A Concrete Performance Test for Delayed Ettringite Formation: Part I Optimisation
Delayed ettringite formation (DEF) is a rare internal swelling reaction of concrete that, in a wet environment, may considerably reduce durability of a structure or a member that has been prefabricated in a factory. As a result of a large number of studies, the main causes of this problem have been established and this paper proposes a test method to predict the susceptibility of a concrete to DEF and provide long-term protection against this hazard. After an examination of the feasibility of a test based on wetting and drying cycles, results of an optimization study based on a factorial experimental plan are provided. The test is in 4 stages: concrete manufacture, a heat treatment that simulates steam curing in a factory or the heating that occurs in mass cast in-situ concrete, wetting and drying cycles, and monitoring the longitudinal expansion of specimens immersed in water.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
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Supplemental Notes:
- Abstract reprinted with permission from Elsevier
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Authors:
- Pavoine, Alexandre
- Divet, Loic
- Fenouillet, Stephane
- Publication Date: 2006-12
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 2138--2143
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Serial:
- Cement and Concrete Research
- Volume: 36
- Issue Number: 12
- Publisher: Elsevier
- ISSN: 0008-8846
- Serial URL: http://www.sciencedirect.com/science/journal/00088846
Subject/Index Terms
- TRT Terms: Concrete structures; Durability; Ettringite; Expansion; Optimization; Structural deterioration and defects; Structural members; Swelling; Wetting and drying tests
- Uncontrolled Terms: Sulfate attack
- Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;
Filing Info
- Accession Number: 01042245
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 16 2007 6:52PM