id	keyword
fis-2617	concrete
fis-2617	doi
fis-2617	hits
fis-2617	time
fis-2617	fracture
fis-2617	fracturing
fis-2617	monitoring
fis-2617	process
fis-2617	agent
fis-2617	cracking
fis-2617	specimen
fis-2617	cracks
fis-2617	rock