The Laboratory has since carried out an extensive program of testing on construction sites. Early results from this program are presented which indicate that pavement stiffness is important but which also confirms that other non-structural factors increase the risk of failure. Cores taken from the surfacings established that slippage is strongly associated with a lack of shear near the interfac…
Rolled asphalt is used as the wearing course on most heavily trafficked roads in Britain, and on the majority of these it performs very well. However, some conventional rolled asphalts have insufficient resistance to permanent deformation for roads which carry the heaviest traffic. In an effort to improve visco-elastic properties and resistance to permanent deformation, experiments have been ca…
The structural strengthening brought about by laying pervious macadam surfacings on existing roads has been assessed by using linear elastic theory to compute the stresses and strains induced in the pavements by vehicle loading before and afetr surfacing with the pervious macadam. These computations predicted a significant reduction in the magnitude of stresses and strains after surfacing, a re…
Regional Seminar On Low Cost Roads., Volume 2. Proceedings Detailed Engineering design