The experimental challenges faced o

The experimental challenges faced on this research were vast and wide-varying; experimentally, creep and cohesion curves of binder and mastic are extremely difficult to acquire. The primary experimental challenges were related to both sample preparation and software optimization. Once the sample is poured into the thimble at the height of the thimble rim, a concave meniscus of binder would form around the inner circumference of the thimble. One approach is to over-pour the sample, since it is known that asphalt shrinks as it cools. Once cooled at room temperature, the sample would need to be at least at rim level. Having the sample above rim level is also acceptable since another concern from underpouring is the bottom of the UNHT module colliding with the rim before the indenter is able to reach the sample surface. This is not an issue with an over-poured sample.