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Abstract
Advances in Complementary & Alternative medicine
Changes in a Forty-Year-Old Concrete: Some Chemical and Physical Observations in Itaipu Dam
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Open or CloseCláudio Neumann Junior1,2*, Ana Carolina P Santos1 and Étore F de Faria2
1Itaipu Binacional, Brazil
2UNILA, Universidade Federal da Integração Latino Americana, Brazil
*Corresponding author: Avenida Tancredo Neves, Itaipu Binacional, UNILA, Universidade Federal da Integração Latino Americana 6731 Foz do Iguaçu, Brazil
Submission: December 18, 2018; Published: January 30, 2019
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ISSN: 2637-7802Volume4 Issue1
Abstract
The long-term behavior of concrete can be influenced by its composition and environment exposure. Leaching is a chemical process of degradation caused by water, leading to dissolution of cement components, increasing the permeability and reducing mechanical properties. Backfill concrete with fly ash was used in Itaipu dam, in a region subjected to water flow. Chemical analyses have been done since the 1980’s and concrete samples were recently extracted to perform laboratory tests, showing increase in resistance, despite partial loss of calcium caused by leaching, by what it is understood as a localized small change, with no implications to the dam safety.
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