Title: AARVE - ACCELERATED TESTING OF RESOURCE SAVING PAVEMENT. AARVE I - COMPARISON OF A FULL DEPTH ASPHALT AND A TRADITIONAL PAVEMENT
Abstract: The report describes tests in a road testing machine carried out with the purpose of comparing the life of a full depth asphalt pavement with that of a traditional pavement built-in in full scale on a typical Danish clay subgrade. The critical parameters, as regards design -horizontal and vertical strains and stresses and temperature -were measured by built-in transducers. The report concludes that the o-isotherms penetrate farthest into the subgrade under the full depth asphalt resulting in longer softening and a weakened e-modulus. The full depth asphalt was designed for 15000 passages at an axle load of 8 tons. The strains and stresses measured indicated cracks in the asphalt during the thawing period at about 5700 passages which developed into clearly visible surface cracking after 25000 passages. The traditional pavement was designed for 25000 passages at an axle load of 8 tons. When the tests were completed after 40000 axle passages, the asphalt had not cracked. A certain compaction of the subgrade and the unbound basecourse was demonstrated whereas the subbase of a relatively uniform grain distribution showed signs of shear deformations. (TRRL)
Publication Year: 1980
Publication Date: 1980-07-01
Language: en
Type: article
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