id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajema-282	Abdulhamidova Hilola Sherzod qizi; Chorieva Nigora Barotaliyevna	Cements of Yesterday and Today: Concrete of Tomorrow	2023	3	.htm	application/pdf	1102	71	21	Portland cement is the most widely used cement type, accounting for the majority of global cement production. Portland Cement: The Game Changer The invention of Portland cement in the 19th century revolutionized the construction industry.	cache/ajema-282.htm	txt/ajema-282.txt