Short-term and long-term ageing influence on modified bitumens resistance to low temperature cracking and fatigue cracking

Title: Short-term and long-term ageing influence on modified bitumens resistance to low temperature cracking and fatigue cracking
Author(s): P. Radziszewski, J. Pilat, R. Ziolkowski
Paper category : conference
Book title: Fifth International RILEM Conference on Reflective Cracking in Pavements
Editor(s): C. Petit, I.L. Al-Qadi and A. Millien
Print-ISBN: 2-912143-47-0
e-ISBN: 2912143764
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 501 - 510
Total Pages: 10
Nb references: 6
Language: English

Abstract: Paper presents investigation of visco-elastic properties of unmodified and modified with elastomer, plastomer and scrap rubber bitumen produced in Poland. Bitumens' properties were determined before ageing, after short-term (TFOT - Thin Film Oven Test) and long term (PAV - Pressure Ageing Vessel) ageing.
Efforts evaluating the low temperature and fatigue cracking resistance on the basis of laboratory bitumen and mineral-bitumen mixes tests were taken. The following tests were planned:
- softening point R&B,
- penetration in different temperature,
- force ductility test at different temperature with different elongation
speed (deformation work, maximum tensile force),
- Fraass breaking point,
- elastic recovery,
- bending beam rheometer test,
- Marshall test,
- indirect tensile test,
- the fatigue test.
On the basis of the first stage carried out research it was stated that there exists an significant correlation between parameters determining bitumen's properties in different stages of ageing (i.e. deformation work determined in force ductility test) and asphalt mixes fatigue life and stiffness modulus in function of temperature. Influence of modification stage on the change of bitumens ageing and bitumens resistance to low temperature and fatigue cracking resistance were estimated.

Online publication: 2004-04-15
Publication type : full_text
Public price (Euros): 0.00