An image analysis procedure to quantify the air void system of mortar and concrete

The entrained air void system in cement paste and concrete directly affects both the fresh-state workability and the freeze-thaw durability of concrete pavements and structures. In order to effectively study the air void system, the volume, spacing, and size distribution of the air bubbles must be q...

Full description

Saved in:
Bibliographic Details
Published in:Materials and structures 2015-10, Vol.48 (10), p.3087-3098
Main Authors: Fonseca, P. C., Scherer, G. W.
Format: Article
Language:English
Subjects:
Air content
Building construction
Building Materials
Civil Engineering
Computation
Concretes
Engineering
Image analysis
Machines
Manufacturing
Materials Science
Matlab
Original Article
Processes
Scripts
Size distribution
Solid Mechanics
Theoretical and Applied Mechanics
Voids
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The entrained air void system in cement paste and concrete directly affects both the fresh-state workability and the freeze-thaw durability of concrete pavements and structures. In order to effectively study the air void system, the volume, spacing, and size distribution of the air bubbles must be quantified. This manuscript describes an inexpensive and effective procedure to quantify the air void system using automatic image analysis. We compare various materials used for sample preparation and recommend a procedure to create more accurate images. We further implement a stereological analysis method in the form of a user-friendly and customizable Matlab script. The script was verified by comparing bulk density measurements between air-entrained and control samples with the air content computed by image analysis. As a result, the user can quantify the air void system in a variety of samples by computing the air content, specific surface, spacing, and size distribution of the bubbles.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-014-0381-9