Structural Glass Systems under Fire: Overview of Design Issues, Experimental Research, and Developments

Table 1

Chemical and physical properties of SLS and BS glass types (at room temperature), in accordance with [1].

Chemical properties				Physical properties
		SLS	BS			SLS	BS
Silica sand	SiO2	69–74	70–87	Density	ρ (kg/m^3)	2500	2200–2500	Mechanical
Lime (calcium oxide)	CaO	5–14	—	Young’s modulus (MOE)	E (GPa)	70	60–70
Soda	Na2O	10–16	0–8	Poisson’s ratio	ν	0.23	0.2
Boron oxide	B2O3	—	7–15	Tensile resistance	σkt (MPa)^a	45–120	45–120
Potassium oxide	K2O	—	0–8	Compressive resistance	σkc (MPa)^b	1000	1000
Magnesia	MgO	0–6	—	Coefficient of thermal expansion	αT (10^−6C^−1) (T < Tg)	9	3.1–6.0 (class 1 to 3)	Thermal
Alumina	Al2O3	0–3	0–8	Specific heat capacity	cp (Jkg^−1C^−1)	720	800
Others	—	0–5	0–8	Thermal conductivity	λ (Wm^−1C^−1)	1	1
				Emissivity (corrected value)	ε	0.837	0.837
				Transition temperature	Tg (°C)	530	530
				Maximum thermal stress	σT (MPa)^a	40–250	40–250

^aDepending on the treatment of glass; ^btheoretical value, in accordance with [29].