Glass reinforced concrete

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As a glass reinforced concrete components in which by the interaction of are referred to, concrete glass , concrete and reinforcing the glass static is charged. The glass itself is a supporting element. For this purpose, the concrete glass is embedded in the surrounding concrete without a separating layer. In contrast, translucent concrete contains many slim light-conducting fibers, rods or tubes.

A static load calculation of reinforced glass concrete and its production is carried out according to the provisions for reinforced concrete on the basis of DIN 1045. Components made of reinforced glass concrete can be calculated as single-axis or biaxially tensioned structures . In the case of two-axis spanned structures, the largest span may not be more than twice as large as that of the smaller ones. The concrete ribs must be at least 6 cm high for single-axis tensioned structures, at least 8 cm high for biaxially tensioned structures and at least 3 cm wide at the height of the reinforcement.

DIN 4243 distinguishes between:

  • Components made of reinforced glass concrete with live loads of a maximum of 5.0 kN / m² (skylights, light well covers, wall elements).
  • Spatial supporting structures according to DIN 1045 (shells and folded structures) with cylindrical concrete glasses that extend over the entire height of the supporting shell.
  • In special cases, components that can be driven on only with concrete glass.

Reinforced glass concrete structures must be protected against tensile and compressive forces from the building structure by means of expansion and sliding joints . Glass reinforced concrete structures can be made with in-situ concrete or as prefabricated parts and are treated like a B 25 in terms of compressive strength.

Prefabricated elements made of glass blocks are offered for outdoor and indoor applications (e.g. for overhead glazing and as partition walls).

Glass blocks can also be used in fire protection constructions.

Solid glass building blocks are manufactured as pressed glass.
Hollow glass bricks in accordance with DIN EN 1051 consist of two pressed glass halves that are fused together. When it cools down, an air-diluted space is created inside, which improves heat and sound insulation and prevents condensation.

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  • Prof. HJ Herrmann: Script "Glass (Properties and Production)", ETH Zurich, 2016
  • Glass reinforced concrete , information sheet , Solaris glass blocks