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Zheng, Lina (author), Duan, Huabo (author), Liu, Gang (author)
Abstract only. Associated with the continuing increase of construction activities such as infrastructure projects, commercial buildings, and housing programs, China has been experiencing a rapid increase of construction and demolition (C&D) waste. Till now, the generation and flows of China’s C&D waste has not been well understood. This paper...
conference paper 2017
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Liu, Z. (author), Shao, J. (author), Tang, Y. (author)
An experimental study was carried out on the time-dependent mechanical and transport behaviors of the Callovo-Oxfordian (Cox) argillite, the geological barriers for high-level radioactive waste disposal in France. Six coupled one-step creep tests under the same confining pressure 6MPa and different deviatoric stresses were proposed to...
conference paper 2016
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Liu, Z. (author), Lacasse, S. (author), Nadim, F. (author), Gilbert, R. (author)
The safe bearing capacity for offshore shallow foundations has been traditionally assessed using working stress design (WSD) methods (e.g. the API RP 2GEO guideline). Other codes of practice such as the ISO standard strive to provide designs achieving a desired target reliability level in the form of the Load and Resistance Factor Design (LRFD)...
conference paper 2015
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Nie, X. (author), Zhang, J. (author), Huang, H. (author), Liu, Z. (author), Lacasse, S. (author)
In the past few years, random field theory has been increasingly used to model the inherent soil variability. The scale of fluctuation is one of the important parameters describing a stationary random field. In this study, the factors affecting an accurate estimation of the scale of fluctuation were studied with numerical experiments to show how...
conference paper 2015
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Liu, W.F. (author), Leung, Y.F. (author)
This paper investigates the spatial variability characteristics of geologic profiles, including variations in thickness of marine clay deposits and rockhead levels, based on borehole data obtained from four sites in Hong Kong. The numbers of boreholes are approximately 100 in two cases, while the other two cases comprise more than 300 boreholes...
conference paper 2015
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Liu, K. (author), Hicks, M.A. (author), Vardon, P.J. (author), Jommi, C. (author)
Piping has been attributed as a major cause of dam and embankment failures. Current national prediction models to predict piping use the hydraulic gradient between the upstream and downstream water levels as an indicator. They are deterministic and take no account of preferential pathways. However, piping usually initiates from a discrete...
conference paper 2015
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The behavior of particles in compressible turbulence has been seldom investigated to date despite its importance in many natural and industrial flows. Direct numerical simulations of particle-laden compressible isotropic turbulence are performed to study the preferential concentration of particles and the underling mechanisms. It turns out that...
conference paper 2015
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The drag reduction effect of a semi-circular riblet-structured surface in a turbulent boundary layer is experimentally investigated using the micro-pillar shear stress sensor MPS3. The MPS3 sensor is a novel tool for the quantitative measurement of the wall-shear stress distribution and possesses a high spatial and temporal resolution. The...
conference paper 2015
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Direct numerical simulations of natural convection in liquid metal within rectangular box heated uniformly from below with uniform strong vertical magnetic field are conducted. The main aim is to explore the possibilities and mechanisms of convection instabilities in such flows. The effects of parameter range on the flow structure, i.e....
conference paper 2015
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Cai, Y. (author), Liu, Z. (author)
According to the COLREGs, every Officer On Watch (OOW) shall at all times maintain a proper look-out. Among all the available means of look-out, sight is the most basic and commonly used one. OOWs always need to make a full appraisal of the situation and of the risk of collision by sight, including estimating the range and bearing. Unlike the...
conference paper 2013
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Sun, C. (author), Liu, S.L. (author)
In this study, we exploit the ?PIV (microscale particle image velocimetry) analysis to investigate the internal flow field of a dividing droplet in a bifurcating microchannel. Herein, droplets are generated by a flow focusing scheme and sent downstream toward an asymmetric bifurcation. In order to control the proportion of split droplets, we...
conference paper 2013
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Liu, Q. (author), Schlangen, H.E.J.G. (author), Van Bochove, G. (author)
Porous asphalt shows excellent performance in both noise reduction and water drainage. Although porous asphalt has these great qualities, its service life is much shorter (sometimes only half) compared to dense graded asphalt roads. Ravelling, which is the loss of aggregate particles from the surface layer, is the main damage mechanism of porous...
conference paper 2013
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Liu, Z. (author), Besseling, N.A.M. (author), Mendes, E. (author), Picken, S.J. (author)
Polyborosiloxanes (PBSs) are viscoelastic, transparent, colourless, self-healable polymer matrices, synthesized by reacting linear polydimethylsiloxanes (PDMSs) with boric acid (BA) above 150°C. BA takes part not only in cleaving the PDMS chains, but also contributes boronic-acid like moieties to the cleaved chain ends, which provide...
conference paper 2013
document
Tobón, L. (author), Chen, J. (author), Lee, J. (author), Yuan, M. (author), Zhao, B. (author), Liu, Q.H. (author)
Many system-level electromagnetic design problems are multiscale and very challenging to solve. They remain a significant barrier to system design optimization for a foreseeable future. Such multiscale problems often contain three electrical scales, i.e., the fine scale (geometrical feature size much smaller than a wavelength), the coarse scale ...
conference paper 2013
document
Fellows, R. (author), Liu, A. (author)
In almost 20 Years since Latham published the interim report ‘Trust and Money’ in which he asserted that there was too little of either in the UK construction industry, has anything changed? This paper addresses issues of what trust is, how it is created and its fragility, and progresses to examine how trust operates in the construction industry...
conference paper 2011
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Liu, J. (author), London, K.A. (author)
Housing supply is one of important components of the housing sector. Compared with an increasingly strong housing demand, the growth rates of total housing stock in Australia have exhibited a downward trend since the end of the 1990s whilst the significant adjustments in the Australian monetary policy were being implemented. This research aims...
conference paper 2011
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Liu, S. (author)
The United Kingdom (UK) government policy is increasingly directed at transforming the built environment to an environmentally sustainable one. The government, for example, has set a target for a reduction in carbon emissions by 80% by 2050 compared to 1990 levels. A large number of new policies and regulations are being introduced to minimise...
conference paper 2011
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Lu, W. (author), Liu, A. (author), Wang, H. (author), Wu, Z. (author)
While heated discussions have been directed towards various innovative procurement systems such as PPP, PFI, and BOT that carry the great expectation to help materialise the projects and deliver value to the society, a procurement system named agent-construction system (ACS or in Chinese Dai Jian Zhi) is being prevailing in China’s public...
conference paper 2011
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Liu, C.B. (author), Nithiarasu, P. (author)
A fully explicit characteristic based split (CBS) based artificial compressibility (AC) method and a semi-implicit CBS scheme, for viscoelastic flow over a circular cylinder placed in a rectangular channel are presented in this paper. In the explicit form the pressure equation is solved explicitly by introducing an artificial compressibility...
conference paper 2006
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Liu, Y. (author), Tang, Q. (author), Fox, R.O. (author)
Computational fluid dynamics (CFD) is a useful tool for modeling chemical reactors. However, because the design goals and expected outcomes are different than in "traditional'' CFD applications, chemical reactors require special attention to the treatment of chemical reactions, and heat and mass transfer. Here we provide an overview of the...
conference paper 2006
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