Determination of the proportion of anhydrous cement using SEM image analysis

•SEM image analysis was used to determine the proportion of anhydrous cement in materials.•A specific MATLAB program was developed for SEM image analysis.•Reactive characteristics of powder by-products were determined with isothermal calorimetry.•Significant mechanical properties have been measured...

Full description

Saved in:
Bibliographic Details
Published inConstruction & building materials Vol. 126; pp. 157 - 164
Main Authors Gaël, Blanc, Christelle, Tribout, Gilles, Escadeillas, Sandrine, Geoffroy, Tristan, Soum-Fontez
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.11.2016
Elsevier B.V
Elsevier
Subjects
Analysis
Anhydrous cement
Cement
Civil Engineering
Engineering Sciences
Hydration kinetics
Industrial by-products
Isothermal calorimetry
Mechanical properties
Scanning microscopy
SEM image analysis
Specific surface
France
SEM image analysis
Specific surface
Industrial by-products
Anhydrous cement
Isothermal calorimetry
Hydration kinetics
concrete
hydration
segmentation
Online AccessGet full text

Cover

More Information
Summary:•SEM image analysis was used to determine the proportion of anhydrous cement in materials.•A specific MATLAB program was developed for SEM image analysis.•Reactive characteristics of powder by-products were determined with isothermal calorimetry.•Significant mechanical properties have been measured on standard mortars with by-products. The proportion of anhydrous cement in materials is essential data in relation to reactivity potential, particularly in by-products that may be reused it in concrete techniques. This paper presents a method based on Scanning Electron Microscopy (SEM) image analysis and a specific program in Matlab that was developed to statistically determine the proportion of anhydrous cement. Industrial by-products containing anhydrous cement were tested by this method and a percentage of around 15–20% was found in the analyzed by-products. The reliability of these results is noteworthy in comparison with those given by classical image analysis software. The reactive characteristic and the hydration kinetics of the analyzed by-products were also verified using isothermal calorimetry and a mechanical study of standard mortars in which the cement had been partially replaced by these by-products.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2016.09.037