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Abstracts
Positron annihilation experiments were carried out on a Portland cement paste one year aged, which was subjected to cycles of dessiccation and subsequent water resaturation, in order to study possible changes of the porosity. Analysis of the annihilation time spectra suggests that drying and rewetting treatments do not induce irreversible modifications in the configuration of the finest gel pores.
Discipline
- 71.60.+z: Positron states(for positron annihilation, see 78.70.Bj)
- 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
- 81.05.Rm: Porous materials; granular materials(for granular superconductors, see 74.81.Bd)
Journal
Year
Volume
Issue
Pages
345-349
Physical description
Dates
published
2001-03/04
received
2000-09-18
Contributors
author
- Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Politecnico di Milano, 20133 Milan, Italy
author
- Dipartimento di Chimica Industriale ed Ingegneria Chimica "G. Natta", Politecnico di Milano, 20133 Milan, Italy
author
- Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Politecnico di Milano, 20133 Milan, Italy
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv99n305kz