Laboratory testing of creep of base and polymer modified road bitumens

摘要

Research work has been executed using specially prepared test stand, which contains a standard ductilometer. Conditions of the tests were as follows: temperature: T = 15℃, total specimen length: 1 = 150 mm, maximal specimen elongation: l_1 = 10 mm, stress levels: σ= 2,5/25 kPa. Road bitumens D70 and D200 (base bitumens) and 9 binders modified in laboratory with elastomers SBS, SIS and SBR were the objects of the tests. The purpose of the research work was searching for influence of type and content of selected polymers addition on changes of Theological properties of PmB during creep under static loading.