Here you mentioned 5.6% is your optimum bitumen content. By doing the extraction test you have to get back the bitumen percent you added in the plant. ie, 5.6 +- 0.2
Forget about the additives added in the bitumen.
Wastage means aggregate wastage. we are having 22-12mm, 12-6mm, 6-3mm, 3-0mm hot bin sizes at the plant. But we always face a problem with the overflow of 6-3 mm from the hot bin. because the consumption of the 6-3mm in the mix is comparatively low. At the same time over size materials also...