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
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
The implications of low-ductility reinforcement and strain localisation on the strength and ductility of reinforced concrete two-way slabs. In the design of reinforced concrete structures, ductility is an important requirement, providing warning of failure, redistribution of internal actions at overloads and justification of many of the assumptions made in structural analysis and design. The recent introduction in Australia of low-ductility, deformed welded wire fabric reinforcement (Class L) ha ....The implications of low-ductility reinforcement and strain localisation on the strength and ductility of reinforced concrete two-way slabs. In the design of reinforced concrete structures, ductility is an important requirement, providing warning of failure, redistribution of internal actions at overloads and justification of many of the assumptions made in structural analysis and design. The recent introduction in Australia of low-ductility, deformed welded wire fabric reinforcement (Class L) has resulted in concrete slabs with relatively brittle failure modes and its use has been the subject of much debate. This research will investigate the ductility of two-way slabs containing Class L mesh and the applicability of established design procedures. It will lead to safer and better performing r.c. floor systems and, if necessary, new ductility specifications for Class L steel.Read moreRead less
The impact of high strength, low ductility reinforcement on the ductility and serviceability of concrete structures. The behaviour of reinforced concrete structures has been adversely affected by the recent introduction in Australia of 500 MPa steel reinforcement(with higher strength and lower ductibility than the previously available 400MPa steel bars). Structures with reduced ductility, greater deflection and larger crack widths will result. Unexpected overloads may now cause fracturing of the ....The impact of high strength, low ductility reinforcement on the ductility and serviceability of concrete structures. The behaviour of reinforced concrete structures has been adversely affected by the recent introduction in Australia of 500 MPa steel reinforcement(with higher strength and lower ductibility than the previously available 400MPa steel bars). Structures with reduced ductility, greater deflection and larger crack widths will result. Unexpected overloads may now cause fracturing of the steel, resulting in brittle and catastrophic collapse. This project aims to investigate, analytically and experimentally, the impact of the new reinforcement on the design and performance of concrete structures, including strength, ductility and serviceability, and to provide rational design guidance to the structural engineering profession.Read moreRead less
Hybrid multiple-tube concrete columns incorporating composite materials. The project aims to investigate the behaviour of and design hybrid multiple-tube concrete columns, a form of column. These columns allow the use of small circular high-strength steel tubes, readily available in the market, to suit the specific needs of construction projects of various scales. In the column, a durable outer tube made of fibre-reinforced polymer (FRP) composites protects steel tubes, and their high yield stre ....Hybrid multiple-tube concrete columns incorporating composite materials. The project aims to investigate the behaviour of and design hybrid multiple-tube concrete columns, a form of column. These columns allow the use of small circular high-strength steel tubes, readily available in the market, to suit the specific needs of construction projects of various scales. In the column, a durable outer tube made of fibre-reinforced polymer (FRP) composites protects steel tubes, and their high yield stress can be fully exploited through section configuration. The new column is expected to enable wider, safer and more economical use of FRP and high-strength steel, and meet demands for resilient civil infrastructure.Read moreRead less
Stiffness degradation of concrete members induced by reinforcement corrosion. Corrosion of steel reinforcement is the major cause of deterioration of reinforced concrete structures exposed to coastal and marine environments. In Australia, corrosion-related repair and rehabilitation costs about $13 billion annually. Research carried out to date on the effects of corrosion in concrete structures has not considered the effects of sustained loads and shrinkage on corrosion and the deterioration of m ....Stiffness degradation of concrete members induced by reinforcement corrosion. Corrosion of steel reinforcement is the major cause of deterioration of reinforced concrete structures exposed to coastal and marine environments. In Australia, corrosion-related repair and rehabilitation costs about $13 billion annually. Research carried out to date on the effects of corrosion in concrete structures has not considered the effects of sustained loads and shrinkage on corrosion and the deterioration of member stiffness with time. This project will develop a new theoretical basis to characterise corrosion effects on the in-service behaviour of concrete structures, essential for adequate assessment of durability of existing structures and for the safe design of new structures. Read moreRead less
Integrated multilayered floor systems for high-performance buildings. This project aims to develop new integrated multilayered floor systems that is expected to increase the structural performance of inter-storey floors, minimise construction time and integrate the installation of services and structural components. This development will build on current construction techniques commonly available in Australia, such as composite steel-concrete systems, thin-metal products and prestressing techniq ....Integrated multilayered floor systems for high-performance buildings. This project aims to develop new integrated multilayered floor systems that is expected to increase the structural performance of inter-storey floors, minimise construction time and integrate the installation of services and structural components. This development will build on current construction techniques commonly available in Australia, such as composite steel-concrete systems, thin-metal products and prestressing techniques, and will combine their use in innovative arrangements which integrate services. A holistic theoretical framework intends to be established to develop and identify floor systems that maximise the structural efficiency while minimising the use of construction materials.Read moreRead less
Development of prefabricated composite building panels and connections . This project will develop a new prefabricated composite brick-concrete panel technology, by exploiting cutting-edge manufacturing capabilities for the production of bricks and concrete components. It is expected to generate new robust design methodologies at both service and ultimate conditions by relying on advanced testing and theoretical modelling.
The project is expected to transform the current brick industry by repla ....Development of prefabricated composite building panels and connections . This project will develop a new prefabricated composite brick-concrete panel technology, by exploiting cutting-edge manufacturing capabilities for the production of bricks and concrete components. It is expected to generate new robust design methodologies at both service and ultimate conditions by relying on advanced testing and theoretical modelling.
The project is expected to transform the current brick industry by replacing traditional labour-intense brick construction with advanced and cost-effective prefabricated technologies that will enable brick construction to enter new markets, such as those of multi-storey buildings and complex load-bearing facades, previously not feasible or cost-effective with traditional brick technology.
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Innovative coupled composite steel-concrete shear wall and frame systems. This project aims to develop an innovative coupled composite steel-concrete shear wall and frame system that revolutionises and improves the economical design and construction of multi-storey buildings. The proposed system uses novel cost-effective composite structural components that can be prefabricated and easily assembled on-site using innovative blind bolting techniques to speed up construction. The project will offer ....Innovative coupled composite steel-concrete shear wall and frame systems. This project aims to develop an innovative coupled composite steel-concrete shear wall and frame system that revolutionises and improves the economical design and construction of multi-storey buildings. The proposed system uses novel cost-effective composite structural components that can be prefabricated and easily assembled on-site using innovative blind bolting techniques to speed up construction. The project will offer a promising opportunity to promote prefabricated and modular construction which is believed will have a major benefit in shaping the future construction industry. This will provide significant benefits to Australian structural engineers and the construction industry in advancing their knowledge in composite construction.Read moreRead less
Time-dependent stiffness of cracked reinforced concrete. This project will quantify the time-dependent change in stiffness of cracked reinforced concrete and provide a clearer insight into the time-varying load sharing mechanisms at the concrete-reinforcement interface. Analytical models to simulate structural behaviour and reliable procedures for use in structural design will be developed.