本技术报告描述了用于评估焦炭物理强度的主要转鼓试验。这些试验包括在不同尺寸的桶中，在不同的持续时间内旋转焦炭，并产生不同的指标。此外，还参考了有关各种强度指数的可用实验证据。这些证据与主要指数和次要指数有关。在本技术报告中，列出了主要强度指数之间的所有可用统计关系，并在可能的情况下以图形说明。

This Technical Report describes the principal drum tests used to asses the physical strength of coke. These tests involve rotation of the coke in drums of different dimensions for different durations, and lead to the production of different indices. Additionally the available experimental evidence relating the various strength indices has been consulted. Such evidence relates the principal as well as secondary indices. In this Technical report, all available statistical relationships between the principal strength indices have been listed and where possible illustrated graphically.