Quasistatic pressure compensation and correction of the weighing process in discontinuous asphalt mixing plants

摘要

The invention relates to a quasistatic pressure compensation and correction of the weighing method in discontinuous asphalt mixing plants, in particular the pressure measurement and a corrected weighing method associated therewith. According to legal requirements, recycling material is added to the mix. The recycling material contains according to the weather conditions water, which evaporates abruptly with the other hot additives in the agitator. The weighing process is affected by this evaporation of water, so that either the weighing process temporarily interrupted or the recycling material must be dried. For quasistatic pressure compensation and correction of the weighing method, pressure measuring points are arranged below and above the mineral weighing unit in order to dynamically record the pressure curve during the mixing and weighing process. The measured pressures are used to correct the weighing method, whereby a correction value for the weighing unit is determined at each point in time. The weighing procedure is carried out with the corrected weighing parameters. Thus recycling material may be partially dried or mixed undyed with the bituminous mixture without adversely affecting the asphalt mix quality. The weighing procedure is carried out with the corrected weighing parameters. Thus recycling material may be partially dried or mixed undyed with the bituminous mixture without adversely affecting the asphalt mix quality. The weighing procedure is carried out with the corrected weighing parameters. Thus recycling material may be partially dried or mixed undyed with the bituminous mixture without adversely affecting the asphalt mix quality.