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
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
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
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 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
Long-term behaviour of thin-walled concrete curved members strengthened with externally bonded composite materials. Concrete arches and domes are prone to catastrophic failures which involve loss of life and limb, and many global iconic structures are of this form. When subjected to creep, shrinkage and thermal effects, their behaviour is non-linear and complex. This proposal will keep Australian research at the forefront by developing a fundamental understanding of these structural forms over t ....Long-term behaviour of thin-walled concrete curved members strengthened with externally bonded composite materials. Concrete arches and domes are prone to catastrophic failures which involve loss of life and limb, and many global iconic structures are of this form. When subjected to creep, shrinkage and thermal effects, their behaviour is non-linear and complex. This proposal will keep Australian research at the forefront by developing a fundamental understanding of these structural forms over time, when strengthened with externally-bonded composite materials in an innovative retrofit procedure. It encompasses the priority goal of frontier technologies for building and transforming Australian industry, will lead to valuable guidance for engineers, and will contribute to the training of skilled PhD scholars.Read moreRead less
Securing Longevity of Reinforced Concrete Infrastructure Through Enhanced Cathodic Protection Design. The sustainability of Australia's extensive maritime infrastructure is impaired by corrosion, causing ongoing rehabilitation and reduced service life. Cathodic protection (CP) is most widely used to restore corrosion-damaged concrete, however the design principles are debated and uncertainty exists on how ongoing performance should be monitored. Australian Industry will benefit from: (i) Less ex ....Securing Longevity of Reinforced Concrete Infrastructure Through Enhanced Cathodic Protection Design. The sustainability of Australia's extensive maritime infrastructure is impaired by corrosion, causing ongoing rehabilitation and reduced service life. Cathodic protection (CP) is most widely used to restore corrosion-damaged concrete, however the design principles are debated and uncertainty exists on how ongoing performance should be monitored. Australian Industry will benefit from: (i) Less expenditure and disruption to operations of key infrastructure; (ii) More sustainable maritime infrastructure requiring less labour, time and capital expenditure on inspection, testing, maintenance and rehabilitation works;(iii)Availability of experts with advanced training in CP of reinforced concrete; (iv) Update Australian CP Standard AS 2832.5-2002Read moreRead less
Gel interactions in geopolymers for sustainable construction. This project will benefit Australia by enabling reliable production of environmentally friendly construction materials. These materials, geopolymer cements, have been developed to the point where they are beginning to be commercialised in Australia, but the factors controlling their performance and durability are only beginning to be well understood. Geopolymer cements are made using ash from coal-fired power stations, and are competi ....Gel interactions in geopolymers for sustainable construction. This project will benefit Australia by enabling reliable production of environmentally friendly construction materials. These materials, geopolymer cements, have been developed to the point where they are beginning to be commercialised in Australia, but the factors controlling their performance and durability are only beginning to be well understood. Geopolymer cements are made using ash from coal-fired power stations, and are competitive with traditional Portland cement in terms of both performance and cost. This project will use recently developed experimental techniques and Australian research expertise in this field, and will lead to significant environmental and cost savings in the construction industry.Read moreRead less