We are pleased to announce that our research work published on Constr Build Mater, 48, (2013), P:59–66 get cited by the Scientific Reports:
Rubber-like Quasi-thermosetting Polyetheramine-cured Epoxy Asphalt Composites Capable of Being Opened to Traffic Immediately, fide it on nature.com.
Abstract: This paper reports the facile preparation, mechanical performance and linear viscoelasticity of polyetheramine-cured rubber-like epoxy asphalt composites (EACs) with different asphalt contents. Compared with previous EACs prepared via complex chemical reactions and time-consuming high-temperature curing, the EACs reported here were obtained by using a compatible, bi-functional polyetheramine and a simple physical co-blend process, which make the EACs feasibly scalable for production at a lower cost. The EACs were cured for 1 h at 160 °C and 3 d at 60 °C; therefore, these composites can be opened to traffic immediately. The EACs have a much greater temperature stability than common thermoplastic polymer-modified asphalt composites from −30 °C to 120 °C, but their complex shear moduli at higher temperatures slightly decrease instead of remaining constant when temperatures are greater than 80 °C, especially for the higher asphalt content composites; that is, these composites are quasi-thermosetting. Wicket plots illustrate that the EACs reported here are thermorheological simple materials, and the master curves are constructed and well-fitted by generalized logistic sigmoidal model functions. This research provides a facile, low-cost method for the preparation of polyetheramine-cured EACs that can be opened to traffic immediately, and the concept of quasi-thermosetting may facilitate the development of cheaper EACs for advanced applications.
The international research conferences, speeches, talks and visiting that we get involved in 2016:
6月5-8日，Beijing, the National Convention Center, First Transport Research Congress, Oral Presentation；
Posted in 新闻News
Abstract: The effect of Layered Double Hydroxides (LDHs) additives as VOC emission inhibitor for bituminous materials was studied in this research. Ion histogram of volatile compounds from bituminous material was obtained by means of Thermogravimetry-Mass Spectrometry analysis. Results obtained for the pure bitumen and LDHs-modified bitumen show that LDHs modifier has the potential to reduce the volatile speed and amount of VOC emissions. The reduction effect varies on different molecules or compounds. The reduction effect on volatile speed is significant with smaller molecules. The effect of LDHs on the volatile speed of more carcinogenic volatile compounds shows that the reduction in speed is significantly bigger on dichloroethane and naphthalene than that on normal octane. The study findings indicate that four percent of LDHs is an optimum in achieving the best emission reduction of VOC for the investigated bituminous material.
Keywords: Volatile organic compound; Bituminous material; Polycyclic Aromatic Hydrocarbon; Layered Double Hydroxides
P.Q Cui, S.P. Wu, Y. Xiao* (Corresponding Author), M. Wan, P.D. Cui. Inhibiting Effect of Layered Double Hydroxides on the Emissions of Volatile Organic Compounds from Bituminous Materials, Journal of Cleaner Production, (2015), PDF Download, Find it from ScienceDirect.
Abstract: Solar energy is undoubtedly the environment friendly and inexhaustible energy resource for humans. The concept of hydronic asphalt pavement (HAP) is an emerging renewable energy technology, which provides an interesting method for solar energy utilization. The innovation of HAP is to mitigate a series of realistic problems related to the asphalt pavement as well as the depletion of fossil energy resource. Fluid circulating through the pipes network imbedded in the asphalt pavement can capture the solar energy and store for later use. This paper summaries the major achievements of the existing literatures about the HAP and gives some proposals for further investigations. Studies have confirmed the feasibility of harvesting solar energy, cooling the pavement, snow melting/deicing as well as air conditioning of buildings by applying innovation technologies on asphalt pavement. As seasonal energy storage technology is relatively mature at present, most of the literatures reviews focus on the influences of variables associated with system behavior as well as the heat transfer processes during snow melting and solar energy collection. Future work should aim to do more urgent issues involved with HAP application: construction technology, maintenance technology, and long-term performance. Solving these problems can strengthen the theoretical and practical understanding of HAP, and lead to more extensive applications.
Keywords: Hydronic asphalt pavement (HAP); Renewable energy; Solar energy collector; Snow melting
S.P. Wu, P. Pan, Y. Xiao (Corresponding Author), G. Liu. A review on hydronic asphalt pavement for energy harvesting and snow melting, Renewable & Sustainable Energy Reviews, Volume 48, August 2015, Pages 624–634. IF=5.510. PDF Download.
Abstract: Using asphalt pavement as a solar collector is a technology of increasing interest in China. Researchers have pointed out that the heat quality of the coolant medium needed further investigation for inter-seasonal storage, though the energy potential of an asphalt solar collector was considerable. In this paper, a three-dimensional unsteady model is developed to investigate the heat-collecting properties of asphalt solar collector at typical Chinese summer time. The temperature rise of outlet water (ΔT) is used as the indicator of heat quality. The results from a big-scale slab of 4 m × 4 m show that ΔT reaches over than 10°C, while the asphalt pavement is cooled down effectively. In addition, the higher the ambient temperature is, the better the heat-collecting properties of asphalt solar collector achieves. It can be concluded that the heat-collecting properties of asphalt solar collector are good enough to provide high-quality heat under certain conditions.
Keywords: Asphalt pavement, Solar collector, Heat-collecting properties, Three-dimensional unsteady model, Quality of collected heat
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.