AS NZS 2891.11:2014 pdf free
AS NZS 2891.11:2014 pdf free.Methods of sampling and testing asphalt
Unless otherwise specified, a sample of hot asphalt shall be obtained, in accordance with AS/NZS 2891.1.1, but shall not be coned and quartered. The sample shall be large enough to yield a minimum of 200 particles retained on the 4.75 mm or 9.50 mm sieve as appropriate. The 4.75 mm sieve shall be used for asphalt mixes of 10 mm nominal size or less and the 9.50 mm sieve shall be used for asphalt mixes of nominal size larger than 10 mm.
The procedure shall be as follows:
(a) Sieve the sample while it is still hot over the 9.50 mm or 4.75 mm sieve, taking care not to overload the sieve. If necessary, sieve the sample several times to obtain the required number of particles.
NOTE: Shaking the material on the sieve should be reduced to a minimum to prevent coating of previously uncoated particles.
(b) Place the particles retained on the appropriate sieve in one particle layer in a large clean tray and commence examination immediately. Using the forceps, carefully examine each particle, viewing only the upper surface, under good lighting conditions such as direct sunlight or fluorescent light. Classify the particle as partially coated if even a tiny speck of uncoated stone is noted and place it in a separate tray. Classify the particle as completely coated if it is completely coated and place in another tray.
(c) Count the number of particles classified as partially coated and the number of particles classified as completely coated.AS NZS 2891.11 pdf download.
