Failure Mechanisms of Roof Cladding under Fluctuating Wind Loads. Wind damage to low-rise buildings cause disruption to communities and result in economic losses. Improvements to the most vulnerable part (i.e. roof) will therefore have national benefits and associated economic benefits. Currently, roofing systems used in cyclonic areas are evaluated to DABM in the Northern Territory and to TR440 elsewhere, requiring the same product be tested under two different (and unsatisfactory) specificat ....Failure Mechanisms of Roof Cladding under Fluctuating Wind Loads. Wind damage to low-rise buildings cause disruption to communities and result in economic losses. Improvements to the most vulnerable part (i.e. roof) will therefore have national benefits and associated economic benefits. Currently, roofing systems used in cyclonic areas are evaluated to DABM in the Northern Territory and to TR440 elsewhere, requiring the same product be tested under two different (and unsatisfactory) specifications. This is due to the limited understanding of wind-induced fatigue of cladding. This project will provide the framework for understanding and minimizing cladding fatigue. A realistic single test will also reduce cost and result in better design systems.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
Long-term corrosion of offshore steel structures in near-stagnant seawater. This project investigates the seawater corrosion of structural steels under near-stagnant and possibly polluted conditions. Better understanding of long-term corrosion of structural steels in near-stagnant seawaters is needed to predict the safety of steel offshore structures such as the pods supporting wind and wave energy generators. Also, the expensive maintenance of protective coatings and systems could be obviated o ....Long-term corrosion of offshore steel structures in near-stagnant seawater. This project investigates the seawater corrosion of structural steels under near-stagnant and possibly polluted conditions. Better understanding of long-term corrosion of structural steels in near-stagnant seawaters is needed to predict the safety of steel offshore structures such as the pods supporting wind and wave energy generators. Also, the expensive maintenance of protective coatings and systems could be obviated or reduced if corrosion remains acceptable. This project plans to investigate experimentally the temporal development and stochastic nature of general corrosion and pitting for steels under actual near-stagnant seawater conditions. It also plans to build mathematical-probabilistic models for corrosion prediction, calibrated to field data. These models will include allowance for microbiological corrosion effects, important under anthropological pollution.Read moreRead less
Composite Structures of High-Strength Steel and Concrete. This project plans to investigate the use in building frames of composite steel-concrete members that use high-strength steel (HSS) instead of mild steel (MS). HSS is finding increased use in construction, and HSS has a much greater strength-to-weight ratio than MS, leading to lighter composite structures, less material usage and smaller foundations. Overall, this reduces the cost and carbon footprint of steel-framed buildings. The invest ....Composite Structures of High-Strength Steel and Concrete. This project plans to investigate the use in building frames of composite steel-concrete members that use high-strength steel (HSS) instead of mild steel (MS). HSS is finding increased use in construction, and HSS has a much greater strength-to-weight ratio than MS, leading to lighter composite structures, less material usage and smaller foundations. Overall, this reduces the cost and carbon footprint of steel-framed buildings. The investigation is planned to involve physical testing, numerical studies, developing structural models and crafting design guidance for T-beams, columns and joints. The major intended outcome of the project is design guidance that will support the expanded use of HSS.Read moreRead less
Tensile enhancement of cements utilising carbon nanotubes to create stronger, lighter, more ductile, and easier-to-build structures. Portland cement, commonly used worldwide for construction, is brittle and prone to cracking. A carbon nanotube-cement nanocomposite will be developed, improving tensile strength and durability. Stronger and lighter structures are viable. Less cement (and steel reinforcement) will be needed, thus reducing CO2 emissions and promoting sustainability.
Field scale biocementation in remediation and self-healing . This project aims to address the challenges of field applications and commercialisation of biocementation technology. Biocementation is the process through which Nature, with the help of microbes builds large and durable carbonate formations such as corals and beach rocks. This is emerging as a clean technology that alleviates the sustainability challenges faced by the construction industry. Microorganisms especially suited to Australi ....Field scale biocementation in remediation and self-healing . This project aims to address the challenges of field applications and commercialisation of biocementation technology. Biocementation is the process through which Nature, with the help of microbes builds large and durable carbonate formations such as corals and beach rocks. This is emerging as a clean technology that alleviates the sustainability challenges faced by the construction industry. Microorganisms especially suited to Australian conditions will be developed focusing on optimum use of resources for economic and environmental viability. Biocementation products will be developed for easy field application and self-healing concrete and bioremediation will be attempted on deteriorated structural systems. This technology has the potential to usher in the era of biologisation of construction.Read moreRead less
High-performance green concrete containing lithium refinery residue . This project aims to investigate the potential use of lithium refinery residue as a partial replacement for cement in concrete. This project expects to generate new knowledge in the area of green concrete through fundamental investigation of its properties and to incorporate this residue as a new supplementary cementitious material in existing Australian standard. The expected outcomes of the project include characterisation ....High-performance green concrete containing lithium refinery residue . This project aims to investigate the potential use of lithium refinery residue as a partial replacement for cement in concrete. This project expects to generate new knowledge in the area of green concrete through fundamental investigation of its properties and to incorporate this residue as a new supplementary cementitious material in existing Australian standard. The expected outcomes of the project include characterisation and benchmarking of lithium residue as an alternative supplementary cementitious material in concrete. This will provide significant environmental benefits in both a reduction in lithium waste and reduction of CO2 emission of cement in high-performance green concrete. Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE160101606
Funder
Australian Research Council
Funding Amount
$390,000.00
Summary
3D printing of concrete structures reinforced using multiscale fibers. The project aims to develop high performance concrete structures using 3D printing techniques. 3D printing of concrete is receiving increasing attention because of its potential use for direct construction of buildings and other complex infrastructures of considerable dimensions and of virtually any shape. This project aims to develop high-performance concrete structures reinforced by multiscale (nano- and micro-fibre) filler ....3D printing of concrete structures reinforced using multiscale fibers. The project aims to develop high performance concrete structures using 3D printing techniques. 3D printing of concrete is receiving increasing attention because of its potential use for direct construction of buildings and other complex infrastructures of considerable dimensions and of virtually any shape. This project aims to develop high-performance concrete structures reinforced by multiscale (nano- and micro-fibre) fillers using 3D printing. The project plans to introduce a micro-fibre 3D mesh into the concrete with a ‘knitting’ technique. The outcome of the project may lead to a 60 per cent reduction in current manufacturing cost and reduction of the lead-time for concrete infrastructures.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100604
Funder
Australian Research Council
Funding Amount
$360,000.00
Summary
Foam concrete using three-dimensional printing and nano-engineering. This project aims to design foam concrete. Foam concrete, made of air-voids and thin concrete films, has good thermal insulation/fire resistance and energy adsorption capacity but is weak. This project will develop a foam concrete via 3D printing to control air-void structures to achieve high strength and ductility and nano-engineering to improve the performance and durability of thin concrete films. It is expected that this hi ....Foam concrete using three-dimensional printing and nano-engineering. This project aims to design foam concrete. Foam concrete, made of air-voids and thin concrete films, has good thermal insulation/fire resistance and energy adsorption capacity but is weak. This project will develop a foam concrete via 3D printing to control air-void structures to achieve high strength and ductility and nano-engineering to improve the performance and durability of thin concrete films. It is expected that this high-performance foam concrete can be used as a load-bearing structural element to reduce construction costs. The project should discover chemical and physical mechanisms governing the resilience and sustainability of newly developed foam concrete.Read moreRead less
Self-Healing Concrete for Mitigation of Chloride Induced Steel Corrosion. This project aims to develop an intrinsic self-healing concrete using crystalline admixtures for rapid healing of concrete cracking. In marine environments, concrete cracking provides a direct access for chlorides from sea water to the steel reinforcement, leading to early and severe steel corrosion. The self-healing concrete will be designed to address the two main causes of concrete structures deterioration in Australia: ....Self-Healing Concrete for Mitigation of Chloride Induced Steel Corrosion. This project aims to develop an intrinsic self-healing concrete using crystalline admixtures for rapid healing of concrete cracking. In marine environments, concrete cracking provides a direct access for chlorides from sea water to the steel reinforcement, leading to early and severe steel corrosion. The self-healing concrete will be designed to address the two main causes of concrete structures deterioration in Australia: early age cracking due to restrained shrinkage and chloride induced steel reinforcement corrosion. The outcomes of this project will drive the advances in developing and applying crystalline admixture-based self-healing concrete to extend the service life of concrete structures and avoid costly repair.Read moreRead less