id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fis-4033	Zhang, Yao; Ma, Wei-Hua; Kang, Hong-Zhen; Li, Qiang	Fracture behaviour of concrete with different replacement rates of iron tailings sand based on double-K criterion 	2023	15	.pdf	application/pdf	6818	320	58	[5] prepared shotcrete by replacing natural sand with iron tailings sand in equal proportions; following a series of tests, iron tailings sand concrete that met the required strength and engineering specifications was obtained. Microscopic test results: the SEM images show that the interface transition zone (ITZ) of iron tailings sand concrete is denser and the bonding state is better, and the MIP show that the addition of iron tailings sand can refine the pore size, reduce large pores and increase small pores.	cache/fis-4033.pdf	txt/fis-4033.txt