Impact of Thermal Stress on Abrasive Dust from a Carbon Fiber-Reinforced Concrete Composite

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Arne Koch - , Medizinische Fakultät Carl Gustav Carus Dresden, Technische Universität Dresden, Universitätsklinikum Carl Gustav Carus Dresden, Universität Rostock (Autor:in)
  • Lukas Friederici - , Universität Rostock (Autor:in)
  • Petra Fiala - , Institut für Verfahrenstechnik und Umwelttechnik (IVU), Arbeitsgruppe Mechanische Verfahrenstechnik (MVT) (Autor:in)
  • Armin Springer - , Universität Rostock, Technische Universität Dresden, Universitätsmedizin Rostock (Autor:in)
  • Sebastiano di Bucchianico - , Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt (Autor:in)
  • Michael Stintz - (Autor:in)
  • Marcus Frank - , Universität Rostock (Autor:in)
  • Christoph Paul Rüger - , Universität Rostock (Autor:in)
  • Thorsten Streibel - , Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt (Autor:in)
  • Ralf Zimmermann - , Universität Rostock (Autor:in)

Abstract

Recently, a novel corrosion-resistant construction material, Carbon Concrete Composite (C3), consisting of coated carbon fibers embedded in a concrete matrix, was introduced. However, thermal exposure during domestic fires may impact the release of organic pollutants and fibers during abrasive processing and/or demolition. Consequently, the objective of this study was to explore the emission characteristics of toxic compounds and harmful fibers during the dry-cutting after exposure to 25–600 °C (3 h, air). These parameters mimic the abrasive machining and dismantling after a domestic fire event. Mass spectrometry and chromatography served as analytical methodologies, and no organic pollutants for exposure temperatures ≥ 400 °C were found. In contrast, significant amounts of pyrolysis products from the organic fiber coating were released at lower temperatures. Studying the morphology of the released fibers by electron microscopy revealed a decrease in fiber diameter for temperatures exceeding 450 °C. At ≥550 °C, harmful fibers, according to the World Health Organization (WHO) definition, occurred (28–41 × 103 WHO fibers/m3 at 550–600 °C). This leads to the conclusion that there is a demand for restraining and protection measures, such as the use of wet cutting processes, suction devices, particle filtering masks and protective clothing, to handle thermally stressed C3.

Details

OriginalspracheEnglisch
Aufsatznummer39
Seitenumfang22
FachzeitschriftFibers
Jahrgang10
Ausgabenummer5
PublikationsstatusVeröffentlicht - Mai 2022
Peer-Review-StatusJa

Externe IDs

Scopus 85130025269

Schlagworte