Evaluation of Materials for Asphalt Mixture Performance, Semi-Circular Bend Laboratory Tests

<p>A study was conducted to evaluate the repeatability of the Flexibility Index of asphalt mixtures obtained according to AASHTO TP-124-16.&nbsp; Three asphalt concrete samples were mixed and compacted using the Superpave Gyratory Compactor in one laboratory.&nbsp; The samples were then cut to specific&nbsp;dimensions for semi-circular bend testing based on the AASHTO Specifications at a single laboratory using a dedicated cutting equipment.&nbsp; The samples were randomized and distributed equally among three different testing labs.</p> <p>The process was repeated three times and in some instances the rate of loading was varied.</p> <p>This experiment allowed to study the repeatability of the the Flexibility Index</p>