RADIO WAVE ABSORPTION BODY AND PRECAST CONCRETE BOARD

摘要

PROBLEM TO BE SOLVED: To provide a radio wave absorption body having high radio wave absorption performance in the whole frequency band (470 to 770 MHz) for UHF broadcasting of television. SOLUTION: A cement hardened body 1 is formed on a face on one side of a netlike body (radio wave reflection plate) 2 made of stainless steel, and a fluororesin layer (hardened object of painted film) 3 is formed on the other face thereof. The cement hardened body 1 contains aggregate made of Mg-Zn ferrite and/or Ni-Zn ferrite at a ratio of 35% or more and 60% or less for total volume of the cement hardened body.