Sensing high pH and ASR detection in cementitious materials

Alexey Sidelev, Engui Liu, Weihua Jin, Gamal E. Khalil, Christian Bruckner, Masoud Ghandehari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents research on the spectroscopy detection of pH change and the detection of alkali-silica reaction (ASR) through the use of meso-tetra(pentafluorophenyl)porpholactone (TFPL) and its Pt(II) complex. The ability of TFPL and TFPLPt to function as an optical high pH sensor is described and tested. The dynamic range for the sensor TFPLPt in solution is from pH 11.5 to 13.2. The calibration of the sensor with a high pH electrode is also described and a digital imaging technique is proposed based on the application of an ASR detection kit. This paper summarizes the current work on imaging techniques for ASR detection as well as optical fibre pH sensor preparation and evaluation.

Original languageEnglish (US)
Title of host publicationfib Symposium 2012
Subtitle of host publicationConcrete Structures for Sustainable Community - Proceedings
Pages275-278
Number of pages4
StatePublished - 2012
Eventfib Symposium 2012: Concrete Structures for Sustainable Community - Stockholm, Sweden
Duration: Jun 11 2012Jun 14 2012

Publication series

Namefib Symposium 2012: Concrete Structures for Sustainable Community - Proceedings

Other

Otherfib Symposium 2012: Concrete Structures for Sustainable Community
CountrySweden
CityStockholm
Period6/11/126/14/12

Keywords

  • ASR detection
  • Cementitious materials
  • Concrete durability
  • Imaging
  • Optical fibre sensor
  • PH sensing
  • Spectroscopy

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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