What does the presence of a core not delaminating indicate about the sampling process?

The presence of a core that is not delaminating indicates that there may be an issue with bond quality between the layers of asphalt or between the asphalt and the subbase. This observation suggests that while the core itself may be intact, it is essential to take further action to evaluate why the layers are not separating as expected.

In the context of the sampling process, the core's integrity is vital for determining the quality of the hot mix asphalt laid down in the field. If the layers are bonded too well or improperly, this could signal problems such as moisture trapped between layers or insufficient compaction. Thus, further investigation is warranted to ensure that the asphalt is meeting quality standards and hasn't encountered issues that could affect its performance over time. This may involve more testing or inspection to assess the underlying conditions that led to this outcome.