Multi-scale analysis of cement pastes with nanosilica addition
Source abstract
Abstract
The effect of the addition of nanosilica on the properties of cement pastes after 28 d of hydration was studied in a multi-scale approach through X-ray diffraction, thermal analysis, nitrogen adsorption analysis, infrared spectroscopy, nuclear magnetic resonance (NMR) spectroscopy and compressive strength tests. The results showed an increase in strength resulting from the pozzolanic nature of the nanosilica, the reduction and refinement of the paste porosity and also the increase of the of calcium-silicate-hydrate gel polymerisation with the addition. Furthermore, NMR spectra suggested that the presence of nanosilica produces an inclusion of the Al3+ion in the gel structure.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Tenured scientist, Institute of Construction Science ‘Eduardo Torroja', CSIC, Madrid, Spain
Researcher, Tecnalia, Derio, Spain
Senior specialised technician, Institute of Construction Science ‘Eduardo Torroja', CSIC, Madrid, Spain
Senior scientist, Institute of Construction Science ‘Eduardo Torroja', CSIC, Madrid, Spain
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