The mechanical properties, given by bitumen make an ideal waterproofing contribution to roof constructions, as well as to their ability to withstand significant structural movements.  Bitumen is known as a material, which retains properties over long periods, so it significantly contributes to a structure's durability and longevity.

 

Roofing oil asphalt is used in production of roofing materials. It is produced at Bitumen Unit vie continuous oxidation of black-oil vacuum distillation bottoms with atmospheric oxygen.

MAIN TECHNICAL PARAMETERS

DESCRIPTION

TYPES

GOST 9548-74

BNK 40/180

BNK 45/190

Needle penetration depth at 25°C, 0,1 mm

160-210

160-220

Melting point, °C

37-44

40-50

Solubility in benzene and chloroform, % min.

99,50

99,50

Weight alteration after heating, % max.

0,80

0,80

Needle penetration depth at 25°C in residue after heating, % of initial value, min.

60

60