Cement-aggregate compatibility and structure property relationships including modelling
The role of aggregate, and its interface with cement paste, is discussed with a view toward establishing models that relate structure to properties. Both short (nm) and long (mm) range structure must be considered. The short range structure of the interface depends not only on the physical distribution of the various phases, but also on moisture content and reactivity of aggregate. Changes that occur on drying, i.e. shrinkage, may alter the structure which, in turn, feeds back to alter further drying and shrinkage. The interaction is dynamic, even without further hydration of cement paste, and the dynamic characteristic must be considered in order to fully understand and model its contribution to properties. Microstructure and properties are two subjects which have been pursued somewhat separately. This review discusses both disciplines with a view toward finding common research goals in the future. Finally, comment is made on possible chemical reactions which may occur between aggregate and cement paste.
- Research Organization:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- FG02-91ER45460
- OSTI ID:
- 10191470
- Report Number(s):
- CONF-9211267-1; ON: DE93040835; CNN: Grant DMR-8808432-01
- Resource Relation:
- Conference: 9. international congress of the chemistry of cement,New Delhi (India),23-28 Nov 1992; Other Information: PBD: 15 Jul 1993
- Country of Publication:
- United States
- Language:
- English
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