The growing needs for sustainability demand that porous asphalt (PA), one of the most critical types of asphalt mixtures, can be produced with high quality, low production temperature and using high percentages of reclaimed materials. With the support of the European Life+ program, a new decomposition technique was developed to decompose the reclaimed PA into the mortar sand (grain size ≤ 2 mm, bitumen content 10–14%) and the reclaimed stones in various fractions (bitumen content less than 1%).