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
Improved Management of Australian Port Infrastructure by Development of Predictive Ageing Simulation. Exposure of built infrastructure to corrosive marine conditions causes deterioration and reduced service life. Asset managers lack predictive models of in-service durability. Using data gathered from Australian ports, life-cycle predictions will be developed, simulating durability and incorporating geographical location, structure type, composition, and levels of maintenance. The modelling has ....Improved Management of Australian Port Infrastructure by Development of Predictive Ageing Simulation. Exposure of built infrastructure to corrosive marine conditions causes deterioration and reduced service life. Asset managers lack predictive models of in-service durability. Using data gathered from Australian ports, life-cycle predictions will be developed, simulating durability and incorporating geographical location, structure type, composition, and levels of maintenance. The modelling has not been undertaken on Australian port assets, whereas international models reflect very different infrastructure and exposures and are based on simpler 2D conditions that do not simulate actual deterioration. The three-dimensional (3D) modelling and graphics will be unique worldwide, providing decision support for construction and maintenance.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
Special Research Initiatives - Grant ID: SR0354894
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
Innovative risk analysis, assessment, rehabilitation and strengthening of aging critical civil infrastructure. Much essential civil engineering infrastructure such as bridges, buildings, dams, pipelines and pavements was commissioned many decades ago, and sustaining the integrity of this infrastructure in developed nations as it ages is now considered to be a major challenge to the engineering and scientific community. Australia is not spared by the ramifications of its aging civil assets, and ....Innovative risk analysis, assessment, rehabilitation and strengthening of aging critical civil infrastructure. Much essential civil engineering infrastructure such as bridges, buildings, dams, pipelines and pavements was commissioned many decades ago, and sustaining the integrity of this infrastructure in developed nations as it ages is now considered to be a major challenge to the engineering and scientific community. Australia is not spared by the ramifications of its aging civil assets, and identification and rectification procedures that are often ad-hoc now represent a sizeable proportion of the GDP. This Research Network draws together the leading Australian research groups in engineering and applied mechanics in a coordinated program to address this most important cost to the community.Read moreRead less
INVESTIGATION OF THE MECHANISM CAUSING SHRINKAGE STRAINS IN CONCRETES MADE WITH SLAG BLENDED CEMENTS. Slag, an industrial by-product, can partially substitute portland cement. High slag contents produce highly durable concretes and help reduce the CO2 emissions due to cement manufacture. Major problem of high slag content is often the high shrinkages resulting in the concrete. This project will systematically study all the factors affect the shrinkage behaviour in slag-blended cement concrete ....INVESTIGATION OF THE MECHANISM CAUSING SHRINKAGE STRAINS IN CONCRETES MADE WITH SLAG BLENDED CEMENTS. Slag, an industrial by-product, can partially substitute portland cement. High slag contents produce highly durable concretes and help reduce the CO2 emissions due to cement manufacture. Major problem of high slag content is often the high shrinkages resulting in the concrete. This project will systematically study all the factors affect the shrinkage behaviour in slag-blended cement concretes including the appropriateness of the standard shrinkage measurement method. The other aim is to develop a micro-mechanical model to understand the fundamental mechanism involved. This model will also lead to a better understanding of the mechanisms involved in shrinkage in all concretes.Read moreRead less
Economical Particleboard Product from Hardwood Sawmill Waste for Domestic and Industrial Applications. The proposed project is aimed at developing a methodology to produce particleboard using hardwood saw-mill residue. Currently, 20% of logs used to produce sawn hardwood are disposed of by burning or as fertiliser. Using innovative concepts of high-moisture pressing and understanding composite material behaviour and internal dynamics during hot-pressing of particleboard, the proposed project wil ....Economical Particleboard Product from Hardwood Sawmill Waste for Domestic and Industrial Applications. The proposed project is aimed at developing a methodology to produce particleboard using hardwood saw-mill residue. Currently, 20% of logs used to produce sawn hardwood are disposed of by burning or as fertiliser. Using innovative concepts of high-moisture pressing and understanding composite material behaviour and internal dynamics during hot-pressing of particleboard, the proposed project will have a significant potential for revolutionising particleboard technology. Outcomes will be a significant contribution towards sustainability of the Australian Timber Industry and the environment by reducing logging for custom flaked softwood chips, which will be of significant benefit to regional and rural communities as well.Read moreRead less
The durability of geopolymeric products as a function of the nanostructured gel phase. A comprehensive physical, chemical and microscopic analysis will be conducted on a series of geopolymers and Ordinary Portland Cement samples manufactured from 1964 to 2001, with a focus on the characterisation of the nanostructured gel phase. The outcomes include (1) revealing the relationship between the nanostructured gel phase and durability; (2) the discovery of reaction mechanisms in geopolymerisation an ....The durability of geopolymeric products as a function of the nanostructured gel phase. A comprehensive physical, chemical and microscopic analysis will be conducted on a series of geopolymers and Ordinary Portland Cement samples manufactured from 1964 to 2001, with a focus on the characterisation of the nanostructured gel phase. The outcomes include (1) revealing the relationship between the nanostructured gel phase and durability; (2) the discovery of reaction mechanisms in geopolymerisation and formation of OPC; (3) computer modelling of nano-scale assemblies of atoms and molecules that will give desirable properties and durability, and (4) a tailored synthesis of geopolymers with vastly improved mechanical performance and acid, fire and bacterial resistance. This scientific understanding of long term durability will greatly enhance commercial acceptance of geopolymers.Read moreRead less