Probing pH levels in civil engineering materials

Cristian Vimer, Siukei Yu, Masoud Ghandehari

Research output: Contribution to journalArticle

Abstract

Optical spectroscopy is a viable approach for subsurface monitoring of pH levels in civil engineering materials. In this work, we describe a method by which optical fibers may be implemented as probes for the in situ measurement of pH levels. This paper describes the development of a nanoporous polymeric matrix, which hosts pH-sensitive chromoionophores. Details of how this pH indicator is strongly attached to the polymer chains through hydrogen bonds are described. Experiments are conducted in the laboratory in aqueous media for monitoring pH levels in highly alkaline and moderately acidic regions. Some detail on indicator immobilization, and signal reversibility are also reported.

Original languageEnglish (US)
Pages (from-to)51-57
Number of pages7
JournalJournal of Materials in Civil Engineering
Volume21
Issue number2
DOIs
StatePublished - 2009

Keywords

  • Acids
  • Carbonation
  • Corrosion
  • Degradation
  • Material properties
  • pH

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Probing pH levels in civil engineering materials'. Together they form a unique fingerprint.

Cite this