LIGHTWEIGHT CONCRETE SOUND-ABSORBING MATERIAL

PROBLEM TO BE SOLVED: To remarkably improve the sound-absorbing effect in a high-frequency region by using a concrete having a specific gravity smaller than a specific level and compounding the concrete with an artificial lightweight coarse aggregate having specific gravity and water-absorption smal...

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Bibliographische Detailangaben
Hauptverfasser:	HAYANO HIROYUKI, ISHIDA SATOSHI, OKAMOTO YUKIHISA, TOCHIGI TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ARTIFICIAL STONE BUILDING CEILINGS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS LIME, MAGNESIA METALLURGY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS REFRACTORIES ROOFS SLAG SOUND-PRODUCING DEVICES TREATMENT OF NATURAL STONE WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To remarkably improve the sound-absorbing effect in a high-frequency region by using a concrete having a specific gravity smaller than a specific level and compounding the concrete with an artificial lightweight coarse aggregate having specific gravity and water-absorption smaller than respectively specific levels and a crushing strength higher than a specific level. SOLUTION: The objective sound-absorbing material is a lightweight concrete compounded with an artificial lightweight aggregate. The specific gravity of the concrete is =30 N/mm2 and the artificial lightweight coarse aggregate has a water-absorption of