Thermal deformation of loaded concrete during thermal cycles from 20°C to −165°C
✍ Scribed by J. Planas; H. Corres; M. Elices; R. Chueca
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 306 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0008-8846
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✦ Synopsis
Communicated by Z.P. Bazant) (Received Nov. l], 1983) :~STRACT
Thermal deformation of concrete samples has been measured. Unloaded water-saturated concrete exhibits a corm~lex strain behaviour durin~ thermal cycles, characterized by dilatation coolin~ and an irreversible expansion reheating, l~aded water-saturated concrete behaves in a different way. The transition region is reversed -with respect to unloaded samples-and almost dissaoears, when compressive stress of 15 ~a is a~plied. Also an irreversible compressive deformation is bound after reheating. A oual]tative explanation of such effects, assumin9 that microcrackin~ is the dominant deformation mechanism in the transition range, is offered. Further research is needed alon~ this direction.