1. POWER PLANTS ASHES RECOVERY IN ECO-FRIENDLY MORTAR COMPOSITIONS. Authors: GOG ADRIANA, ROMAN MARIUS, ROMAN CECILIA, GAGEA LUCIA, TÓTH ANIKÓ, VALENTINA CETEAN, LÁSZLÓ SZÉLL.2. RECOVERY POSSIBILITIES OF POWER PLANT FLY ASH FROM ZALĂU. Authors: ADRIANA GOG, MARIUS ROMAN, CECILIA ROMAN, TÓTH ANIKÓ, LUCIA GAGEA, VALENTINA CETEAN, LÁSZLÓ SZÉLL.