POROUS CONCRETE PANEL

PROBLEM TO BE SOLVED: To enable installation even on a road where a conventional sound-proof panel can not be installed, to shorten the installation and construction period and to reduce the cost. SOLUTION: The porous concrete panel is formed to have a percentage of void of 24% to 30%, a thickness o...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HOSHINA NORIKO, NAKATANI IKUO, GOTO HIROYUKI, ITO AKIHIKO, WAKAYAMA HIROYASU, KONDO SEIICHI, OWAKI MASANAO, TANAKA HIDEKI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To enable installation even on a road where a conventional sound-proof panel can not be installed, to shorten the installation and construction period and to reduce the cost. SOLUTION: The porous concrete panel is formed to have a percentage of void of 24% to 30%, a thickness of 30 mm to 50 mm, and the dominant frequency of a sound absorption coefficient which is within a range of 750 Hz to 1,500 Hz or preferably near 1,000 Hz. COPYRIGHT: (C)2006,JPO&NCIPI