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Mineralogical, Phys...
Mineralogical, Physical and Chemical Characterization of Cementitious Materials Subjected to Accelerated Decalcification by an Electro-Chemical Method
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- Babaahmadi, Arezou, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Tang, Luping, 1956 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Abbas, Zareen, 1962 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Nordic Concrete Research. - 0800-6377. ; 1/2014:49, s. 181-198
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Abstract
Ämnesord
Stäng
- To facilitate the service life predictions regarding durability of nuclear waste repositories acceleration methods enhancing the decalcification process are needed. In this study an electro-chemical migration method to accelerate leaching of calcium from cementitious specimens of sizes 50×100Ø and 75×50Ø mm is presented. The mineralogical, physical and chemical properties of degraded samples are characterized. The results demonstrate that up to 70% decrease in strength, 50 % decrease in E-modulus, 90 % increase in gas permeability, at least 70% increase in chloride diffusion coefficient and 70 % increase in pore volume could be expected due to leaching of portlandite from concrete.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering (hsv//eng)
Nyckelord
- Mineralogical properties
- Mechanical Properties
- Acceleration method
- Permeability
- Diffusion
- Service life
- Calcium leaching
- Adsorption
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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