Density and Distillation Tests

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Apparatus for distillation of cut-back asphalt

Among the binder composition tests, Distillation Tests are critical to identify the presence of volatile constituents and the amount of non-volatile residues in bitumen. Dean Stark apparatus is used to determine the presence of water, that needs to be kept to a minimum in order to avoid foaming problems. Finally, Fraas apparatus can be used to determine the low temperature breaking point of binders.