For my research activities and publications, please refer to Xiao Research.
Shaopeng Wu, Pan Pan, Yue Xiao (Corresponding Author), A review on hydronic asphalt pavement for energy harvesting and snow melting, Renewable & Sustainable Energy Reviews, Accepted. IF=5.510
Yue Xiao (Corresponding Author), Yefei Wang, Shaopeng Wu & Mingwei Yi, Assessment of Bonding Behaviours between Ultrathin Surface Layer and Asphalt Mixture Layer Using Modified Pull Test, Journal of Adhesion Science and Technology, Published online. IF=1.091
P.Q.Cui, S.P. Wu, Y. Xiao* and H.H. Zhang, Experimental study on the reduction of fumes emissions in asphalt by different additives, Materials Research Innovations, Volume 19, Issue S1 (April, 2015), pp. S1-158-S1-161. IF=0.473, Open Access.
B. Li, S.P. Wu, Y. Xiao* and P. Pan, Investigation of heat-collecting properties of asphalt pavement as solar collector by a three-dimensional unsteady model, Materials Research Innovations, Volume 19, Issue S1 (April, 2015), pp. S1-172-S1-176. IF=0.473, Open Access.
Here is one latest research tip: ScienceDirect Top25 certificates. Since 2004, the Top25 service has provided quarterly lists of the 25 most downloaded articles on ScienceDirect – the world’s largest research publication platform. This free service helps thousands of specialists pinpoint those must-read articles in their field.
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P. Pan, S.P. Wu, Y. Xiao (Corresponding Author), P. Wang, X. Liu. Influence of graphite on the thermal characteristics and anti-ageing. Construction and Building Materials, Volume 68, P:220–226.
P.Q. Cui, S.P. Wu, Y. Xiao (Corresponding Author), H.H. Zhang. Study on the deteriorations of bituminous binder resulted from volatile. Construction and Building Materials, Volume 68, P:644–649.
P.Q. Cui , S.P. Wu, F.Z. Li, Y. Xiao (contributed equally), H.H. Zhang. Investigation on Using SBS and Active Carbon Filler to Reduce the VOC Emission from Bituminous Materials. Materials, 7(9), P:6130-6143.
ZW. Chen, Y. Xiao, L. Pang, W.B. Zeng, S.P. Wu. Experimental assessment of flue gas desulfurization residues and basic. Fatigue & Fracture of Engineering Materials & Structures, Volume 37, Issue 11, P:1242-1253.
X. Liu, S.P. Wu, L. Pang, Y. Xiao, P. Pan. Fatigue Properties of Layered Double Hydroxides Modified Asphalt and Its Mixture. Advances in Materials Science and Engineering, Volume 2014, Article ID 868404.
P. Pan, S.P. Wu, F.P. Xiao, L. Pang, Y. Xiao. Conductive asphalt concrete: A review on structure design, performance, and practical applications. Journal of Intelligent Material Systems and Structures, published online.
Z.W. Chen, J. Xie, Y. Xiao, J.Y. Chen, S.P. Wu. Characteristics of bonding behavior between basic oxygen furnace slag and asphalt binder. Construction and Building Materials, Volume 64 P:60-66.
The frequent question comes up in a discussion of coal tar sealants is “what about our airport and the Federal Aviation Authority (FAA)? Don’t we have to use coal tar sealants?” The short answer is “no,” but read on if you want to know why.
This misunderstanding is so pervasive, that some have even stated that airports might lose their federal funding unless they use coal tar. While I won’t get into the politics of procurement, it is safe to say that not only do airports around the country use other materials besides coal tar sealants, but many have been looking for alternatives for a very long time.
The reason that coal tar sealants have been historically used at airports is their fuel resistance. If you remember your chemistry class taught you that “like dissolves like,” then you’ll understand that asphalt (a petroleum by-product) is damaged by fuel (a petroleum by-product) leaks from aircraft. Airport can’t afford to have deteriorating pavement both for structural strength and also to minimize any debris on the field that might get sucked up in an engine.
However, there are problems with coal tar sealants and fuel resistance and it has nothing to do with environmental or human health issues. Several sources cite pavement damage when coal tar sealants crack and allow jet fuel to sit in the cracks and deteriorate the pavement. The first entitled “Fuel Resistant Sealers and Binders for HMA Airfield Pavements (2009),” is a study of fuel resistant surface treatments. It says that differential expansion and contraction of a coal tar sealants leads to cracking (p.1). The study, while not approved by the FAA, was funded by the FAA.
The second source is the Army Corps of Engineers that found this same cracking phenomenon. This report is: “Rejuvenators, Rejuvenator/Sealers, and Seal Coats for Airfield Pavements (2003).”
When the City of Austin passed the nation’s first coal tar sealcoat ban, language was included that gives the airport an out if they couldn’t find a suitable product to replace coal tar at their most critical location, the aircraft parking areas. This is where a lot of fuel drips from the planes and fuel resistance is critical. This is a VERY small percentage of the area sealed at the airport.
Since then the FAA has done research and has found products that can stand up to fuel drips. Several sealants were found to perform well.
Recently hot mix asphalt designs, dubbed “FRA” or “fuel resistant asphalt,” have been used at several airports. So instead of being dependent on a surface treatment to protect an asphalt surface, the asphalt pavement is modified to itself be fuel resistant. How well does that work? Well enough that the military and the FAA are looking include this in their standard specifications.
Other airports around the country have used alternatives to coal tar sealants. The San Francisco Airport, the John Wayne Airport (Orange County, CA) successfully used a fuel resistant product as well. More on this particular product can be found at this link.
Since 2005 the Austin-Bergstrom International Airport has been using only asphalt-based products without any loss in FAA support.
So contrary to what you might hear, there are suitable alternatives to coal tar sealants being used today at airports around the country. All without any loss in funding or support from the FAA.