Effect of Leaching on pH of Surrounding Water
When concrete structures—such as pier supports—are placed in water, they can have a detrimental effect on the surrounding environment by causing the pH to rise. This rise in pH can harm and kill animal and plant life. The concentration of hydroxyl ions leached from concrete can be affected by a number of factors, including cement type, shape of structure, ratio of surface area and volume, and the flow of the water. This paper presents the results of a research project that investigated three mixtures: 100% ordinary portland cement (OPC), 30% pulverized fly ash (PVA), and 65% ground-granulated blast-furnace slag (GGBS). Tests were conducted in both stagnant and flowing water using a range of specimen geometries and sizes. The results showed that the mixture, volume/surface area, and geometry of the specimen can affect both the rate of leaching and the cumulative number of moles of hydroxyl ions leached.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
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Supplemental Notes:
- Abstract reprinted with permission from the American Concrete Institute.
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Authors:
- Law, David W
- Evans, Jane
- Publication Date: 2013
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 291-296
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Serial:
- ACI Materials Journal
- Volume: 110
- Issue Number: 3
- Publisher: American Concrete Institute (ACI)
- ISSN: 0889-325X
- Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx
Subject/Index Terms
- TRT Terms: Bridge piers; Concrete structures; Durability; Environmental impacts; Leaching; pH value; Water areas
- Subject Areas: Bridges and other structures; Environment; Highways; Materials; I15: Environment; I32: Concrete;
Filing Info
- Accession Number: 01484383
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 19 2013 10:47AM