Best Practices for Conducting 2D DIA

This chapter presents best practices for conducting Dynamic Image Analysis (DIA) of soils. First, the efficacy of DIA for determining particle size and shape distributionParticle size and shape distributions (PSSD) is established. In particular, the feasibility, repeatabilityRepeatability, and accuracyAccuracy of DIA for routine analysis of particle size and shape distributionParticle size and shape distributions (PSSD) was investigated using sixteen granularGranular soils spanning a number of common sizes and shapes. Second, the impact of the chosen size and shape descriptors on the resulting particle granulometryGranulometry was presented. Next, the effect of a variety of test parameters including moistureMoisture content, sample weightWeight, primary airAir pressurePressure, and test duration were explored to determine the optimal specimen weightWeight and equipment settings for DIA. Finally, the efficacy of DIA in resolving mixturesMixture of fineFine and coarseCoarse sands was also established.