Service Life Assessment of Historical Building Envelopes Constructed Using Different Types of Sandstone: A Computational Analysis Based on Experimental Input Data

Table 2

XRF chemical composition of tested materials.

Substance	SiO2	Al2O3	Fe2O3	CaO	MgO	K2O	P2O5	∑
Amount [mass %]
SK	97.45	1.870	0.368	0.035	0.071	0.090	—	99.887
SL	89.52	3.630	4.610	0.118	0.312	1.320	0.112	99.622
SZ	92.92	2.710	2.420	0.173	0.533	1.080	0.008	99.844