Porous asphalt durability test
作者： S Reilly , S Cook , P Herrington
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摘要: A simple laboratory test procedure to accelerate the oxidation of compacted open graded asphalt mix specimens has been developed. It involves heating 100mm diameter by 65mm high cylinders at 80 degrees Celcius for 3 days under air pressure 2070 kPa (300psi). Comparison viscosity recovered binder with that from field samples aged OGPA shows results in equivalent about 4.5 years field. Compared untreated specimens, cantabro weight losses were greater factors 2.1, 1.9 and 1.5 prepared, plant PA14 PA14HS mixes respectively. The highest average mass loss 25.9 per cent occurred mix. For PA 14HS mixes, 4.0 13.3 Measurement changes specimen dimensions after test, experiments using nitrogen instead air, show pressures used do not significantly affect integrity specimens. (a)
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