id	keyword
fis-1803	fly ash
fis-1803	layer
fis-1803	layer particles
fis-1803	raw
fis-1803	ash particles
fis-1803	cement
fis-1803	doi
fis-1803	fig
fis-1803	specimens
fis-1803	strength
fis-1803	size
fis-1803	coal
fis-1803	samples
fis-1803	water
fis-1803	properties
fis-1803	concrete
fis-1803	chemical
fis-1803	volume