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Development of thin bed concrete masonry structural walls. Masonry is one of the most well regarded construction systems for low and medium rise buildings, but requires skilled labour. The current skills shortage incurs project delays, leading to direct and indirect costs to the Australian community. Thin bed technology for concrete masonry will utilise special blocks and binders for easy adoption by unskilled labour, without compromising personal safety or structural integrity. As thin bed wal ....Development of thin bed concrete masonry structural walls. Masonry is one of the most well regarded construction systems for low and medium rise buildings, but requires skilled labour. The current skills shortage incurs project delays, leading to direct and indirect costs to the Australian community. Thin bed technology for concrete masonry will utilise special blocks and binders for easy adoption by unskilled labour, without compromising personal safety or structural integrity. As thin bed walls require less volume of cement reduced binders, the technology will also lead to reduced carbon emission. Thus, this project addresses two of Australia's greatest challenges: environmental degradation and our critical skills shortage.Read moreRead less
Rotational Degrees Of Freedom In Modelling Of Materials With Intrinsic Length Scale. In many applications, from nanotechnology to construction and mining, the modelled objects are not large enough as compared to the material constituents for classical continuum modelling to be adequate, but yet encompass too many elements for comfortable particle-type computer simulation. Generalised continua would offer a viable option if a rational method of their construction for each intrinsic material struc ....Rotational Degrees Of Freedom In Modelling Of Materials With Intrinsic Length Scale. In many applications, from nanotechnology to construction and mining, the modelled objects are not large enough as compared to the material constituents for classical continuum modelling to be adequate, but yet encompass too many elements for comfortable particle-type computer simulation. Generalised continua would offer a viable option if a rational method of their construction for each intrinsic material structure were at hand. The project aims at developing the necessary homogenisation procedure and constructing generalised (Cosserat) continuum models of deformation, wave propagation and impact fracture in particulate and layered materials such as multi-wall nanotubes, fullerenes, particulate composites and layered rock masses.Read moreRead less
Design of Advanced Geopolymeric Materials Based on Nanostructural Characterisation and Modelling. Geopolymers are a class of advanced aluminosilicate materials primarily utilised in the construction and building products industries, where their application as a replacement for ordinary Portland cement provides the potential for highly significant Greenhouse gas emission reductions. Australian research has led to the increasingly widespread commercial use of this technology in a range of areas. D ....Design of Advanced Geopolymeric Materials Based on Nanostructural Characterisation and Modelling. Geopolymers are a class of advanced aluminosilicate materials primarily utilised in the construction and building products industries, where their application as a replacement for ordinary Portland cement provides the potential for highly significant Greenhouse gas emission reductions. Australian research has led to the increasingly widespread commercial use of this technology in a range of areas. Development of a full understanding of the exact chemical structure of geopolymers is essential to finding and developing new applications for these materials as well as maximising their use in known applications.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0775553
Funder
Australian Research Council
Funding Amount
$500,000.00
Summary
The Nanoscale Characterisation Centre WA Focussed Ion Beam Nanofabrication and Milling Facility. The advanced capabilities of the proposed nano-machining scanning electron microscope will facilitate research at the forefront of materials science and engineering. The proposed facility will play a key role in leading applied research across a wide range of areas including materials technology, nanochemistry, corrosion research, geology, sensor development, minerals processing and environmental re ....The Nanoscale Characterisation Centre WA Focussed Ion Beam Nanofabrication and Milling Facility. The advanced capabilities of the proposed nano-machining scanning electron microscope will facilitate research at the forefront of materials science and engineering. The proposed facility will play a key role in leading applied research across a wide range of areas including materials technology, nanochemistry, corrosion research, geology, sensor development, minerals processing and environmental research. The proposed facility to be used by scientific and industrial researchers will deliver applied interdisciplinary research of an international standard and allow Australian industries to remain internationally competitive.Read moreRead less
Anchorage of reinforcement in concrete structures subjected to loading and environmental extremes. The consequences of collapse of a reinforced concrete building are severe both in terms of cost and human lives. When subjected to extreme events, such as earthquake, blast, accidental impact or other overloads, a concrete structure should deform excessively, but not collapse, i.e. it must be robust. Robustness requires that the steel reinforcement is ductile and that it is adequately anchored in t ....Anchorage of reinforcement in concrete structures subjected to loading and environmental extremes. The consequences of collapse of a reinforced concrete building are severe both in terms of cost and human lives. When subjected to extreme events, such as earthquake, blast, accidental impact or other overloads, a concrete structure should deform excessively, but not collapse, i.e. it must be robust. Robustness requires that the steel reinforcement is ductile and that it is adequately anchored in the concrete. When a collapse does occur, it is often due to inadequate anchorage of the steel bars. This project will re-assess the anchorage requirements for reinforcement in concrete structures and provide reliable guidance to the construction industry. The project will lead directly to improvements in the safety and reliability of structures.Read moreRead less
FRACTURE OF STEEL FIBRE-REINFORCED CONCRETE: MODES I & II. In 2000-2001 Australia spent 17.5 billon dollars on heavy engineering infrastructure development (3% of its gross domestic product). As this infrastructure ages costs of repairs and maintenance magnifies. Conventional structural concrete can significantly deteriorate with time requiring regular and often costly maintenance. This research goes to the development of a class of "super" concretes with very high strengths and with excellent d ....FRACTURE OF STEEL FIBRE-REINFORCED CONCRETE: MODES I & II. In 2000-2001 Australia spent 17.5 billon dollars on heavy engineering infrastructure development (3% of its gross domestic product). As this infrastructure ages costs of repairs and maintenance magnifies. Conventional structural concrete can significantly deteriorate with time requiring regular and often costly maintenance. This research goes to the development of a class of "super" concretes with very high strengths and with excellent durability properties. With improved understanding of fracture and fracture processes with these materials, new models can be developed to represent the behaviour of structural elements fabricated with this "super" class of concretes and speed their implementation into Australian construction practice.Read moreRead less
A Re-evaluation of the Safety and Reliability Indices for Reinforced Concrete Structures. The use of concrete in Australian building structures exceeds 13 million tonnes per year and its impact on the environment is considerable. With 5% of total CO2 emissions coming from cement production, one of the main components of concrete, it is imperative that Australian standards produce efficient design solutions. Preliminary modelling shows that a minimum 5% efficiency gain is possible through a re-ev ....A Re-evaluation of the Safety and Reliability Indices for Reinforced Concrete Structures. The use of concrete in Australian building structures exceeds 13 million tonnes per year and its impact on the environment is considerable. With 5% of total CO2 emissions coming from cement production, one of the main components of concrete, it is imperative that Australian standards produce efficient design solutions. Preliminary modelling shows that a minimum 5% efficiency gain is possible through a re-evaluation of reliability indices with contemporary construction practices and materials, giving an immediate 180,000 tonne per annum reduction in carbon emissions. Added to this are savings through reduced transport and reduced water, sand and aggregate consumption, the potential saving on the environment, and economy, are considerable.Read moreRead less
Modelling of Damage Progression and its Effects on the Expected Safety and Satisfactory Performance of Existing Reinforced Concrete Infrastructure. The extent of reinforcement corrosion in existing infrastructure will influence demolish/repair decisions, maintenance strategies and hence the frequency, timing, extent and required level of efficiency and effectiveness of repairs. The project will provide improved evaluation of existing structural systems by considering improved deterioration model ....Modelling of Damage Progression and its Effects on the Expected Safety and Satisfactory Performance of Existing Reinforced Concrete Infrastructure. The extent of reinforcement corrosion in existing infrastructure will influence demolish/repair decisions, maintenance strategies and hence the frequency, timing, extent and required level of efficiency and effectiveness of repairs. The project will provide improved evaluation of existing structural systems by considering improved deterioration modelling and predictions of safety and satisfactory performance. The potential economic benefits of greater precision in infrastructure replacement or repair strategies and of the risks involved are large given that the size of Australia's infrastructure stock is valued at over $400 billion and its maintenance involves considerable costs.Read moreRead less
Special Research Initiatives - Grant ID: SR0354805
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
Research Network for Rehabilitation of Structures Using Advanced Materials and Frontier Technologies. There is an urgent need to rehabilitate existing structures that are considered inadequate in strength and serviceability. Frontier strengthening technologies (such as external post-tensioning and plate bonding) using conventional and advanced materials are being currently developed in Australia by different groups, but as yet not in a coordinated manner. The aim of this network is to bring tog ....Research Network for Rehabilitation of Structures Using Advanced Materials and Frontier Technologies. There is an urgent need to rehabilitate existing structures that are considered inadequate in strength and serviceability. Frontier strengthening technologies (such as external post-tensioning and plate bonding) using conventional and advanced materials are being currently developed in Australia by different groups, but as yet not in a coordinated manner. The aim of this network is to bring together a multi-disciplinary team with complementary strengths to provide an integrated solution for rehabilitation of structures. The core of the network focuses on design tools, linking the various technologies to provide appropriate rehabilitation and understanding of life cycle demands for major infrastructure.Read moreRead less
Blended calcium-magnesium binders for improved and more sustainable building materials. The project will explore the potential of new blended calcium-magnesium cements to significantly improve the sustainability and properties of concrete produced with Portland cement (PC). Concrete based on PC contributes to around 10% of global anthropogenic carbon dioxide. PC Concrete has many weaknesses such as rapid deterioration when exposed to aggressive environments, delayed reactions and early age crack ....Blended calcium-magnesium binders for improved and more sustainable building materials. The project will explore the potential of new blended calcium-magnesium cements to significantly improve the sustainability and properties of concrete produced with Portland cement (PC). Concrete based on PC contributes to around 10% of global anthropogenic carbon dioxide. PC Concrete has many weaknesses such as rapid deterioration when exposed to aggressive environments, delayed reactions and early age cracking caused by shrinkage. The proposed research will investigate ways of using the new binder system to overcome these weaknesses and to reduce carbon dioxide emission. The expected outcome will be a proven technology for manufacturing new building materials that are environmentally more sustainable and with enhanced properties.Read moreRead less