FIELD: chemistry.
SUBSTANCE: method comprises, in a standard sample and analysed sample of a bitumen-polymer composition, measuring effective viscosity at temperature t=20°C, t=80°C and t=150°C and shear rate Dr=5.56 s-1, Dr=11.1 s-1 and Dr=16.67 s-1, τ=5.0 s, τ=15.0 s, τ=30.0 s after the beginning of application thereof; and predetermining confidence intervals of relative deviations of the values of effective viscosity of the standard bitumen-polymer composition and a set of quality parameters, which corresponds to the processing instructions for said standard product; the method of determining confidence intervals of relative deviations of the values of effective viscosity Δηef, determined by expert evaluation methods, is reduced in a general form to calculation of its relative change based on a given ratio with subsequent formation of a confidence interval of its deviation for the given production conditions. The value Δηef is calculated based on the obtained experimental values of effective viscosity of the standard bitumen-polymer composition, and control of quality parameters of the analysed bitumen-polymer composition is carried out by comparing values of the obtained relative changes of effective viscosity of the analysed bitumen-polymer composition Δηef with corresponding confidence intervals of relative deviations of the effective viscosity of the standard bitumen-polymer composition, obtained under the same analysis conditions; based on the comparison results, a conclusion is made on the conformity of the analysed bitumen-polymer composition to properties of the standard bitumen-polymer composition, particularly if the obtained values of the relative change of the values of effective viscosity Δηef of the analysed bitumen-polymer composition twice successively enter the corresponding different confidence intervals of its relative change for the standard bitumen-polymer composition for partially or completely different conditions of obtaining initial values of effective viscosity, used to calculate Δηef and form intervals for its confidence deviation for the standard bitumen-polymer composition, the analysed bitumen-polymer composition has a set of physical and mechanical properties which correspond to the process instruction for said product, and is a standard bitumen-polymer composition; if the obtained value of change of effective viscosity Δηef of the analysed bitumen-polymer composition does not enter the available confidence interval of its change for the standard bitumen-polymer composition, a conclusion is made on the non-conformity of the analysed bitumen-polymer composition to properties of the standard bitumen-polymer composition on the set of physical and mechanical properties.
EFFECT: high accuracy, reliability and efficiency, and easy control.
4 ex, 11 tbl
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Authors
Dates
2015-11-20—Published
2014-07-14—Filed