ORCID Profile
0000-0001-6962-2121
Current Organisation
University of Technology Sydney
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Industrial Chemistry | Other Chemical Sciences | Solid State Chemistry | Colloid And Surface Chemistry | Chemistry Of Catalysis | Ceramics | Chemical Sciences Not Elsewhere Classified | Structural Engineering | Materials Engineering | Construction Materials | Physical Chemistry (Incl. Structural) | Composite Materials | Civil Engineering | Environmental Engineering Not Elsewhere Classified |
ANZSRC Socio-Economic Objective (SEO)
Clay products | Other | Energy storage | Cement and Concrete Materials | Cement and concrete materials | Civil Construction Design | Recycling | Industrial gases | Cement Products and Concrete Materials
Related Links
Publications
Dependence of the friction process on the molecular structure and architecture of thin polymer films
Publisher: Elsevier BV
Date: 12-1996
Assessment of the ground aggregate paste (GAP) test for aggregate alkali–silica reactivity screening
Publisher: Springer Science and Business Media LLC
Date: 12-05-2020
Thermal characterization of the clay binder of heritage Sydney sandstones
Publisher: Springer Science and Business Media LLC
Date: 04-2008
A preliminary study of non-woven fabrics for forensic identification purposes
Publisher: Informa UK Limited
Date: 09-11-2023
Structure-Property Relationships in Thin Solid Poly(methyl methacrylate) Boundary Films
Publisher: Informa UK Limited
Date: 1995
An atomic force microscopy investigation of plastic wrapping materials of forensic relevance buried in soil environments
Publisher: Informa UK Limited
Date: 26-03-2018
TMA and SEM characterization of the thermal dehydration of australian sedimentary opal
Publisher: Springer Science and Business Media LLC
Date: 04-2007
Thermophysical Properties of Natural Glasses at the Extremes of the Thermal History Profile
Publisher: Springer Netherlands
Date: 10-2010
Micro Raman characterization of nickel sulfide inclusions in toughened glass
Publisher: Elsevier BV
Date: 05-2000
Characterisation of blue pigments from ceremonial objects of the Southern Highlands in Papua New Guinea using vibrational spectroscopy and X-ray diffraction
Publisher: Elsevier BV
Date: 07-2016
An incremental integral isoconversional method - Determination of activation parameters
Publisher: Springer Science and Business Media LLC
Date: 2003
29Si and 27Al NMR study of amorphous and paracrystalline opals from Australia
Publisher: Elsevier BV
Date: 12-2003
Water and hydrogen release from perlites and opal
Publisher: Springer Science and Business Media LLC
Date: 27-12-2014
Micro-characterisation of the colour palette of ceremonial objects from the Papua New Guinea Highlands: Transition from natural to synthetic pigments
Publisher: Elsevier BV
Date: 2016
Solvent Induced Morphological Changes to Polycarbonate
Publisher: Springer Science and Business Media LLC
Date: 1993
DOI: 10.1557/PROC-304-185
Abstract: The interface shear properties of thin bisphenol-A-poly(carbonate) films are measured and interpreted in terms of the effects of the morphology induced by solvent plasticisation. The variations in the interface rheology are discussed in terms of the Eyring stress modified thermally activated flow model. The changes in the molecular architecture, induced by plasticisation, are also examined using vibrational spectroscopy. A correlation is made between the proposed mechanism for microshear and the conveyed morphological properties of the polymer film at the molecular level.
Characterisation of sedimentary opals by Fourier transform Raman spectroscopy
Publisher: Elsevier BV
Date: 11-1997
Pozzolanic reactivity of the supplementary cementitious material pitchstone fines by thermogravimetric analysis
Publisher: Springer Science and Business Media LLC
Date: 27-04-2009
Investigation of flint glass for partial replacement of fine aggregate in fly ash cement-based mortars
Publisher: CRC Press
Date: 26-11-2012
DOI: 10.1201/B15320-206
ESEM-EDS Investigation of the Weathering of a Heritage Sydney Sandstone
Publisher: Oxford University Press (OUP)
Date: 03-12-2010
DOI: 10.1017/S1431927610094249
Abstract: The degradation of Sydney sandstone used to build the heritage St Mary's Cathedral in Sydney, Australia, has been investigated using environmental scanning electron microscopy combined with energy dispersive X-ray spectroscopy. This technique provided the structural details of the cementing clay and an elemental characterization the sandstone. The observed differences in the elemental composition of the unweathered and weathered sandstones were associated with changes to the clay microstructure upon weathering. The results support the substitution theory that Fe 3+ replaces Al 3+ in the kaolinite clay component upon weathering. An examination of the impurities present prior to a nonstructural iron removal treatment revealed the presence of minerals that may provide a source of the elements responsible for the substitution process.
Friction Energy Dissipation in Organic Films
Publisher: Elsevier
Date: 1994
Composition of Alkali–Silica Reaction Products in Laboratory and Field Concrete
Publisher: Springer Nature Singapore
Date: 2023
DOI: 10.1007/978-981-99-3330-3_5
Abstract: This study investigated the composition of alkali–silica reaction (ASR) products formed in mortar and concrete that underwent accelerated ASR testing using two test methods: the accelerated mortar bar test (AMBT) and the simulated pore solution immersion test (SPSM). The composition of the ASR products formed in the accelerated tests was compared with those in a 25-year old bridge in New South Wales demolished due to ASR. Results showed that the ASR products inside an aggregate contained calcium (≈20%), silicon (≈60%), and alkalis (≈20%) regardless of the ASR test method used. The ASR products in the AMBT s le only contained sodium, whereas the ASR products in the SPSM test and the demolished bridge both contained significant amounts of sodium and potassium, which indicated that the type of alkali in the ASR product is largely affected by the dominant alkali in the pore solution. However, considering that the total alkali content (Na + K) in the ASR products was similar regardless of the ASR test method used, this suggests that the total alkali content has more influence on the rate of expansion than the type of alkali. The composition of the ASR products also notably varied depending on the location in the concrete. ASR products closer to the cement paste had a higher calcium and lower alkali content than those inside an aggregate, which suggests that the calcium as well as the alkali content of the ASR products plays a significant role in the degree of ASR expansion.
Estimation of the diffusion coefficient of water evolved during the non-isothermal dehydration of Australian sedimentary opal
Publisher: Springer Science and Business Media LLC
Date: 04-2007
A TG analysis of the effect of calcination conditions on the properties of reactive magnesia
Publisher: Springer Science and Business Media LLC
Date: 04-2007
Mitigating Alkali-Silica Reaction Using Binary Blends with Reactive Aggregate Powders
Publisher: Elsevier BV
Date: 2022
DOI: 10.2139/SSRN.4042536
Characterisation of poly(vinyl alcohol)–montmorillonite composites with higher clay contents
Publisher: Elsevier BV
Date: 10-2011
A study of storage conditions and treatments for forensic bone specimens using thermogravimetric analysis
Publisher: Springer Science and Business Media LLC
Date: 18-02-2010
Estimation of the storage life of dimethylol urea using non-isothermal accelerated testing
Publisher: Springer Science and Business Media LLC
Date: 12-10-2011
Two Stage Kinetic Model for the alpha-beta Phase Recrystallisation in Nickel Sulphide
Publisher: Springer Science and Business Media LLC
Date: 2001
X-Ray Mapping and Scatter Diagram Analysis of the Discoloring Products Resulting from the Interaction of Artist's Pigments
Publisher: Oxford University Press (OUP)
Date: 31-08-2010
DOI: 10.1017/S143192761009375X
Abstract: The discoloring interaction between the artist's pigments cadmium yellow and the copper-containing malachite, an interaction that is conjectured to cause black spotting in oil paintings of the 19th and early 20th centuries, was examined using X-ray mapping and scatter diagram analysis. The application of these coupled techniques confirmed that copper sulfide phases were produced during discoloration reaction. Scatter diagram analysis indicated that two copper sulfide stoichiometries (CuS and Cu 3 S 2 ) were present as reaction products where previously only crystalline CuS (covellite) had been identified by X-ray diffraction. The results demonstrate the potential of X-ray mapping coupled with scatter diagram analysis for the identification of both crystalline and X-ray amorphous phases produced by such complex heterogeneous interactions and their applicability to the investigation of interactions of artists' pigments.
The characterisation of pigments used in X-ray rock art at Dalakngalarr 1, central-western Arnhem Land
Publisher: Elsevier BV
Date: 05-2016
DSC of natural opal: insights into the incorporation of crystallisable water in the opal microstructure
Publisher: Springer Science and Business Media LLC
Date: 06-11-2019
TG-MS characterisation of pig bone in an inert atmosphere
Publisher: Springer Science and Business Media LLC
Date: 05-2007
The Strain Rate Dependence of the Interface Shear Strength of Poly(methyl methacrylate) Films
Publisher: Elsevier
Date: 1993
Thermal characterization of chemically reduced electrolytic manganese dioxide
Publisher: Springer Science and Business Media LLC
Date: 06-2005
A study of ochres from an Australian aboriginal bark painting using thermal methods
Publisher: Springer Science and Business Media LLC
Date: 15-02-2011
An Investigation of the Degradation of Polymeric Grave Goods in Soil Environments
Publisher: Springer International Publishing
Date: 2016
Role of Aggregate Reactivity, Binder Composition, and Curing Temperature on the Delayed Ettringite Formation and Associated Durability Loss in Concrete
Publisher: Springer Nature Singapore
Date: 2023
DOI: 10.1007/978-981-99-3330-3_11
Abstract: The durability of concrete is critical to its worldwide use as a structural material for buildings and infrastructure, with the lifetime service of concrete greatly affecting its economic, environmental, and social costs. Causes of durability loss in some concrete structures can be attributed to the alkali–silica reaction (ASR) and delayed ettringite formation (DEF). Both are chemical reactions that have the potential to cause expansion and strength loss in affected elements. Significant overlap exists in the factors contributing to ASR and DEF in concrete structures, with widely reported evidence of deleterious DEF frequently occurring in conjunction with mild or moderate ASR. For precast concrete, experiments in mortars have provided limits in the alkali and sulfate content of the binder and maximum curing temperatures used to minimize DEF risk. The role of other constituents in concrete specimens, notably the aggregate, has been overlooked. We investigated the role of reactive aggregates and ASR in the susceptibility of concrete to deleterious DEF.
Autoclaved OPC-quartz blends incorporating clay-brick waste. Part I: factorial design effects on strength development
Publisher: Thomas Telford Ltd.
Date: 10-2005
DOI: 10.1680/ADCR.2005.17.4.133
Abstract: The utilisation of waste materials in the manufacturing of building products is of global interest due to technological and socio-economic benefits. For ex le, alumina—silica-rich industrial waste, such as fired clay brick, is available in large quantities worldwide and is generated from the demolition of buildings and during their manufacture. In recent years the construction industry has shown considerable interest in the utilisation of this industrial waste. This paper presents preliminary work conducted into the combined effects of several factors including autoclaving regime and mix design on mechanical properties investigated using a full factorial experimental design.
Nanoindentation hardness of banded Australian sedimentary opal
Publisher: IOP Publishing
Date: 12-03-2008
Discrimination of thermally treated low density polyethylenes using DSC and principal component analysis
Publisher: Springer Science and Business Media LLC
Date: 21-10-2011
Interactions Between Pigments in 19th and Early 20th Century Oil Paintings - In Situ Studies Using the Environmental Scanning Electron Microscope
Publisher: Oxford University Press (OUP)
Date: 08-2004
DOI: 10.1017/S1431927604881376
Abstract: Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.
The mechanisms and consequences of inorganic reactions during the production of ferrous sulphate enriched bamboo biochars
Publisher: Elsevier BV
Date: 05-2018
DSC Characterisation Of Chemically Reduced Electrolytic Manganese Dioxide
Publisher: Springer Science and Business Media LLC
Date: 04-2007
A spectroscopic investigation of the weathering of a heritage Sydney sandstone
Publisher: Elsevier BV
Date: 12-2008
DOI: 10.1016/J.SAA.2008.02.042
Abstract: Infrared spectroscopy has been employed in a study of the degradation of heritage Sydney sandstone used in St. Mary's Cathedral in Sydney, Australia. Spectra were used to characterise the clay components taken from weathered and unweathered sandstone blocks removed from the Cathedral as part of a restoration programme. Two types of kaolin clays - kaolinite and its polymorph, dickite - have been identified. A higher amount of dickite present in the clay of weathered sandstone indicated that a kaolinite-to-dickite transformation occurs upon weathering. X-ray photoelectron spectroscopy was also used to confirm the presence of a more thermally stable polymorph of the kaolinite in the sandstone.
Investigation of ground flint glass as a supplementary cementitious material in autoclaved lime-silica binders
Publisher: CRC Press
Date: 26-11-2012
DOI: 10.1201/B15320-43
Low temperature DSC characterisation of water in opal
Publisher: Springer Science and Business Media LLC
Date: 20-01-2013
Effect of Carbonation on the Microstructure and Phase Development of High-Slag Binders
Publisher: Springer Nature Singapore
Date: 2023
DOI: 10.1007/978-981-99-3330-3_22
Abstract: The drive for sustainable concrete production favors the use of high replacement levels of supplementary cementitious materials (SCMs) in the concrete mix. The use of SCMs such as fly ash and slag, however, although they improve the sustainability of concrete production as well as most concrete durability properties, increases the carbonation rate. Carbonation decreases the pH of the concrete pore solution, making the steel reinforcement susceptible to corrosion. The effect of carbonation is, however, not confined to the change in pH of the pore solution. We investigated changes in the microstructure and phases of high-slag binders due to carbonation. The carbonation resistance of mortars with 50 and 70% slag replacement were investigated at exposure conditions of 2%CO 2 , 50%RH, 23 °C. The carbonated and non-carbonated parts of the mortars were subjected to various characterization techniques to investigate the effect of carbonation on microstructure and phase development. Results confirmed the absence of portlandite in all the carbonated regions (“colorless” by phenolphthalein test, which indicated that the change in color of the phenolphthalein solution was due to the absence of portlandite to buffer the pH). Significant reduction in the amount of C-S-H, as well as increase in the amount of calcium carbonate, were been observed in the carbonated regions. Aragonite, a polymorph of CaCO 3 , was very prominent in all the carbonated mortars.
Thermal analysis of heritage stones
Publisher: Springer Science and Business Media LLC
Date: 06-2005
Accelerated Mortar Bar Test to Assess the Effect of Alkali Concentration on the Alkali–Silica Reaction
Publisher: Springer Nature Singapore
Date: 2023
DOI: 10.1007/978-981-99-3330-3_24
Abstract: We report the outcomes of a study into the influence of alkali concentration on expansion induced by the alkali–silica reaction (ASR), a deleterious reaction that causes cracking and durability loss in concrete structures. We assessed the effect of alkali concentration on mortar bar expansion using a modified form of AS1141.60.1, the accelerated mortar bar test (AMBT). Mortar prisms were prepared with a reactive aggregate and immersed in alkali solutions of varying concentrations (from 0.4 to 1.0 M NaOH) and saturated limewater at 80 °C. Expansion was monitored for 28 days. The degree of expansion was observed to increase with increasing alkali concentration and an induction period prior to expansion was observed for the 0.4 M NaOH. No expansion was observed for mortar bars immersed in the control saturated lime water bath. Additionally, no expansion was observed for mortars using blended cements containing fly ash (FA) and ground granulated blast furnace slag, suggesting the AMBT is a viable technique for demonstrating the efficacy of mitigation strategies.
Accelerated thermooxidative ageing tests and their extrapolation to lower temperatures
Publisher: Springer Science and Business Media LLC
Date: 05-2005
A novel multi-functional expansive additive for drying shrinkage reduction in mortars
Publisher: CRC Press
Date: 18-11-2010
DOI: 10.1201/B10571-159
Brittle-Ductile Transitions in High Density Polyethylene Films
Publisher: Elsevier
Date: 1995
FTIR and Raman microscopy of organic binders and extraneous organic materials on painted ceremonial objects from the Highlands of Papua New Guinea
Publisher: Elsevier BV
Date: 09-2017
In-Situ Investigation of Discolouration Processes Between Historic Oil Paint Pigments
Publisher: Springer Science and Business Media LLC
Date: 28-04-2006
Application of Isoconversional Methods for the Processes Occurring in Glassy and Amorphous Materials
Publisher: Springer Netherlands
Date: 2012
TG-MS characterization of the reaction products of cadmium yellow and malachite artist’s pigments
Publisher: Springer Science and Business Media LLC
Date: 04-2007
Microscopic origins of the interface friction of organic films: The potential of vibrational spectroscopy
Publisher: Elsevier BV
Date: 03-1992
FT-NIR and DSC characterisation of water in opal
Publisher: Elsevier BV
Date: 12-2020
Thermal characterisation of autoclaved cement made with alumina-silica rich industrialwaste
Publisher: Springer Science and Business Media LLC
Date: 24-04-2006
Comparative study of the efficacy of fly ash and reactive aggregate powders in mitigating alkali-silica reaction
Publisher: Elsevier BV
Date: 2023
Effect of autoclaving temperature on calcium silicate-based building products containing clay-brick waste
Publisher: Springer Science and Business Media LLC
Date: 04-2007
Investigation of autoclaved cement systems with reactive MgO and Al2O3-SiO2 rich fired clay brick
Publisher: Thomas Telford Ltd.
Date: 10-2013
Abstract: Portland cement (PC) is one of the world's most important building materials, as it is a fundamental component of concrete. However, the manufacture of PC is highly energy intensive and leads to the emission of carbon dioxide (CO 2 ). One promising control measure is the use of industrial wastes and by-products as supplementary cementing materials (SCMs) in order to minimise PC consumption, thereby producing greener cement-based products. This study investigates mechanical properties and phase development of hydrothermally treated cement–ground quartz sand blends with the incorporation of fired clay-brick (CB) waste and reactive magnesia (MgO). The addition of CB waste in autoclaved PC–quartz mortar mixes showed that the alumina–silica rich CB waste was pozzolanic when the Al 2 O 3 accelerated formation and increased crystallinity of Al substituted 1·1 nm tobermorite, resulting in the observed strength gain. Autoclaved mortar specimens incorporating reactive MgO showed a reduction in strength with increasing MgO addition. This was a result of dilution when the relative proportion of PC available for the formation of the strength contributing hydration products including tobermorite is decreased.
A SIMS study of the transition elemental distribution between bands in banded Australian sedimentary opal from the Lightning Ridge locality
Publisher: Schweizerbart
Date: 21-04-2006
Alpha-beta Phase Re-transformation Kinetics In Nickel Sulphide
Publisher: Springer Science and Business Media LLC
Date: 1999
Reliability of AMBT and CPT in testing the effectiveness of SCM to mitigate alkali–silica reaction of field concrete
Publisher: Elsevier BV
Date: 03-2023
Effective Conversion of Amide to Carboxylic Acid on Polymers of Intrinsic Microporosity (PIM-1) with Nitrous Acid.
Publisher: MDPI AG
Date: 18-04-2018
The mathematical incorrectness of the integral isoconversional methods in case of variable activation energy and the consequences
Publisher: Springer Science and Business Media LLC
Date: 23-10-2013
Efficacy of SCMs to mitigate ASR in systems with higher alkali contents assessed by pore solution method
Publisher: Elsevier BV
Date: 04-2021
Development of shrinkage resistant microfibre-reinforced cement-based composites
Publisher: Walter de Gruyter GmbH
Date: 2012
DOI: 10.2478/S13531-011-0065-Y
Abstract: Different shrinkage types may cause serious durability dilemma on restrained concrete parts due to crack formation and propagation. Several classes of fibres are used by concrete industry in order to reduce crack size and crack number. In previous studies, most of these fibre types were found to be effective in reducing the number and sizes of the cracks, but not in shrinkage strain reduction. This study deals with the influence of a newly introduced type of polyethylene fibre on drying shrinkage reduction. The novel fibre is a polyethylene microfibre in a new geometry, which is proved to reduce the amount of total shrinkage in mortars. This special hydrophobic polyethylene microfibre also reduces moisture loss of mortar s les. The experimental results on short and long-term drying shrinkage as well as on several other properties are reported. The hydrophobic polyethylene microfibre showed promising improvement in shrinkage reduction even at very low concentrations (0.1% of cement weight).
A comparison of thermal- and solvent-induced relaxation of poly(ether ether ketone) using Fourier transform Raman spectroscopy
Publisher: Elsevier BV
Date: 1991
Influence of Limestone Mineral Addition in Cements on the Efficacy of SCMs in Mitigating Alkali-Silica Reaction Assessed by Accelerated Mortar Bar Test
Publisher: American Society of Civil Engineers (ASCE)
Date: 06-2021
Estimation of the curing rate of acrylamide used as a consolidant in heritage sandstone conservation
Publisher: Springer Science and Business Media LLC
Date: 19-03-2014
Synthesis and characterisation of cobaltite and ferrite spinels using thermogravimetric analysis and X-ray crystallography
Publisher: Springer Science and Business Media LLC
Date: 07-09-2011
Raman spectra of nickel(II) sulfide
Publisher: Elsevier BV
Date: 09-1998
Characterization of surface-modified poly(ethylene terephthalate) fibres by inverse gas chromatography
Publisher: Wiley
Date: 2000
DOI: 10.1002/1097-0126(200006)49:6<495::AID-PI391>3.0.CO;2-X
The effect of sampling conditions on the thermal decomposition of electrolytic manganese dioxide
Publisher: Springer Science and Business Media LLC
Date: 2004
FTIR Study of the Thermal Degradation of poly(vinyl alcohol)
Publisher: Springer Science and Business Media LLC
Date: 2001
Characterisation of the oxidation products of pyrite by thermogravimetric and evolved gas analysis
Publisher: Springer Science and Business Media LLC
Date: 2003
Evaluating the impact of curing temperature in delayed ettringite formation using electrochemical impedance spectroscopy
Publisher: Elsevier BV
Date: 05-2021
Mechanisms of Alkali-Silica Reaction Mitigation in AMBT Conditions: Comparative Study of Traditional Supplementary Cementitious Materials
Publisher: American Society of Civil Engineers (ASCE)
Date: 03-2022
Pigment characterisation in Australian rock art: a review of modern instrumental methods of analysis
Publisher: Springer Science and Business Media LLC
Date: 13-03-2017
Submicroscopic Evaluation Studies to Minimize Delayed Ettringite Formation in Concrete for a Sustainable Industry and Circular Economy
Publisher: Springer Nature Singapore
Date: 2023
DOI: 10.1007/978-981-99-3330-3_45
Abstract: The high cost of maintenance, repair and retrofitting of concrete infrastructure to keep these structures durable and serviceable is not sustainable, so the design process needs to consider all aspects of deterioration mechanism/s that can potentially occur in a concrete structure. The ideal solution should contribute to sustainability by enhancing the durability of concrete elements and supporting a circular economy. We studied delayed ettringite formation (DEF), a potential deterioration mechanism, including mitigation measures, in various heat-cured cementitious systems. The results showed that continuously connected pore/crack paths at the submicroscopic level favor the transportation of DEF-causing ions in heat-cured systems. DEF increases the chance of developing cracks, which is a durability concern. To mitigate DEF, fly ash produced from an Australian bituminous coal-burning power station was incorporated in the binder to support the circular economy concept. Changes in heat-cured cementitious systems were evaluated using expansion, electrical resistivity, dynamic modulus, and microstructural studies. The pozzolanicity of fly ash was found to greatly enhance the formation of denser calcium-silica-hydrate, which in turn restricted the transportation of DEF-causing ions at the submicron level, leading to less DEF occurrence and enhancement of the durability and sustainability of concrete in field structures.
Regeneration of Aromatic Carbonyl Compounds from the Corresponding Oximes Using Tetrapyridine Silver(II) Peroxydisulfate in Acetonitrile and Aqueous Media
Publisher: Informa UK Limited
Date: 04-02-2010
Characterization of the Nano- and Microscale Deterioration Mechanism of the Alkali–Silica Reaction in Concrete Using Neutron and X-ray Scattering Techniques: A Review
Publisher: Springer Nature Singapore
Date: 2023
DOI: 10.1007/978-981-99-3330-3_47
Abstract: Alkali–silica reaction (ASR) is one of the most recognized chemical reactions that lead to the deterioration and premature failure of concrete. The severity of ASR is largely dependent on the expansive nature of the reaction product (ASR gel). As such, it is important to expound the developed knowledge on the formation, structure, composition, and swelling mechanism of ASR gel, to provide a greater understanding of ASR deterioration and to facilitate the development of more reliable prediction and mitigation methods. We present a summary of existing methods for assessing ASR and the state-of-the-art techniques that use neutron and X-ray scattering methods to characterize the nano- and microstructural properties of concrete and elucidate the potential transport dynamics of reactants that determine the mechanism and extent of ASR.
Elemental analysis of Australian amorphous banded opals by laser-ablation ICP-MS
Publisher: Schweizerbart
Date: 20-08-2004
Cracking of Gem Opals
Publisher: MDPI AG
Date: 03-03-2023
DOI: 10.3390/MIN13030356
Abstract: The value of gem opals is compromised by their potential susceptibility to “crazing”, a phenomenon observed either in the form of whitening or cracking. To understand the latter, 26 opal s les were investigated and separated into 2 groups based on handling: “water-stored” opal s les, which are stored in water after extraction, and “air-stored” opal s les, which are stored in air for more than a year. To induce cracking, s les were thermally treated by staged heating and characterized using optical microscopy and Raman spectroscopy before and after cracking. For water-stored opals, cracking was initiated with moderate heating up to 150 °C, while for air-stored opals, higher temperatures, circa 300 °C, were required. In water-stored opals that cracked, polarized light microscopy revealed stress fields remaining around the cracks, and a red shift in the Raman bands suggested tensile stresses. These stresses were not observed in air-stored s les that cracked. Based on these observations, for air-stored s les, cracking was ascribed to super-heated water-induced decrepitation. By contrast, for water-stored s les, cracking was linked to drying shrinkage, which correlates with the anecdotal reports from the gem trade. We thus identify the physical origin of cracking, and by comparing it to current knowledge, we determine the factors leading to cracking.
Modelling clay materials used in artworks: an infrared spectroscopic investigation
Publisher: Springer Science and Business Media LLC
Date: 28-10-2019
DOI: 10.1186/S40494-019-0333-3
Abstract: Modelling clays are utilised by artists for their malleable properties. One of the challenges in managing collections containing such materials is the variety of commercial compositions available and, therefore, the variation in the requirements for storage and maintenance of such artefacts. The Art Gallery of New South Wales in Australia is responsible for the care of a range of artworks that contain modelling materials, some of which show detrimental property changes and there is concern for the longevity of such works. The aim of the current research is to determine the compositions of the modelling materials utilised in works produced by different artists in the gallery’s collection. Infrared spectroscopy was used to identify the main constituents of s les collected from the works of four different artists and a variety of material types were determined. Oil-based, air-hardening and polymer clays of varying composition were identified in the survey of artworks. Signs of deterioration in particular artworks were able to be characterised using spectroscopy, with the mechanisms identified including loss and oxidation of the oil component. Where a polymer clay was chosen by one artist, the distortion of the artwork was due to flow of the material over time and demonstrates the need for an understanding of the long term properties of the materials being used. The study has highlighted the need for conservators to have a detailed understanding of modelling materials to ensure the longevity of artworks containing this class of materials.
DSC characterisation of compression moulded PEEK-PTFE plaques
Publisher: Springer Science and Business Media LLC
Date: 2003
Xylene swelling of polycarbonate studied using Fourier transform Raman spectroscopy
Publisher: Elsevier BV
Date: 11-1995
Thermal properties of Australian sedimentary opals and Czech moldavites
Publisher: Springer Science and Business Media LLC
Date: 18-02-2010
Polymers in contemporary art objects at the Art Gallery of New South Wales: a study using infrared spectroscopy
Publisher: Informa UK Limited
Date: 31-08-2023
Thermal characterization of portland cement-magnesia blends
Publisher: Springer Science and Business Media LLC
Date: 06-2005
The characterisation of plastic used in a Gabo sculpture
Publisher: Elsevier BV
Date: 09-2000
Evaluation ofwaste perlite fines in the production of construction materials
Publisher: Springer Science and Business Media LLC
Date: 04-2007
A DSC study of the effect of lead pigments on the drying of cold pressed linseed oil
Publisher: Springer Science and Business Media LLC
Date: 03-2005
Non-expansive delayed ettringite formation in low sulphate and low alkali cement mortars
Publisher: Informa UK Limited
Date: 10-05-2022
Thermosalience Revealed on the Atomic Scale: Rapid Synchrotron Techniques Uncover Molecular Motion Preceding Crystal Jumping
Publisher: American Chemical Society (ACS)
Date: 17-02-2022
Potential of neutron powder diffraction for the study of solid triacylglycerols
Publisher: Elsevier BV
Date: 10-2019
Application of a Fickian model of diffusion to the dehydration of graded specimens of a precious Australian sedimentary opal derived from Coober Pedy
Publisher: Springer Science and Business Media LLC
Date: 10-06-2009
An investigation of model forensic bone in soil environments studied using infrared spectroscopy
Publisher: Wiley
Date: 06-08-2012
DOI: 10.1111/J.1556-4029.2012.02236.X
Abstract: Infrared spectroscopy has been used to examine changes to bone chemistry as a result of soil burial. Pig carcasses were buried as part of a controlled field study, and pig bone was used in soil environments established in the laboratory. The variables of species type, bone pretreatment, soil type and pH, moisture content, temperature, and burial time were investigated. The crystallinity index (CI) and the organic and carbonate contents of the bones were monitored. The data revealed decreasing trends in the organic and carbonate contents and an increase in the CI of the bone with burial time. An acidic soil environment and soil type are the factors that have the most influence on bone chemistry as a result of burial. The study demonstrates the potential of infrared spectroscopy as a straightforward method of monitoring the changes associated with aging of bones in a variety of soil environments.
The effect of thermal history on the morphology of nickel sulphide
Publisher: Springer Science and Business Media LLC
Date: 2003
Neutron diffraction of deuterated tripalmitin and the influence of shear on its crystallisation
Publisher: Elsevier BV
Date: 07-2019
DOI: 10.1016/J.CHEMPHYSLIP.2019.02.011
Abstract: This neutron diffraction study of deuterated tripalmitin has provided further insight into a forensic observation of the crystallisation of lipids under high-shear conditions. To achieve this, an experimental set up was designed to enable simultaneous rheological data from a Couette cell to be recorded with neutron powder diffraction, enabling the influence of shear on the polymorph transformation on cooling to be monitored in real time. Tripalmitin was observed to directly transform from a liquid phase to a β polymorph under the influence of shear. Although the liquid to β transition was not observed to be influenced by shear rate, the degree of crystallinity, qualitatively denoted by an increase in the sharpness of the diffraction peaks, was observed at higher shear rates. Evidence is also presented that the rate of cooling influences the ordering in the β-polymorph produced in zero shear conditions.
Assessment of wollastonite microfibre on drying shrinkage behaviour of cement-based composites
Publisher: CRC Press
Date: 26-11-2012
DOI: 10.1201/B15320-87
The estimation of pig bone age for forensic application using thermogravimetric analysis
Publisher: Springer Science and Business Media LLC
Date: 23-06-2009
A Fourier transform Raman spectroscopy study of water sorption by poly(vinyl alcohol)
Publisher: Elsevier BV
Date: 11-1997
Thermal characteristics of Australian sedimentary opals
Publisher: Springer Science and Business Media LLC
Date: 2002
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{\rtf1\ansi\ansicpg1250\deff0\deflang1038\deflangfe1038\deftab708{\fonttbl{\f0\froman\fprq2\fcharset238{\*\fname Times New Roman;}Times New Roman CE;}} \viewkind4\uc1\pard\f0\fs20 A pseudo-isothermal
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Related Organisations
Imperial College London
Location: United Kingdom of Great Britain and Northern Ireland
King's College London
Location: United Kingdom of Great Britain and Northern Ireland
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Linkage Projects - Grant ID: LP0348018
Start Date: 06-2003
End Date: 06-2006
Amount: $101,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0239647
Start Date: 2001
End Date: 12-2002
Amount: $290,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0668449
Start Date: 2006
End Date: 12-2006
Amount: $158,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Research Hubs - Grant ID: IH150100006
Start Date: 12-2016
End Date: 12-2023
Amount: $5,000,000.00
Funder: Australian Research Council
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