Final Report Assessment Of Potential Phosphate Ion Cementitious Materials Interactions
Download Final Report Assessment Of Potential Phosphate Ion Cementitious Materials Interactions full books in PDF, epub, and Kindle. Read online free Final Report Assessment Of Potential Phosphate Ion Cementitious Materials Interactions ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Final Report - Assessment of Potential Phosphate Ion-Cementitious Materials Interactions
Author | : D. Naus |
Publisher | : |
Total Pages | : 72 |
Release | : 2007 |
Genre | : Cement |
ISBN | : |
Download Final Report - Assessment of Potential Phosphate Ion-Cementitious Materials Interactions Book in PDF, Epub and Kindle
The objectives of this limited study were to: (1) review the potential for degradation of cementitious materials due to exposure to high concentrations of phosphate ions; (2) provide an improved understanding of any significant factors that may lead to a requirement to establish exposure limits for concrete structures exposed to soils or ground waters containing high levels of phosphate ions; (3) recommend, as appropriate, whether a limitation on phosphate ion concentration in soils or ground water is required to avoid degradation of concrete structures; and (4) provide a "primer" on factors that can affect the durability of concrete materials and structures in nuclear power plants. An assessment of the potential effects of phosphate ions on cementitious materials was made through a review of the literature, contacts with concrete research personnel, and conduct of a "bench-scale" laboratory investigation. Results of these activities indicate that: no harmful interactions occur between phosphates and cementitious materials unless phosphates are present in the form of phosphoric acid; phosphates have been incorporated into concrete as set retarders, and phosphate cements have been used for infrastructure repair; no standards or guidelines exist pertaining to applications of reinforced concrete structures in high-phosphate environments; interactions of phosphate ions and cementitious materials has not been a concern of the research community; and laboratory results indicate similar performance of specimens cured in phosphate solutions and those cured in a calcium hydroxide solution after exposure periods of up to eighteen months. Relative to the "primer," a separate NUREG report has been prepared that provides a review of pertinent factors that can affect the durability of nuclear power plant reinforced concrete structures.
Final Report - Assessment of Potential Phosphate Ion-Cementitious Materials Interactions Related Books
Pages: 72
Pages: 332
Pages: 1112
Pages: 230
Pages: 471