DEVELOPMENT OF SCIENTIFIC AND EXPERIMENTAL BASIS FOR MANUFACTURE OF BUILDING MATERIALS WITH SPECIAL PROPERTIES BASED ON GEOPOLYMERS. This project seeks to develop a new class of building materials based on geopolymers. These materials will have superior corrosion resistance, fire resistance, heat and noise insulating properties. The project will study in detail the effect of processing parameters on microstructure of these materials, and effect of structure and composition on properties. A good ....DEVELOPMENT OF SCIENTIFIC AND EXPERIMENTAL BASIS FOR MANUFACTURE OF BUILDING MATERIALS WITH SPECIAL PROPERTIES BASED ON GEOPOLYMERS. This project seeks to develop a new class of building materials based on geopolymers. These materials will have superior corrosion resistance, fire resistance, heat and noise insulating properties. The project will study in detail the effect of processing parameters on microstructure of these materials, and effect of structure and composition on properties. A good understanding of this would result in environmentally friendly inexpensive inorganic materials with superior durability, chemical and fire resistance, heat and noise insulation properties that can substitute organic polymers and ordinary Portland cement concrete in special applications.Read moreRead less
Prediction of Time-dependent Deformations in Post-tensioned Concrete Suspended Slabs in Tall Buildings. The proposed project aims to develop an analytical model that can predict the time-dependent deformations in post-tensioned concrete slabs considering concrete shrinkage and creep, cracking, and bond-slip behaviour. Over the past several years, numerous cases have been reported in Australia and elsewhere, of flexural elements for which the calculated deflection is far less than the actual defl ....Prediction of Time-dependent Deformations in Post-tensioned Concrete Suspended Slabs in Tall Buildings. The proposed project aims to develop an analytical model that can predict the time-dependent deformations in post-tensioned concrete slabs considering concrete shrinkage and creep, cracking, and bond-slip behaviour. Over the past several years, numerous cases have been reported in Australia and elsewhere, of flexural elements for which the calculated deflection is far less than the actual deflection leading to serviceability problems. The significance of this investigation hence lies in its potential to provide a solution to more accurately predict service-life deflections in post-tensioned concrete suspended slabs and validate the model with real-life deflections monitored over time on a current building project.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
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
Behaviour of Tunnels in Sedimentary Rocks of the Sydney Basin. The aim of this project is to gain understanding of ground behaviour around tunnels in the Sydney region, how the ground interacts with fibre reinforced shotcrete tunnel linings, and how changes in material performance affect risk to users and the reliability of the tunnel structures. These aims will be met by a combination of field and laboratory experiments and theoretical modelling. The outcome will be a rational and reliable de ....Behaviour of Tunnels in Sedimentary Rocks of the Sydney Basin. The aim of this project is to gain understanding of ground behaviour around tunnels in the Sydney region, how the ground interacts with fibre reinforced shotcrete tunnel linings, and how changes in material performance affect risk to users and the reliability of the tunnel structures. These aims will be met by a combination of field and laboratory experiments and theoretical modelling. The outcome will be a rational and reliable design method for shotcrete lined tunnels in the Sydney basin.Read moreRead less
The development of novel geopolymers incorporating calcium and cellulosic material. Geopolymer technology transforms waste aluminosilicate materials into commercially viable products, which possess superior physical and chemical properties compared to ordinary concrete. These high-tech materials have novel acid and fire resistance applications, e.g. in construction and for the coating of optical fibres. Understanding the chemical relationship between geopolymers and other cementitious materials ....The development of novel geopolymers incorporating calcium and cellulosic material. Geopolymer technology transforms waste aluminosilicate materials into commercially viable products, which possess superior physical and chemical properties compared to ordinary concrete. These high-tech materials have novel acid and fire resistance applications, e.g. in construction and for the coating of optical fibres. Understanding the chemical relationship between geopolymers and other cementitious materials is pivotal to further advances in inorganic polymers. This project uses surface reactivity, spectroscopy, electronmicroscopy and electron diffraction to determine the role of calcium and cellulosic additives in the phase composition, microstructure and properties of geopolymers. Therefore, the factors distinguishing geopolymers from alkali-activated cement and ordinary concrete are identified.Read moreRead less
Effect of processing on microstructure of 'Biocrete' organo-mortar. 'Biocrete' is a novel organo-mortar whose composition differs substantially from conventional Portland cement based polymer mortars. It is a relatively new product with significant commercial potential because of its acid resistance and ease of application. However, the microstructure of this material is extremely complex and not well understood nor is the way the microstructure develops during the processing and application of ....Effect of processing on microstructure of 'Biocrete' organo-mortar. 'Biocrete' is a novel organo-mortar whose composition differs substantially from conventional Portland cement based polymer mortars. It is a relatively new product with significant commercial potential because of its acid resistance and ease of application. However, the microstructure of this material is extremely complex and not well understood nor is the way the microstructure develops during the processing and application of the material known. This project will use advanced materials characterisation methods to elucidate the microstructure and to quantify the effects of processing parameters on the microstructure. Such information is critical for further formulation and application development in important areas such as sewer relining.Read moreRead less
Tailoring geopolymer concretes for sustainable development. This project will benefit Australia by enhancing the wider uptake of environmentally friendly geopolymer concretes. These materials are now commercially available in Australia, and provide the opportunity to obtain value from multiple millions of tonnes of industrial wastes (coal fly ash and metallurgical slags). An Australian company, Zeobond, is currently the world's leading commercial producer of geopolymers, and is collaborating in ....Tailoring geopolymer concretes for sustainable development. This project will benefit Australia by enhancing the wider uptake of environmentally friendly geopolymer concretes. These materials are now commercially available in Australia, and provide the opportunity to obtain value from multiple millions of tonnes of industrial wastes (coal fly ash and metallurgical slags). An Australian company, Zeobond, is currently the world's leading commercial producer of geopolymers, and is collaborating in this project to develop a scientific understanding of how best to formulate durable geopolymer concretes. Geopolymer concrete will provide the opportunity to reduce Australia's CO2 emissions by over a million tonnes per year when implemented on a commercial scale.Read moreRead less
Boundary Effects on Bridging-Stress/Crack-Opening Relationship and Specific Fracture Energy. This project is to investigate the boundary/interface influence on fracture/material properties of composites and thin layered structures along crack path to free boundary and bi-material interface. The local fracture energy dissipation along crack path is emphasised and used to study the boundary influence on the cohesive law - the relationship between crack bridging stress and crack opening displaceme ....Boundary Effects on Bridging-Stress/Crack-Opening Relationship and Specific Fracture Energy. This project is to investigate the boundary/interface influence on fracture/material properties of composites and thin layered structures along crack path to free boundary and bi-material interface. The local fracture energy dissipation along crack path is emphasised and used to study the boundary influence on the cohesive law - the relationship between crack bridging stress and crack opening displacement. New fracture mechanics model is proposed that incorporates the boundary/interface influence and the more popular size effect. The new boundary/interface effect model will be more relevant to modern materials applications related to layered ceramics, thin films, coatings in electronic and bio-medical applications.Read moreRead less
Development of new-generation autoclaved cellulose fibre-cement composites using alumina-silica rich industrial waste. Autoclaved cellulose fibre-cement (FC) composites are used for construction purposes globally. Alumina-silica rich industrial waste, such as fired clay bricks and tiles, are proven to be highly reactive under autoclaving conditions and are generated in abundance either during the production process or demolition of buildings worldwide. The project aims to utilise this renewable ....Development of new-generation autoclaved cellulose fibre-cement composites using alumina-silica rich industrial waste. Autoclaved cellulose fibre-cement (FC) composites are used for construction purposes globally. Alumina-silica rich industrial waste, such as fired clay bricks and tiles, are proven to be highly reactive under autoclaving conditions and are generated in abundance either during the production process or demolition of buildings worldwide. The project aims to utilise this renewable waste for the manufacture of improved FC products. The successful outcomes of the project could allow a new range of cost-effective building products which need less energy for their manufacture, to be realised for both developed and developing countries.Read moreRead less