id	keyword
brj-24484	cardboard
brj-24484	panels
brj-24484	et al
brj-24484	absorption
brj-24484	sound
brj-24484	article
brj-24484	density
brj-24484	properties
brj-24484	samples
brj-24484	composite
brj-24484	materials
brj-24484	doi
brj-24484	cardboard panels
brj-24484	fig
brj-24484	insulation