The extended assessment of warm mix asphalts durability
Journal Title: Roads and Bridges - Drogi i Mosty - Year 2016, Vol 15, Issue 2
Abstract
The present paper outlines the results of tests performed on bituminous mixtures made by applying WMA, typical and modified bitumens. The mixtures AC 16 and SMA 8 were tested in respect to the compactibility (in a gyratory press and PBS cylinder compactor), water resistance, fatigue resistance, resistance to low-temperature cracking (through the TSRST method), complex modulus in a broad scope of frequencies, and crack propagation in the SCB apparatus. The impact of the technological and long-term ageing was taken into account. All tests were performed on the reference specimens and the specimens with WMA bitumens compacted at the temperature lower than the standard compaction temperature for a given mixture by 20°C and 40°C respectively. It has been proved that reducing the compaction temperature by 20°C is possible without deteriorating the mixture parameters. Moreover, in case of reducing that temperature by 40°C the majority of requirements have been met as well. The tests have confirmed in broad scope good functional characteristics of warm mix asphalts.
Authors and Affiliations
Wojciech Bańkowski, Renata Horodecka, Marcin Gajewski, Krzysztof Mirski
Keywords
Related Articles
- EP ID EP76950
- DOI 10.7409/rabdim.016.010
- Views 125
- Downloads 0
Dynamics of two-axle freight wagon with the UIC single-link suspension and forces exerted on the straight track
The paper is concerned with lateral dynamics of the two-axle freight wagon with the UIC single-link suspension, where dry friction is the only one way of damping oscillations. The mathematical model of the standard UIC s...
Reinforced concrete viaduct from beginning of the 20th century – microstructure analysis of 100 years old concrete
In the paper the history of a viaduct from Railway Warsaw - Kalisz and its present condition is described. The parabolic vaulted viaduct that was built for the Railway Warsaw - Kalisz, is probably one of two oldest concr...
Ocena stanu technicznego betonowych pokryw studni kanalizacji kablowej stosowanych w ciągach drogowych
Przedmiotem artykułu są prefabrykowane betonowe pokrywy studni kanalizacji kablowej, stosowane w ciągach dróg dla pieszych i pojazdów. Celem podjętej pracy było rozpoznanie stanu technicznego betonowych pokryw studni ka...
Rheological properties of road bitumen binders modified with SBS polymer and polyphosphoric acid
A commonly used method to improve the viscoelastic properties of road bitumens is polymer modification with styrene-butadiene-styrene (SBS). New binder modifiers are being searched for to provide a technically and econom...
Influence analysis of counterweight type used in static plate test on identified parameters of pavement courses and subgrade
The requirements of the current standards and specifications do not give clear guidance as to the design of counterweight during the static plate load test. For example, there are no detailed requirements concerning the...