**Dealing with uncertainty in material characterization of concrete by education.** / de Rooij, Mario R.; França de Mendonça Filho, Fernando.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

de Rooij, MR & França de Mendonça Filho, F 2017, Dealing with uncertainty in material characterization of concrete by education. in O Çopuroğlu (ed.), *15th Euroseminar on Microscopy Applied to Building Materials.* Delft University of Technology, pp. 259-268, 15th Euroseminar on microscopy applied to building materials, 15th EMABM, Delft, The Netherlands, Delft, Netherlands, 17/06/15.

de Rooij, M. R., & França de Mendonça Filho, F. (2017). Dealing with uncertainty in material characterization of concrete by education. In O. Çopuroğlu (Ed.), *15th Euroseminar on Microscopy Applied to Building Materials *(pp. 259-268). Delft University of Technology.

de Rooij MR, França de Mendonça Filho F. Dealing with uncertainty in material characterization of concrete by education. In Çopuroğlu O, editor, 15th Euroseminar on Microscopy Applied to Building Materials. Delft University of Technology. 2017. p. 259-268

@inproceedings{9959c6cdfc78475492fedcfdffaa270b,

title = "Dealing with uncertainty in material characterization of concrete by education",

abstract = "In this article a trip is taken to characterize concrete through its hardened cement paste based on its microstructure. Optical microscopy is coupled to advanced image analysis, as well as statistical data analysis to characterize heterogeneous concrete material. The article takes a closer look at the determination of the w/c ratio through the analysis of capillary porosity by using image analysis. It is shown that accurate analysis does not shown identical results in the w/c ratio even for standard reference samples with known w/c ratio. In the article it is shown that this is not because the techniques we use to determine the w/c ratios are not accurate enough, but much more because of the local variation in the microstructure. The attention shifts with this article from the analysis technique to what we actually observe in the microstructure. Hopefully this will change our thinking about the distribution in local microstructure variation and will help to set off more research towards the capturing and modelling of these local microstructure variation into consequences at a more structural level.",

keywords = "water-cement ratio, microscopy, thin section, image analysis, microstructure distribution",

author = "{de Rooij}, {Mario R.} and {Fran{\c c}a de Mendon{\c c}a Filho}, Fernando",

year = "2017",

language = "English",

isbn = "978-94-6186-480-2",

pages = "259--268",

editor = "{\c C}opuroğlu, {Oğuzhan }",

booktitle = "15th Euroseminar on Microscopy Applied to Building Materials",

publisher = "Delft University of Technology",

address = "Netherlands",

note = "15th Euroseminar on microscopy applied to building materials, 15th EMABM, Delft, The Netherlands, 15th EMABM ; Conference date: 17-06-2015 Through 19-06-2015",

}

TY - GEN

T1 - Dealing with uncertainty in material characterization of concrete by education

AU - de Rooij, Mario R.

AU - França de Mendonça Filho, Fernando

PY - 2017

Y1 - 2017

N2 - In this article a trip is taken to characterize concrete through its hardened cement paste based on its microstructure. Optical microscopy is coupled to advanced image analysis, as well as statistical data analysis to characterize heterogeneous concrete material. The article takes a closer look at the determination of the w/c ratio through the analysis of capillary porosity by using image analysis. It is shown that accurate analysis does not shown identical results in the w/c ratio even for standard reference samples with known w/c ratio. In the article it is shown that this is not because the techniques we use to determine the w/c ratios are not accurate enough, but much more because of the local variation in the microstructure. The attention shifts with this article from the analysis technique to what we actually observe in the microstructure. Hopefully this will change our thinking about the distribution in local microstructure variation and will help to set off more research towards the capturing and modelling of these local microstructure variation into consequences at a more structural level.

AB - In this article a trip is taken to characterize concrete through its hardened cement paste based on its microstructure. Optical microscopy is coupled to advanced image analysis, as well as statistical data analysis to characterize heterogeneous concrete material. The article takes a closer look at the determination of the w/c ratio through the analysis of capillary porosity by using image analysis. It is shown that accurate analysis does not shown identical results in the w/c ratio even for standard reference samples with known w/c ratio. In the article it is shown that this is not because the techniques we use to determine the w/c ratios are not accurate enough, but much more because of the local variation in the microstructure. The attention shifts with this article from the analysis technique to what we actually observe in the microstructure. Hopefully this will change our thinking about the distribution in local microstructure variation and will help to set off more research towards the capturing and modelling of these local microstructure variation into consequences at a more structural level.

KW - water-cement ratio

KW - microscopy

KW - thin section

KW - image analysis

KW - microstructure distribution

M3 - Conference contribution

SN - 978-94-6186-480-2

SP - 259

EP - 268

BT - 15th Euroseminar on Microscopy Applied to Building Materials

A2 - Çopuroğlu, Oğuzhan

PB - Delft University of Technology

T2 - 15th Euroseminar on microscopy applied to building materials, 15th EMABM, Delft, The Netherlands

Y2 - 17 June 2015 through 19 June 2015

ER -

ID: 54687207