Modified Bitumen Materials from Kazakhstani Oilfield

Table 2

Characteristics of bitumen.

Bitumen grade BND-90/130	Softening temperature (°C)	Penetration, 0.1 mm		Ductility (cm)		Elasticity at 25°C (%)
		25°С	0°С	25°С	0°С
Sample	44	97	50	95	0	13
According to the norms of ST RK 1373–2005; GOST 22245-90	No less than 43	91–130	No less than 28	No less than 65	4.0	—