Tag: subgrade

The pavement's weakest link? I think so, a survivor from Macadam?, seems to have been around so long that we have become complacent. Before stiffness measurement, performance was a particle size distribution (PSD), frost heave, and the quite strict laying and compaction specification. I should say here to foreign visitors, wish I had some!!, that I refer to the specification for highway works. A monumental work from the UK's government engineers, a species not often seen walking on subbase, it is written to protect the client (well they write it?) and provide the tax payer with a good for value…
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