Abstract
| Language | English |
|---|---|
| Pages | 923-931 |
| Number of pages | 10 |
| Journal | Applied Spectroscopy |
| Volume | 70 |
| Issue number | 5 |
| Early online date | 8 Apr 2016 |
| DOIs | |
| Publication status | Published - 31 May 2016 |
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Keywords
- portable FTIR
- diffuse reflectance
- NDT/Non-destructive testing
- forensic investigation
- blended concrete
- thermal damage
- heat treatment
- PLS modelling
- multivariate
- fly ash
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Nondestructive handheld fourier transform infrared (FT-IR) analysis of spectroscopic changes and multivariate modelling of thermally degraded plain Portland cement concrete and its slag and fly ash based analogues. / Tang, Pik Leung; Algassim, Mohammad; Nic Daéid, Niamh; Berlouis, Leonard; Seelenbinder, John.
In: Applied Spectroscopy, Vol. 70, No. 5, 31.05.2016, p. 923-931.Research output: Contribution to journal › Article
TY - JOUR
T1 - Nondestructive handheld fourier transform infrared (FT-IR) analysis of spectroscopic changes and multivariate modelling of thermally degraded plain Portland cement concrete and its slag and fly ash based analogues
AU - Tang, Pik Leung
AU - Algassim, Mohammad
AU - Nic Daéid, Niamh
AU - Berlouis, Leonard
AU - Seelenbinder, John
PY - 2016/5/31
Y1 - 2016/5/31
N2 - Concrete is by far the world’s most common construction material. Modern concrete is a mixture of industrial pozzolanic cement formulations and aggregate fillers. The former acts as the glue or binder in the final inorganic composite; however, when exposed to a fire the degree of concrete damage is often difficult to evaluate nondestructively. Fourier transform infrared (FT-IR) spectroscopy through techniques such as transmission, attenuated total reflectance, and diffuse reflectance have been rarely used to evaluate thermally damaged concrete. In this paper, we report on a study assessing the thermal damage of concrete via the use of a non-destructive handheld FT-IR with a diffuse reflectance sample interface. In situ measurements can be made on actual damaged areas, without the need for sample preparation. Separate multivariate models were developed to determine the equivalent maximal temperature endured for three common industrial concrete formulations. The concrete mixtures were successfully modelled displaying high predictive power as well as good specificity. This has potential uses in forensic investigation and remediation services particularly for fires in buildings.
AB - Concrete is by far the world’s most common construction material. Modern concrete is a mixture of industrial pozzolanic cement formulations and aggregate fillers. The former acts as the glue or binder in the final inorganic composite; however, when exposed to a fire the degree of concrete damage is often difficult to evaluate nondestructively. Fourier transform infrared (FT-IR) spectroscopy through techniques such as transmission, attenuated total reflectance, and diffuse reflectance have been rarely used to evaluate thermally damaged concrete. In this paper, we report on a study assessing the thermal damage of concrete via the use of a non-destructive handheld FT-IR with a diffuse reflectance sample interface. In situ measurements can be made on actual damaged areas, without the need for sample preparation. Separate multivariate models were developed to determine the equivalent maximal temperature endured for three common industrial concrete formulations. The concrete mixtures were successfully modelled displaying high predictive power as well as good specificity. This has potential uses in forensic investigation and remediation services particularly for fires in buildings.
KW - portable FTIR
KW - diffuse reflectance
KW - NDT/Non-destructive testing
KW - forensic investigation
KW - blended concrete
KW - thermal damage
KW - heat treatment
KW - PLS modelling
KW - multivariate
KW - fly ash
UR - http://asp.sagepub.com/content/70/5/923
U2 - 10.1177/0003702816638306
DO - 10.1177/0003702816638306
M3 - Article
VL - 70
SP - 923
EP - 931
JO - Applied Spectroscopy
T2 - Applied Spectroscopy
JF - Applied Spectroscopy
SN - 0003-7028
IS - 5
ER -