Author
Guoyang Lu
Other affiliations: Harbin Institute of Technology, RWTH Aachen University
Bio: Guoyang Lu is an academic researcher from Hong Kong Polytechnic University. The author has contributed to research in topics: Asphalt & Materials science. The author has an hindex of 14, co-authored 47 publications receiving 549 citations. Previous affiliations of Guoyang Lu include Harbin Institute of Technology & RWTH Aachen University.
Papers
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TL;DR: This review summarizes the state-of-the-art of these three technologies in pavement engineering in recent years and suggests possible developments for future pavement monitoring and analysis based on these approaches.
109 citations
TL;DR: In this paper, a new porous pavement material is developed by replacing natural aggregate with recycled ceramic aggregate and replacing bitumen with a bio-based polyurethane (PU) binder.
91 citations
TL;DR: In this article, the performance of polyurethane-bound pervious mixtures (PUPMs) was investigated and compared with conventional porous asphalt (PA), and the results showed outstanding compressive and tensile strength of PUPM due to the excellent adhesion properties between aggregate and PU binder.
78 citations
TL;DR: In this paper, the suitability of Poroelastic road surface (PERS) for urban roads in cold regions was explored, where both laboratory tests and numerical simulations were conducted to characterize the mechanical and functional performances of PERS using a conventional porous asphalt (PA) as reference.
75 citations
TL;DR: Results indicated that aging obviously increased the micro-surface roughness of bitumen, and the bitumen rheological behavior was closely related to its micro-mechanics, which resulted in raised content of carbonyl, sulfoxide, and aromatic ring functional groups.
Abstract: Engineering performance of asphalt pavement highly depends on the properties of bitumen, the bonding material to glue aggregates and fillers together. During the service period, bitumen is exposed to sunlight, oxygen and vehicle loading which in turn leads to aging and degradation. A comprehensive understanding of the aging mechanism of bitumen is of critical importance to enhance the durability of asphalt pavement. This study aims to determine the relations between micro-mechanics, chemical composition, and macro-mechanical behavior of aged bitumen. To this end, the effect of aging on micro-mechanics, chemical functional groups, and rheological properties of bitumen were evaluated by atomic force microscope, Fourier transform infrared spectroscopy and dynamic shear rheometer tests, respectively. Results indicated that aging obviously increased the micro-surface roughness of bitumen. A more discrete distribution of micromechanics on bitumen micro-surface was noticed and its elastic behavior became more significant. Aging also resulted in raised content of carbonyl, sulfoxide, and aromatic ring functional groups. In terms of rheological behavior, the storage modulus of bitumen apparently increased after aging due to the transformation of viscous fractions to elastic fractions, making it stiffer and less viscous. By correlation analysis, it is noted that the bitumen rheological behavior was closely related to its micro-mechanics.
64 citations
Cited by
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TL;DR: In this paper, the effects of using recycled concrete aggregate and pozzolanic materials as a partial replacement of natural coarse aggregate (NCA) and cement, respectively, on the mechanical and permeability properties of fiber-reinforced pervious concrete mixes were investigated.
149 citations
TL;DR: In this article, the authors provide a comprehensive review of the literature on each of these energy harvesting technologies, including information on the harvesting principle, prototype development, implementation efforts, and economic consideration for each harvesting technology.
125 citations
TL;DR: In this paper, the authors provide a comprehensive and in-depth literature review on the feasibility and the state-of-the-art repurposing waste plastics into asphalt pavement materials, such as acrylonitrile butadiene styrene (ABS), ethylene vinyl acetate (EVA), polycarbonate (PC), and polyurethane (PU).
119 citations
Journal Article•
TL;DR: In this article, the influence of capillary stresses on values of the low-amplitude shear modulus, G\do, was found to be greatest for the soils having the smallest effective grain diameter, D\d1\d0, and for the lowest external confining pressure, σ\do'
Abstract: Resonant column tests of five fine-grained cohesionless soils showed the influence of capillary stresses on values of the low-amplitude shear modulus, G\do. This infuence was found to be greatest for the soils having the smallest effective grain diameter, D\d1\d0, and for the lowest external confining pressure, σ\do’. The maximum capillary influence developed at degrees of saturation between 5% and 20% for the soils tested. For the soil with the smallest D\d1\d0 (= 0.0024 mm) the maximum G\do was about two times G\do\d(\dd\dr\dy\d) for σ\do’ = 14.2 psi (98 kN/m). This latter pressure would correspond roughly to 20 ft. (6.1m) of overburden of incompletely saturated soils. Therefore, it would be expected that capillarity would affect insitu shear wave velocity measurements required for the dynamic design of shallow footings, runways, or other structures supported by soil near the ground surface. An empirical expression was developed which permits corrections of the value of G\do, measured at a particular degree of saturation, to the degree of saturation expected in prototype conditions.
108 citations
TL;DR: In this paper, the authors investigated the durability and functional performance of Porous Polyurethane Mixture (PPM) as an alternative to Open-Graded Friction Course (OGFC) in porous pavements.
107 citations