| 摘要 |
<p>In the batchwise production of asphalt concrete only such aggregate is utilized, as comprises a coarse-grained portion, a fine-grained portion and a filler portion. The coarse-grained portion and the bituminous binder used are mixed in a mixer, and the filler portion is added to the mixer in such a way that it is has been taken up by and suspended in the binder film deposited on the coarse-grained portion before the free particles of the fine-grained portion are added. In such a way the thickness of the binder film and the capability thereof to take up the particles of the fine-grained portion are increased so that also said particles are coated with and suspended in the binder.
<??>An apparatus for carrying the production process into effect has a control device (30) to ensure that the binder film deposited on the particles of the coarse-grained portion has taken up the particles of the filler portion and has thereby obtained the desired thickness and viscosity before the free particles of the fine-grained portion are supplied. </p> |
