Effects of compaction temperature on the volumetric properties and compaction energy efforts of polymer-modified asphalt mixtures

2018 ◽  
Vol 33 (1) ◽  
pp. 146-154 ◽  
Author(s):  
Kyoungchul Kim ◽  
Myungook Kang
2011 ◽  
Vol 255-260 ◽  
pp. 3249-3253
Author(s):  
Hui Dou ◽  
Bo Li ◽  
Wen Hong Ren ◽  
Qiang Wang

The volume parameters of asphalt mixtures is sensitive to compaction temperature. Warm-mix Asphalt (WMA) was green paving technology, which can allow paving at lower temperature. In this study, a laboratory investigation of the volumetric properties of WMA with Sosabit was carried out by the method of Marshall. And the effect of different asphalt such as modified asphalt such as Kalamay, Shell, SK and Kalamay 90# asphalt on volumetric properties of WMA at different temperature was analyzed. Based on this, the minimum compaction temperatures of WMA with Sosabit was proposed. The result showed that bulk density and VFA are decreasing and air voids and VMA increasing with the decreasing temperature; the volume indicators to meet the regulatory requirements when the temperature is 170°C~143°C for three WMA-SBS temperature and 150°C~115°C for WMA-90#; compaction temperatures of modified asphalt and asphalt mixture after adding Sosabit can lower up to 133°C and 118°C respectively.


Author(s):  
Eslam Magdy Mohammed Deef-Allah ◽  
◽  
Ahmed Mohamady ◽  

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2434
Author(s):  
Laura Moretti ◽  
Nico Fabrizi ◽  
Nicola Fiore ◽  
Antonio D’Andrea

In recent years, nanotechnology has sparked an interest in nanomodification of bituminous materials to increase the viscosity of asphalt binders and improves the rutting and fatigue resistance of asphalt mixtures. This paper presents the experimental results of laboratory tests on bituminous mixtures laid on a 1052 m-long test section built in Rome, Italy. Four asphalt mixtures for wearing and binder layer were considered: two polymer modified asphalt concretes (the former modified with the additive Superplast and the latter modified with styrene–butadiene–styrene), a “hard” graphene nanoplatelets (GNPs) modified asphalt concrete and a not-modified mixture. The indirect tensile strength, water sensitivity, stiffness modulus, and fatigue resistance of the mixtures were tested and compared. A statistical analysis based on the results has shown that the mixtures with GNPs have higher mechanical performances than the others: GNP could significantly improve the tested mechanical performances; further studies will be carried out to investigate its effect on rutting and skid resistance.


2011 ◽  
Vol 23 (2) ◽  
pp. 131-137 ◽  
Author(s):  
Haoran Zhu ◽  
Lu Sun ◽  
Jun Yang ◽  
Zhiwei Chen ◽  
Wenjun Gu

2009 ◽  
Vol 614 ◽  
pp. 289-294 ◽  
Author(s):  
Guo Jun Zhu ◽  
Shao Peng Wu ◽  
Ran Liu ◽  
Lei Zhou

The effects of aging on the fatigue property of polymer modified asphalt mixtures are investigated in this paper. Two kinds of aging procedures are adopted for the aging of specimens prepared with polymer modified asphalt mixtures. One is the short-time aging which means that the hot asphalt mixtures was heated in the oven for 4 hours at 135°C before compacted; The other called natural aging, with the original specimen exposed in the sunlight and subjected to the rain and temperature change for 3, 6 and 9 months. Four-Point Bending Test was conducted to evaluate fatigue properties of aged asphalt mixtures at 15°C compared with the original specimens. Test results indicate that the fatigue line of aged specimens have the same tendency as the original asphalt mixtures. However, the life of aged specimen is decreased significantly when compared with the original ones, especially of the natural aged specimens.


Author(s):  
Noor Moutaz Asmael ◽  
◽  
Mohanned Q. Waheed ◽  
Ahmed Subhi Abdaljabbar ◽  

2010 ◽  
Vol 11 (4) ◽  
pp. 899-915 ◽  
Author(s):  
Antonio Montepara ◽  
Elena Romeo ◽  
Bjorn Birgisson ◽  
Gabriele Tebaldi

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