Gassing Mechanism and Stability of Foamed Explosive Emulsions. Mining of minerals such as coal involves crushing the surrounding rock strata, or the mineral ore itself, with emulsion explosives. One of the most important properties determining suitability of an emulsion explosive to a particular mining operation is its velocity of detonation, which can be adjusted by varying the number and size of air bubbles distributed in the emulsion matrix. The present project aims to develop new ways of g ....Gassing Mechanism and Stability of Foamed Explosive Emulsions. Mining of minerals such as coal involves crushing the surrounding rock strata, or the mineral ore itself, with emulsion explosives. One of the most important properties determining suitability of an emulsion explosive to a particular mining operation is its velocity of detonation, which can be adjusted by varying the number and size of air bubbles distributed in the emulsion matrix. The present project aims to develop new ways of generating air bubbles, to gain fundamental understanding of the foaming mechanism in currently used gassing techniques, and to invent ways to stabilise large bubbles within the emulsion. The project will provide scientific underpinning for the development of a new range of emulsion explosives manufactured by Orica for Australian and international markets, maintaining the Orica's position as a leader in the field of emulsion explosives.Read moreRead less
Microstructural Analysis and Modelling of Copper Ore Agglomerates for Heap Leaching. The efficient extraction of valuable metals from mined ore can be considered as a problem of global concern as the world's reserves of such metals quickly diminish. For low grade copper ore, heap leaching has long been recognized as the most efficient mineral recovery procedure. This project aims to apply X-ray microtomography and micromechanical modelling to quantify the critical leaching properties of ore aggl ....Microstructural Analysis and Modelling of Copper Ore Agglomerates for Heap Leaching. The efficient extraction of valuable metals from mined ore can be considered as a problem of global concern as the world's reserves of such metals quickly diminish. For low grade copper ore, heap leaching has long been recognized as the most efficient mineral recovery procedure. This project aims to apply X-ray microtomography and micromechanical modelling to quantify the critical leaching properties of ore agglomerates and to formulate optimal heap leaching strategies. This will allow for better utilization of the Australia's low grade ore reserves. The procedures and methodologies to be developed will be applicable to other types of ore including gold, uranium and nickel.Read moreRead less
Role of Reactive Particles in Explosive Emulsions. Concentrated water-in oil explosive emulsions are widely used in the minerals industry because they are cheap, easily detonated and relatively safe to handle. Their explosive energy can be significantly increased when reactive particles are introduced into the emulsion matrix. To do this, the interaction between the solid, oil, and water phases needs to be optimised. This investigation will increase our basic understanding of the physical and ch ....Role of Reactive Particles in Explosive Emulsions. Concentrated water-in oil explosive emulsions are widely used in the minerals industry because they are cheap, easily detonated and relatively safe to handle. Their explosive energy can be significantly increased when reactive particles are introduced into the emulsion matrix. To do this, the interaction between the solid, oil, and water phases needs to be optimised. This investigation will increase our basic understanding of the physical and chemical interactions that occur between the particle and the oil-water interface, and develop a more efficient explosive that can be produced continuously on a commercial scale.Read moreRead less
High Strength Steel Protection Bollards. Terrorist attacks cost Australians much human grief and millions of dollars. Prevention of an attack is paramount. Passive road bollards are commonly used to stop a vehicle approaching and/or entering security sensitive infrastructure. Thin-walled tubes are used to manufacture such bollards. However there is a lack of knowledge about their behaviour, and in particular high strength alloy steel bollards, when subjected to impact loads. The investigators wi ....High Strength Steel Protection Bollards. Terrorist attacks cost Australians much human grief and millions of dollars. Prevention of an attack is paramount. Passive road bollards are commonly used to stop a vehicle approaching and/or entering security sensitive infrastructure. Thin-walled tubes are used to manufacture such bollards. However there is a lack of knowledge about their behaviour, and in particular high strength alloy steel bollards, when subjected to impact loads. The investigators will apply their extensive knowledge in thin-walled tubular structures to establish the most economical means of designing high strength bollards. This knowledge will be transferred into design standards and Australia's limited defence resources.Read moreRead less
Defining and developing a marine cadastre for Australia. Australia's ocean territories cover an area 1.5 times larger than the nation's land mass. Systems for the management and administration of land in a spatial context have been developed over many years but no such system exists for the nation's oceans. A marine cadastre aims at providing a comprehensive spatial data infrastructure and spatial analysis tools for the assessment, administration and management of rights, restrictions and respo ....Defining and developing a marine cadastre for Australia. Australia's ocean territories cover an area 1.5 times larger than the nation's land mass. Systems for the management and administration of land in a spatial context have been developed over many years but no such system exists for the nation's oceans. A marine cadastre aims at providing a comprehensive spatial data infrastructure and spatial analysis tools for the assessment, administration and management of rights, restrictions and responsibilities in the marine environment. The objective of this project is to investigate the issues and define the problems associated with the development of a marine cadastre, thereby providing the foundation for future research.Read moreRead less
Making better decisions about built assets: learning by doing. This research will assist the built environment professions and their clients to make better decisions about new developments through a novel 'learning by doing' approach. Used successfully in other fields such as natural resource management, this idea will capitalise on the large number of asset investments undertaken to benchmark original stakeholder intentions and aspirations against the reality of current performance. Decisions w ....Making better decisions about built assets: learning by doing. This research will assist the built environment professions and their clients to make better decisions about new developments through a novel 'learning by doing' approach. Used successfully in other fields such as natural resource management, this idea will capitalise on the large number of asset investments undertaken to benchmark original stakeholder intentions and aspirations against the reality of current performance. Decisions will be re-evaluated in the context of contemporary economic, social and environmental criteria to enable existing multi-criteria models to deliver more sustainable outcomes that are also feasible and in the national interest, and consequently minimise the industry's current exposure to future climate change.Read moreRead less
Regulation of large artery stiffness by endothelium-derived mediators and effects on the arterial pressure waveform. Stiffening of arteries is an important cardiovascular risk factor and increases with age, high blood pressure, high cholesterol and diabetes. Cells that line the blood vessels (endothelial cells), become damaged and this reduces the available amount of a dilator substance, nitric oxide, and increases the activity of a constrictor substance, endothelin-1. We have shown that nitric ....Regulation of large artery stiffness by endothelium-derived mediators and effects on the arterial pressure waveform. Stiffening of arteries is an important cardiovascular risk factor and increases with age, high blood pressure, high cholesterol and diabetes. Cells that line the blood vessels (endothelial cells), become damaged and this reduces the available amount of a dilator substance, nitric oxide, and increases the activity of a constrictor substance, endothelin-1. We have shown that nitric oxide regulates large artery stiffness and we believe that other endothelial mediators are also important regulators. Therefore, we aim to explore this in a series of studies. Regulation of stiffness of large arteries will improve treatment of age-related cardiovascular disease (eg isolated systolic hypertension)Read moreRead less
Embodied energy modelling of individual commercial buildings. This research will develop a method for modelling the energy embodied in individual commercial building construction. Construction material manufacturing emissions are well known in most industries, but the total embodied energy of the construction supply chain is difficult to model for individual buildings. For efficient commercial buildings, the embodied energy can represent up to 40 years of operational energy. The results will be ....Embodied energy modelling of individual commercial buildings. This research will develop a method for modelling the energy embodied in individual commercial building construction. Construction material manufacturing emissions are well known in most industries, but the total embodied energy of the construction supply chain is difficult to model for individual buildings. For efficient commercial buildings, the embodied energy can represent up to 40 years of operational energy. The results will be used to develop cost effective strategies for optimising the total life cycle energy of individual commercial buildings. This will in part improve the environmental performance of the Australian construction industry.Read moreRead less
Enhanced Analysis and Structural Design of Pavements - Virtual Laboratory for Advanced Pavement Design. The proposed research will lead to improved pavement engineering procedures, which will reduce the maintenance costs for future pavement projects, and will result in cost-effective and more reliable design of new pavements.
Closing the Gap in Pipe Condition Assessment using Hydro-Acoustic Waves. Worldwide, the deterioration of water distribution pipeline infrastructure is driving an unsustainable explosion in maintenance and repair costs. In collaboration with industry leader Detection Services, this project will develop new methods to detect pipe condition faults at a scale and precision not currently possible. The outcome will be an advanced, yet practical, technology that provides critical information on pipe co ....Closing the Gap in Pipe Condition Assessment using Hydro-Acoustic Waves. Worldwide, the deterioration of water distribution pipeline infrastructure is driving an unsustainable explosion in maintenance and repair costs. In collaboration with industry leader Detection Services, this project will develop new methods to detect pipe condition faults at a scale and precision not currently possible. The outcome will be an advanced, yet practical, technology that provides critical information on pipe condition using new innovative active hydro-acoustic signal generators and sensors, combined with state-of-the-art signal analysis methods. The unprecedented cost-effectiveness of the technology will ensure a broad use in the water industry for targeted and efficient action, creating jobs and saving costs.Read moreRead less