| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a concrete sound absorbing structure at a low cost, which exhibits a high sound absorption coefficient, excellently absorbs noise having a frequency that falls in the range of a main frequency band of traffic noise, and facilitates mounting work thereof. <P>SOLUTION: According to the concrete sound absorbing structure, a porous concrete panel 30 is mounted on a concrete wall body 20. The porous concrete panel 30 has a plurality of mounting fittings 31 embedded therein such that their distal ends protrude to a rear surface of the porous concrete, while the wall body 20 has insertion holes 21 formed therein at locations corresponding to the mounting fittings 31 embedded in the porous concrete panel 30, such that the mounting fittings 31 are loosely insertable in the insertion holes 21. Further the wall body 20 has a recess 22 in which the porous concrete panel 30 is embedded, such that a front surface of the porous concrete panel 30 is almost flush with a front surface of the wall body 20 when the porous concrete panel 30 is bonded to the wall body 20 by means of an adhesive. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
