| Autor: |
DZUR, BIRGER, ROTHER, WOLFGANG, NUTSCH, GABRIELE, SCHILLING, JOACHIM, SCHWARZE, AXEL |
| Zdroj: |
Annals of the New York Academy of Sciences; December 1999, Vol. 891 Issue: 1 p223-230, 8p |
| Abstrakt: |
A large number of techniques in the construction industry are dealing with the mixture, reinforcement and use of concrete and related materials. But this is contrasted by only a few technologies for the destruction of old construction substance. Especially strongly steel reinforced concrete poses problems for breaking it apart with conventional means. In this paper some thermodynamical properties of concrete and some theoretical considerations about its melting are given. The development of a new technology for thermal cutting and the destruction of steel reinforced concrete and related materials by using a DC-plasma torch with non-transferred arc is described. Such a torch is well known from thermal spraying applications. It was modified and optimized to cut and drill concrete with a nitrogen plasma jet, as it is shown in some examples. |
| Databáze: |
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