Voidage assessment of concrete using digital image processing Available to Purchase

This paper describes an objective means of assessing the amount of voidage found within the curved surface of concrete core samples that has been developed by mechanically rolling core samples above a modified flatbed desktop scanner so as to align with the scanning charged coupled device illuminated cross-head. A freely distributed software program was used to process all images to determine percentage voidage and voidage size distribution among other attributes. This work shows that the size, shape and distribution of air voids and aggregate characteristics can be determined using core samples scanned over modified flatbed desktop scanners. A proprietary office desktop scanner with a resolution of 1200 dpi was used.