[Retracted] Processing and Characterization of Novel Bio-Waste Hybrid Brick Composites for Pollution Control

Table 10

Minimum weighted normalized sound level difference (Dn, w) for building walls according to (DL 129/2002).

Sample	Dn, w ≥ (dB)	Dn, w—3≥ (dB)
BA-1	42	38
BA-2	40	37
BA-3	38	35
BA-4	35	32