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LOW VOLUME ROADS INFORMATION SHARING
| Information Pages (under development) |
Fulton Hogan OTTA seal projects |
| Wearing Course Metal trials |
| Gravel Loss survey results. |
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LOW VOLUME ROAD INFORMATION SHARING - We are not able to help you if we can't get access to the trials that you are conducting. Please contact us by e-mail to webmaster@roads.co.nz for us to create web pages that we can use to share your findings.
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Interesting snippet:
Extract from Main Highways Board 1925 – “the top most pavement layer – called a wearing course in those days of mainly unsealed roads – had to comprise “sound particles --- free from organic matter” and meet what would appear to be today a convoluted grading requirement. –
Passing 34mm 100%
Passing 23mm 45-80%
Passing 4mm 25-40%
Passing 0.075mm 4–14%
In essence the requirement was for a reasonably sound material, all passing 34mm but with a clearly identifiable fraction bigger than23mm, with control at the 4mm size and the measure passing 0.075mm, to ensure a substantial fine gravel/sand size component as the filling mortar.
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