Tag: Hydraulically bound Material

I was at a pavement meeting this week for a road tender project. These meetings never used to happen, as the choice was blacktop of what thickness (except DBFOs) and the market place used to sort that out, usually after an award. As the rules are new in HD 26/06 and the now much clearer IAN 73/06, 2009 update, there is a part of the meeting that is educative. It's not that its complicated to understand as you still end up with thicknesses of layers, it's the choice that complicates. In this choice matrix are grey areas, the largest is…
Running up to Christmas, just had company Christmas lunch, do you notice when the loud music starts the older guys head for the door? I am part of that congregation. Anyway I am old enough to remember digging sand replacement densities in lean mix and wondering at the mysteries of comparing them to a theoretical density. Then there used to be a minimum strength, then a minimum and a maximum, then if my memory is correct, a minimum again. Whether it was the blacktop lobby or a diminishing amount of long greenfield road jobs, the good old leanmix was no…
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