Yes, as mentioned above we cannot just build a pavement on any material, it would be like placing glass on a mattress. If the sub-grade is well compacted, for instance with an impact roller a fairly good strength can be achieved.
Yes, as mentioned above we cannot just build a pavement on any material, it would be like placing glass on a mattress. If the sub-grade is well compacted, for instance with an impact roller a fairly good strength can be achieved.