| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Geiker, Mette Rica
Norwegian University of Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (40/40 displayed)
- 2023X-ray micro-tomographic imaging and modelling of saline ice properties in concrete frost salt scaling experimentscitations
- 2020Durability of cracked SFRC exposed to wet-dry cycles of chlorides and carbon dioxide – Multiscale deterioration phenomenacitations
- 2019Coupled mass transport, chemical, and mechanical modelling in cementitious materials: A dual-lattice approach
- 2019Coupled mass transport, chemical, and mechanical modelling in cementitious materials: A dual-lattice approach
- 2019Sulfate resistance of calcined clay – limestone – Portland cementscitations
- 2019Screening Untreated Municipal Solid Waste Incineration Fly Ash for Use in Cement-Based Materials – Chemical and Physical Properties
- 2017Screening of Low Clinker Binders, Compressive Strength and Chloride Ingress
- 2017Coupled hygrothermal, electrochemical, and mechanical modelling for deterioration prediction in reinforced cementitious materials
- 2017Friedel's salt profiles from thermogravimetric analysis and thermodynamic modelling of Portland cement-based mortars exposed to sodium chloride solutioncitations
- 2016Experimental studies and thermodynamic modeling of the carbonation of Portland cement, metakaolin and limestone mortarscitations
- 2016Propagation of steel corrosion in concrete: Experimental and numerical investigationscitations
- 2015Multi-physical and multi-scale deterioration modelling of reinforced concrete part II: Coupling corrosion and damage at the structural scale
- 2015Multi-physics and multi-scale deterioration modelling of reinforced concrete part I: Coupling transport and corrosion at the material scale
- 2014Penetration of corrosion products and corrosion-induced cracking in reinforced cementitious materialscitations
- 2014Electrodialytically treated MSWI APC residue as substitute for cement in mortar
- 2014Penetration of corrosion products and corrosion-induced cracking in reinforced cementitious materials: Experimental investigations and numerical simulationscitations
- 2014Determination of ice content in hardened concrete by low-temperature calorimetry:Influence of baseline calculation and heat of fusion of confined watercitations
- 2014Observations on the electrical resistivity of steel fibre reinforced concretecitations
- 2012Measuring the corrosion rate of steel in concrete – effect of measurement technique, polarisation time and currentcitations
- 2012Numerisk modellering af formfyldning ved støbning i selvkompakterende beton
- 2011Modeling moisture ingress through simplified concrete crack geometries
- 2011The design of an instrumented rebar for assessment of corrosion in cracked reinforced concretecitations
- 2011A non-destructive test method to monitor corrosion products and corrosion-induced cracking in reinforced cement based materials
- 2011Monitoring reinforcement corrosion and corrosion-induced cracking using non-destructive x-ray attenuation measurementscitations
- 2011Monitoring reinforcement corrosion and corrosion-induced cracking using non-destructive x-ray attenuation measurementscitations
- 2009Modelling the influence of steel fibres on the electrical resistivity of cementitious composites
- 2008Microstructure engineering of Portland cement pastes and mortars through addition of ultrafine layer silicatescitations
- 2008Hydration of Portoguese cements, measurement and modelling of chemical shrinkage
- 2007Prediction of chloride ingress and binding in cement pastecitations
- 2007Computational modeling of concrete flow:General overviewcitations
- 2007The Wedge Splitting Test: Influence of Aggregate Size and Water-to-Cement Ratio
- 2007Effect of mixing on properties of SCC
- 2006Photogrammetric Assessment of Flexure Induced Cracking of Reinforced Concrete Beams under Service Loads
- 2006On the effect of mixing on property development of cement pastes
- 2006Preliminary investigation of the effect of air-pollution-control residue from waste incineration on the properties of cement paste and mortar
- 2005Corrosion of Steel in Concrete – Potential Monitoring and Electrochemical Impedance Spectroscopy during Corrosion Initiation and Propagation
- 2005The effect of form pressure on the air void structure of SCC
- 2004Axi-Symmetric Simulation of the Slump Flow Test for Self-Compacting
- 2003Chloride diffusion in partially saturated cementitious materialcitations
- 2002The effect of measuring procedure on the apparent rheological properties of self-compacting concretecitations
Places of action
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article
Microstructure engineering of Portland cement pastes and mortars through addition of ultrafine layer silicates
Abstract
Pozzolanic submicron-sized silica fume and the non-pozzolanic micron- and nano-sized layer silicates (clay minerals) kaolinite, smectite and palygorskite have been used as additives in Portland cement pastes and mortars. These layer silicates have different particle shape (needles and plates), surface charge, and size (micron and nano). The structure of the resulting cement pastes and mortars has been investigated by atomic force microscopy (AFM), helium porosimetry, nitrogen adsorption (specific surface area and porosity), low-temperature calorimetry (LTC) and thermal analysis. The main result is that the cement paste structure and porosity can be engineered by addition of selected layer silicates having specific particle shapes and surface properties (e.g., charge and specific surface area). This seems to be due to the growth of calcium-silicate hydrates (C-S-H) on the clay particle surfaces, and the nano-structure of the C-S-H depends on type of layer silicate. The effect of layer silicate addition is most pronounced for palygorskite and smectite having the largest surface area and negative charges on the particle surfaces. The cement pastes containing palygorskite and bentonite have, in comparison to the pure cement pasta and the paste containing kaolinite, a more open pore structure consisting of fine pores. Silica fume paste contains a significant amount of closed pores. As a secondary result, it is demonstrated that both the degree and duration of sample drying strongly modifies the structure of the cementitious materials under investigation.