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Aggregate shape is considered to be a key parameter for concrete and bituminous mixtures design. Generally, this parameter is determined by calculating a ratio between the different dimensions of the particles and by comparing this ratio to a flatness or elongation limit. The standardized methods...
A new image processing based test method has been developed, in order to assess the percentage of crushed and broken surfaces in alluvial coarse aggregate. This test method has been implemented into the VDG40 videograder and an effective test procedure has been set. Indeed, the analysis of a 1 kg...