ROOF TILES MADE INTEGRALLY OF ELECTROSTATIC-FILTER ASH FROM THE POWER PLANT OF PAROŞENI

摘要

The invention relates to a process for making roof tiles using electrostatic filter ash. According to the invention, the process consists in mixing 78...88% flying ash, 13...18% sodium hydroxide and sodium silicate activator and 5...7% water, the resulting mass being subjected to vibration pressing at 10 MPa, to heat treatment at a temperature of 60°C, for 12 h, to result in a product having a compression strength of 20 MPa.