Electromagnetic wave shi - rudo structure

摘要

PURPOSE:To obtain a structure which can nearly perfectly stop an inflow of harmful radio waves and a leak of indoor radio waves and whose construction can be executed simply by a method wherein grid-shaped core materials or the like whose conductivity is excellent are connected and installed inside the concrete and a fibrous, powdery or granular material whose conductivity is excellent is mixed with the concrete. CONSTITUTION:Core materials 6 whose conductivity is excellent and which are grid-shaped or a mesh-shaped are connected electrically; they are installed inside the concrete 7; a material 10 which is fibrous, powdery or granular and whose conductivity is excellent is mixed with the concrete 7 in a volume ratio of 1 to 3% which is required for electrical contact or electrostatic coupling. For example, a shielding panel 11 is formed to be a panel shape by adding a mixture material 10 such as a steel fiber or the like to the ordinary concrete, by arranging core materials 10 such as grid iron rods or the like inside the concrete and, in addition, by attaching a frame member 12 composed of angle steel or the like to a peripheral edge part. Individual panels 11 are bonded while individual frame members 12 are bolted by using coupling bolts 13 or the like.