produced in various sizes and with embedded heat-isolation.

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