Effect of Conductive Filler Size and Type on Thermal Properties of Asphalt Mixtures

Author(s):  
Hai V. Vo ◽  
D. W. Park ◽  
W. J. Seo ◽  
J. S. Im
2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Byong Chol Bai ◽  
Dae-Wook Park ◽  
Hai Viet Vo ◽  
Samer Dessouky ◽  
Ji Sun Im

This paper investigates the thermal properties of asphalt mixtures modified with conductive fillers used for snow melting and solar harvesting pavements. Two different mixing processes were adopted to mold asphalt mixtures, dry- and wet-mixing, and two conductive fillers were used in this study, graphite and carbon black. The thermal conductivity was compared to investigate the effects of asphalt mixture preparing methods, the quantity, and the distribution of conductive filler on thermal properties. The combination of conductive filler with carbon fiber in asphalt mixture was evaluated. Also, rheological properties of modified asphalt binders with conductive fillers were measured using dynamic shear rheometer and bending beam rheometer at grade-specific temperatures. Based on rheological testing, the conductive fillers improve rutting resistance and decrease thermal cracking resistance. Thermal testing indicated that graphite and carbon black improve the thermal properties of asphalt mixes and the combined conductive fillers are more effective than the single filler.


2007 ◽  
Vol 124-126 ◽  
pp. 1079-1082 ◽  
Author(s):  
Sung Ryong Kim ◽  
Dae Hoon Kim ◽  
Dong Ju Kim ◽  
Min Hyung Kim ◽  
Joung Man Park

Thermal properties of PEEK/silicon carbide(SiC) and PEEK/carbon fiber(CF) were investigated from ambient temperature up to 200°C measured by laser flash method. Thermal conductivity was increased from 0.29W/m-K without filler up to 2.4 W/m-K with at 50 volume % SiC and 3.1W/m-K with 40 volume % carbon fiber. Values from Nielsen theory that predicts thermal conductivity of two-phase system were compared to those obtained from experiment.


2013 ◽  
Vol 331-332 (1) ◽  
pp. 189-196 ◽  
Author(s):  
Anastasios Patsidis ◽  
Stavroula N. Georga ◽  
Christoforos A. Krontiras ◽  
Georgios C. Psarras ◽  
Athanasios Kanapitsas ◽  
...  

2015 ◽  
Vol 74 ◽  
pp. 25-31 ◽  
Author(s):  
Alice Bonati ◽  
Sara Rainieri ◽  
Giovanna Bochicchio ◽  
Barbara Tessadri ◽  
Felice Giuliani

2018 ◽  
Vol 280 ◽  
pp. 264-269
Author(s):  
Heng Chun Wei ◽  
Teh Pei Leng ◽  
Yeoh Chow Keat

This work reports on mechanical and thermal properties of a novel polymer blend. Blends were prepared by mixing silicone rubber with diphenyl – 4,4 – dissocyanate in different ratios. Graphene nanoplatelets was added as conductive filler to improve the electrical conductivity of the blends. The mechanical properties, including tensile and tear performances were measured by a material testing system. The thermal stability of the blends was measured by thermogravimetric analysis. Incorporation 20 vol.% of silicone rubber can help to improve the thermal stability of the blend, meanwhile optimum mechanical properties of the blends is achieved.


2016 ◽  
Vol 115 ◽  
pp. 327-335 ◽  
Author(s):  
Abdushafi Hassn ◽  
M. Aboufoul ◽  
Y. Wu ◽  
A. Dawson ◽  
A. Garcia

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