Infrastructure Engineering - Research Publications
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ItemStructural Health Monitoring of Bridges Using Advanced Non-destructive Testing Technique(Springer, Singapore, 2020-01-01)This paper presents an integrated framework for structural health monitoring of bridges by using advanced non-destructive testing (NDT) technique in conjunction with computational modelling. First, the structural characteristics of the Eltham Trestle Bridge under train loading were monitored using the combination of the 3D optical measurement system and IBIS-S. The results demonstrate that, in conjunction with computational modelling, the NDT can capture the structural health conditions of the bridge by analysing the natural frequencies and deformation profiles of the critical members of the bridges. Then, the developed framework also takes into account the impact of extreme events (e.g. truck impacts and earthquakes) by using a reliability-based model. Finally, using the Montague Street Bridge as a case study, it shows that proposed framework has the capability of predicting the residual life of a bridge subject to both progressive deterioration and extreme events throughout its service life.
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ItemUrban Analytics Data Infrastructure: Critical SDI for Measuring and Monitoring The National and Local Progress of SDGs(CRC Press - Taylor & Francis Group, 2020-01-01)This chapter describes an innovative Spatial Data Infrastructure to support urban analytics and urban research capabilities focused on Australian cities, called Urban Analytics Data Infrastructure (UADI). The UADI provides opportunity for multi-disciplinary, and cross-jurisdictional analytics. The chapter highlights the UADI capabilities to be adopted for deriving the SDG indicators as a response to the UN-GGIM strategic framework 2017 { 2021 technical requirements.
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ItemInfrared Thermography for Detecting Subsurface Defects of Concrete Structures(Springer Singapore, 2020-12-23)Delamination is one of the serious types of deterioration in reinforced concrete structures. It could cause concrete spalling, exposed steel bars, and ultimately affects the structural integrity of concrete structures. Infrared thermography (IRT) is a non-destructive technique which could potentially detect the delamination by capturing thermal contrast (∆T) on concrete surface caused by the heat flow disruption within the concrete due to subsurface anomalies. However, the optimum time and environmental conditions for IRT data collection are still unclear. In this study, an experimentally validated numerical model was developed to investigate the effect of a range of environmental conditions and defect characteristics on the IRT inspection outcomes. The results show that, under direct solar irradiation, the total heat flux input plays an important role in the development of thermal contrast ∆T instead of flux rate. Furthermore, delamination depth and size are two critical parameters that affect IRT results.
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ItemChapter 37: Heat Pumps(CRC Press, 2020-07-29)In this second volume, Managing Air Quality and Energy Systems, the reader is introduced to the general concepts and processes of the atmosphere, with its related systems. Heat pumps capture heat energy from low-grade heat sources such as ambient air, ground, and waste heat streams and upgrade to a higher temperature level for useful applications. This entry includes a brief history, fundamentals, classifications, applications and performance parameters of heat pumps. Working principles of the thermoelectric heat pump, the absorption heat pump, the gas compression heat pump and the vapor compression heat pump are explained. Performance parameters of the heat pump systems (coefficient of performance, energy efficiency ratio, primary energy ratio, and ambient energy fraction) are presented. The short-term and long-term greenhouse gas saving potential for the use of heat pumps are discussed.
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ItemNo Preview AvailableGreen Buildings in Makassar, Indonesia(Springer Nature, 2020)Indonesia has one of the world’s largest populations, which creates a demand for buildings. Construction and operation of buildings have impacts on environment. To create sustainable cities, Indonesia applied the smart cities concept and selected Makassar as one of three role model cities. This chapter explores the current situation in Makassar with respect to green building adoption, the challenges faced and opportunities in market transformation. The Green Building Council of Indonesia (GBCI) in Makassar is heavily involved with market transformation for green building practices and has four main activities: market transformation, training and education, green building certification and stakeholder engagement. GBCI has developed the GREENSHIP rating tool, an assessment system covering categories associated with the green building concept as it applies to Indonesia. The embracing of the green building concept, however, is still low in Makassar. Market transformation is a challenging task, and there is still a lack of formal education programmes and courses available to architects, engineers and the construction industry to drive the transformation. The initial higher cost of green building presents as a major barrier to the uptake of green building even though these costs are mitigated after a period of 4–5 years through a reduction in operational costs. Government regulations that support green building practices and education of the community about the benefits of green building may support/improve uptake of green building.
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ItemUnderstanding the Green Building Industry in Thailand(Springer, 2020)Promoting green building has become a global trend to improve resource efficiency and well-being of societies. The aim of this study is to systematically investigate the key aspects of the green building industry in Thailand (i.e., critical successful factors, key green technologies, and barriers) and to provide a sound basis for deeply understanding the drivers of the industry. Based on a survey of consultants, architects, and engineers, the results show that critical success factors of green building are mainly related to competence of project participants, integration of project team, technical and management innovation, external environment, and project characteristics. The analysis of green technical capabilities demonstrates that project participants should emphasize improving technical skills in green building, use of green materials, and familiarity with green building rating systems. Barriers to green building mainly arise from financial pressure, technical limitation, and inadequate promotion. The findings can help project participants to adopt appropriate strategies in boosting green building in emerging markets of developing countries. Future studies should focus on levering the demand of the market, integrated green technology innovation, and management measures at project, organizational, and industrial levels.