Imperial College London
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Professor Hong S. Wong

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Concrete Materials
 
 
 
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Contact

 

+44 (0)20 7594 5956hong.wong Website

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

228DSkempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yio:2022:10.1680/jmacr.21.00094,
author = {Yio, MHN and Ho, YW and Abdul, Wahid F and Wong, H and Buenfeld, NR},
doi = {10.1680/jmacr.21.00094},
journal = {Magazine of Concrete Research},
pages = {889--904},
title = {Analysis of cement paste and aggregate content of concrete using micro X-ray fluorescence},
url = {http://dx.doi.org/10.1680/jmacr.21.00094},
volume = {74},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A new method for determining the cement paste, fine aggregate and coarse aggregate content of hardened concrete using micro X-ray fluorescence (μXRF) is presented. The method involves mathematical and morphological operations to extract aggregate particles from large-area (100 x 50 mm2) composite element maps acquired with μXRF. The method was tested on five concretes containing different types of aggregates including gravel, limestone, siliceous sand, and sintered lightweight aggregates. The results were compared against point count analysis and data from the actual mix design. The average errors in relation to the mix design for the measured fine aggregate, coarse aggregate, total aggregate, cement paste contents and fine/coarse aggregate ratio were 12%, 12%, 3.4%, 10%, and 27% respectively. All measured values fell within ±4% of those point-counted. An image size of > 2000 mm2 (at least five times maximum aggregate size) was found to be required to obtain representative results. The advantages and limitations of the proposed method are discussed.
AU  - Yio,MHN
AU  - Ho,YW
AU  - Abdul,Wahid F
AU  - Wong,H
AU  - Buenfeld,NR
DO  - 10.1680/jmacr.21.00094
EP  - 904
PY  - 2022///
SN  - 0024-9831
SP  - 889
TI  - Analysis of cement paste and aggregate content of concrete using micro X-ray fluorescence
T2  - Magazine of Concrete Research
UR  - http://dx.doi.org/10.1680/jmacr.21.00094
UR  - https://www.icevirtuallibrary.com/doi/10.1680/jmacr.21.00094
UR  - http://hdl.handle.net/10044/1/94624
VL  - 74
ER  -
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