Abstract
Soft rock materials are frequently used for fills and subgrade in construction works. However, the stability and the durability of such materials is generally poor under natural environments. In this paper, the influence of rock properties and compaction degree on the mechanical stability of the compacted materials is investigated. First, the properties of soft rocks are inspected by being associated with their use for fill materials. Next, the settlement and the strength reduction of compacted materials due to slaking and grain breakage of rocks are examined through some laboratory experiments. As a result, it can be found that there exists a specified relationship among the properties, the compaction degree and the mechanical stability of compacted soft rock materials.
