期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 67, 期 -, 页码 74-80出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2013.10.032
关键词
Concrete cracking; Fly ash; Silica fume; Chloride penetration; Service life; Life cycle assessment (LCA)
资金
- Ghent University
- Agency for Innovation by Science and Technology (IWT)
Service life predictions for concrete exposed to chloride-induced corrosion usually result from durability tests performed on uncracked concrete. Chloride migration coefficients for uncracked concrete should only be used if the structure can be considered as uncracked. The seemingly uncracked condition requires crack widths below 0.1 mm. The extra reinforcing steel to achieve this in concrete slabs, results in a 30-43% increase of the global warming potential. Fly ash + silica fume concrete may be preferred because of its low 28 day migration coefficient (3.4 x 10(-12) m(2)/s), its long service life (>100 years) and its autogenous healing ability. (C) 2013 Elsevier Ltd. All rights reserved.
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