Shell Bitumen - WAM Field Test Results Italy - Inspiring Solutions for ...

Picture 1 Emission samplers in the asphalt plant
2.2 Conditions and measurements at the asphalt plant
On 26 October, paving work involved the construction of a structural layer using
Greenfalt. An amount of 870 tons of Greenfalt were laid on the site with a length of
1300 m, 3.5 m width and thicknesses were 90, 50 and 90 mm for the three sections
of this layer.
Recorded air temperatures were 19°C in the morning and 30°C at 3 pm in the
afternoon. Weather condition was cloudy with no wind. Paving crew sampling
duration was around 400 minutes.
Sampling for exposure measurements was performed for the following jobs:
A paver driver
Two screedmen
A skilled labourer / raker
A roller compactor driver
Personal pumps were used for fume sampling with a 2 l/min flow rate. The matter
was collected on PTFE filters (2 µm) placed in the standard 37-mm cassette (see
pictures 2 and 3):
Total aerosols, which represents the mineral and organic aerosols
BSF extracted from the filter with benzene, which represents the total organic
aerosols (the remaining part is regarded as the mineral fraction or MF)
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