id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-6289	Ižvolt, Libor; Dobeš, Peter; Mečár, Martin	TESTING THE SUITABILITY OF THE EXTRUDED POLYSTYRENE (STYRODUR) APPLICATION IN THE TRACK SUBSTRUCTURE	2020	9	.pdf	application/pdf	4653	214	49	8 shows the dependence of the thickness of the crushed aggregate sub-ballast layer on the required value of the static deformation modulus Esi of the sub-ballast upper surface (Esbl) for the standard struc- ture of sub-ballast layers (sub-ballast layer of crushed aggregate only) and higher deformation resistance of the subgrade surface E0 =approx. Placing the XPS at the bottom of sub-ballast layers has several drawbacks, namely: • it must withstand significant traffic loads, • it is worn due to a considerable contact stress with the ballast bed material, • the track substructure may freeze from the side, especially in the case of a railway line in the em- bankment.	cache/ap-6289.pdf	txt/ap-6289.txt