▎ 摘　　要

NOVELTY - Inter-floor noise prevention system of house comprises a sound absorbing plate installed on an upper surface of the concrete slab, a first sound wave vibration blocking plate (120) installed on an upper surface of the sound absorbing plate (110), a porous lightweight mineral layer installed on the upper surface of the first acoustic vibration damping plate and containing zeolite and bentonite, a second sound wave vibration blocking plate (140) installed on the upper surface of the porous lightweight mineral layer, a shock-absorbing and anti-vibration plate (150) installed on an upper surface of the second sound wave vibration isolation plate, and a mortar layer installed on an upper surface of the shock-absorbing and anti-vibration plate and having hot water pipes for heating. The floor finishing material is installed on the upper surface of the mortar layer. USE - The system is useful for preventing noise generated in the upper floor from being transmitted to the lower floor through the concrete slab. ADVANTAGE - The system: has improved installation structure; blocks light impact noise and heavy impact sound; is lightweight which reduces the applied load on the floor slab; and provides insulation and waterproofness. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional structural view inter-floor noise prevention system of house having improved installation structure (Drawing includes non-English language text). 110Sound absorbing plate 120First sound wave vibration blocking plate 130Hollow fiber nonwoven fabric layer 140Second sound wave vibration blocking plate 150Shock absorbing and anti-vibration plate