Evolution of the pebble disc as function of orbital distance from the primary for the nominal disc with binary separations of a_bin = 20 au (left) and a_bin = 100 au (right). The grey background curves correspond to the single-star case. The disc profiles are shown every 10⁵ years. The top panels indicate the evolution of the pebble surface density, and the bottom panels show the evolution of the pebble sizes. The abrupt change in the pebble size at r ~ 0.4–5 au for all the profiles and times corresponds to the location of the water-ice line. This also affects the profiles of the pebble surface density.