Peculiarities of bitumen testing methods

Bitumen as a construction material is extremely widespread in hydraulic engineering and road construction. has wide variety of features useful properties, which allowed it to reach leading level among other binder building materials. The article presents the peculiarities laboratory testing bitumen. Step by step technique bitumen on ring-ball device ductilometer disclosed. importance quality control justified. results obtained showed absence deviations from normative values. And reliability accuracy are reached due use an analytical approach taking into account risks arising during tests. presented means "bow-tie" methodology, main advantages analysis reasons for risk occurrence, determination decisions their elimination.