Digital imaging and analysis - cores,aggregate particles and flat surfaces

摘要

Concrete technology has so far taken little benefit from the potential offered by digital imaging. The industry seems content to sit back and use distorted erroneous 35-year-old control photos to assess voidage of our core samples as well as relying on classifying coarse aggregate shape in terms of a flakiness index as being the reference test for the determination of particle shape. Graham True of GFT Materials Consultancy and David Searle from the School of Technology at the University of Wolverhampton discuss a recent UK PhD thesis that has taken basic office desktop scanners and, following minor modification, used them to scan core samples to determine voidage in an objective and accurate way and also classify aggregate shape.