The stage of hydration of hardened cement paste (hcp) has been investigated by small-angle neutron scattering (SANS) from the beginning of the hydration process up to 28 days. A special mixture of HnO and D.O eliminating the various influences of the ~linker ~hases was used as mixing water. SANS-exp
Small-angle neutron scattering on hardened cement paste and various substances for hydration
✍ Scribed by F. Häuβler; F. Eichhorn; H. Baumbach
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 693 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0008-8846
No coin nor oath required. For personal study only.
✦ Synopsis
Clinker minerals, dry Portland cement and hydrating Portland cement paste were studied by small-angle neutron scattering.
For a clear characterization of the scattering results the clinker minerals and the Portland cement powder were separated into several fractions of grain sizes. Observing the shape of the scattering curves taken at different times after the onset of hydration, an evolution of the internal structure in the hardened cement paste is detected. Evaluations carried out in the Porod region give yield information on an inner surface of the material under investigation.
📜 SIMILAR VOLUMES
Finely divided fumed silica (Aerosil) has been used as a model substance to interpret the change in fractal dimension and specific surface of hardened cement paste (hcp) with relative humidity. Hcp is essentially a surface fractal at relative humidities below ca. 40% where the specific surface dimin