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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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Zhu, Wenzhong
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2017Modification of various properties of HfO2 thin films obtained by changing magnetron sputtering conditionscitations
- 2017Enhanced erosion performance of cold spray co-deposited AISI316 MMCs modified by friction stir processingcitations
- 2016Impact of heat exposure (fire damage) on the properties of sandstone
- 2015Investigation of structural, optical and micro-mechanical properties of (NdyTi1-y)O-x thin films deposited by magnetron sputteringcitations
- 2015Influence of interfacial transition zone on engineering properties of the concrete manufactured with recycled ceramic aggregatecitations
- 2015Ocean acidification alters the material properties of Mytilus edulis shellscitations
- 2014Influence of interfacial transition zone on engineering properties of the concrete manufactured with recycled ceramic aggregatecitations
- 2013Examples for nanotechnological applications in the energy sector
- 2012Correlation of Ca/Si and micromechanical properties in leached grey and white cement pastes
- 2011Mapping of mechanical properties of cement paste microstructures
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document
Correlation of Ca/Si and micromechanical properties in leached grey and white cement pastes
Abstract
Grey and white Portland cement pastes were prepared and hydrated for 28 days and then partially calcium leached in a 6M ammonium nitrate solution. The samples were then subjected to micromechanical and compositional analysis. Polished surfaces were interrogated using nanoindentation for Young’s Modulus and Hardness. Indents and hydration structures were then imaged in a FESEM, and EDS applied for elemental analysis across a traverse from the exterior to interior of the samples to ascertain the degree of change to Ca/Si in non-degraded and degraded portions of samples. A good agreement is seen between Ca/Si and mechanical properties. The microstructure of the degraded parts shows evidence of increased porosity and alteration to unhydrated binder components. Adequate sample preparation was a critical factor for nanoindentation, to ensure high flatness of the sample surface prior to testing. This results also in an improvement in SEM imaging, and phase discrimination.