Czasopismo
2007
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R. 12/74, nr 4
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165-178
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Thaumasite. Part 1: The route to current understanding
Języki publikacji
Abstrakty
Omówiono odkrycie naturalnego minerału thaumasyt i wyjaśnienie jego struktury. Kluczem do opracowania jego struktury były badania w podczerwieni przeprowadzone przez Moenkego jak również rentgenograficzne prace Laffaille'a z Protesem i Taylora z Edgem. Udokumentowały one nietypową, sześciokrotną koordynację krzemu przez tlen, lub grupy OH. Począwszy od 1960 roku thaumasyt stał się bardziej znany jako produkt w zniszczonym betonie. Główne mechanizmy korozji siarczanowej z utworzeniem thaumasytu zostały także przedstawione. Nowoczesne metody analizy stwarzają dobre warunki do identyfikacji thaumasytu w przyszłości. Trzeba podkreślić, że korozja siarczanowa z utworzeniem thaumasytu jest znacznie rzadsza od klasycznej korozji siarczanowej.
The history of natural mineral thaumasite and its structure examination was presented. Key, in gradual unfurling of proper structure of thaumasite was infrared examination by Moenke as well as X-ray crystallographic works of Laffaille and Protes together with Taylor and Egde. As a result the sixfold was established coordination of siliceous with oxygen/OH. Starting from 1960 year thaumasite became more generally known as a deterioration product of cement mortar and concrete. Main mechanisms of thaumasite sulphate attack was also discussed. Modern methods of analyses offer much improved resolution and the ability to identity thaumasite in the future. However thaumasite sulphate attack is much rarer in practice than normal sulphate attack.
Czasopismo
Rocznik
Tom
Strony
165-178
Opis fizyczny
Bibliogr. 50 poz., il.
Twórcy
autor
- Materials Chemistry Centre, UCL, London
Bibliografia
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- 28. R. A. Edge and H.F.W. Taylor: Crystal structure of thaumasite [Ca3Si(OH)6.12H2O] (SO4)(CO3). Acta Crystallographica B 27, 594-601 (1971).
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- 31. J. Bensted: Thaumasite - Un prodotto di deterioramento delle strutture di cemento indurito. / Thaumasite -A deterioration product of hardened cement structures. II Cemento 85, No. 1, 3-10 (1988).
- 32. J. Bensted: Laser Raman spectroscopy and cement hydration. Colloquium on Techniques for Characterisation of Cement Hydration - New and Old Techniques, Society of Chemical Industry, London, 15 April 1999. 19pp. SCI, London (1999).
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- 34. J. Bensted: Thaumasite - direct, woodfordite and other possible formation routes. Cement & Concrete Composites 25, 873-877 (2003).
- 35. R. N. Swamy and A. F. Naaman (Eds.): Cement & Concrete Composites, Special Issue: Thaumasite in Cementitious Materials, (Guest Eds. D. Macphee and S. Diamond) 25, No. 8 (2003).
- 36. L. De Ceukelaire: Ettringiet, thaumasiet en ... kweethetniet. Cement (Amsterdam) No. 5, 30-33 (1990).
- 37. L. De Ceukelaire: Mineralogie van beton in verband met verwerings-yerschijnselen. Doctoraatthesis, Rijksuniversiteit Gent, Ghent, Belgium (1989).
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- 40. M. Mulenga: Zum Sulfatangriff auf Beton und Mortel einschließlich der Thaumasitbildung. Dissertation, Bauhaus-Universität Weimar (2002).
- 41. F. Bellmann and J. Stark: Ein Beitrag zum Chemismus der Thaumasitbildung. Tagungsband der 15. ibausil des FIB der Bauhaus-Universität Weimar, 24-26 September 2003, pp. 2/659-671. Weimar (2003).
- 42. G. Collett, N. J. Crammond, R.N. Swamy and J. H. Sharp: The role of carbon dioxide in the formation of thaumasite. Cement and Concrete Research 34 (9), 1599-1612 (2004).
- 43. F. Bellmann: On the formation of thaumasite CaSiO3 CaSO4 CaCO3 15H2O: Part 1. Advances in Cement Research 16, No. 2, 55-60 (2004).
- 44. F. Bellmann: On the formation of thaumasite CaSiO3, CaSO4 CaCO3, 15H2O: Part 2. Advances in Cement Research 16, No. 3, 89-94 (2004).
- 45. J. Bensted: Discussion on paper 'F. Bellmann: On the formation of thaumasite CaSiO3 CaSO4 CaCO3 15H2O: Part II'. Advances in Cement Research 18, No. 3, 129-131, 133-134 (2006). Reply by F. Bellmann: ibid. 18, No. 3, 131-134(2006).
- 46. S. Köhler, D. Heinz and L. Obernas: Effect of ettringite on thaumasite formation. Cement and Concrete Research 36 (4), 697-706 (2006).
- 47. J. Małolepszy and R. Mróz: Warunki powstowania thaumasytu. / Conditions of thaumasite formation. Cement-Wapno-Beton No. 2, 93-101 (2006).
- 48. K. Luke: Personal communication (1998).
- 49. J. Bensted: Thaumasite sulphate attack - its scientific background and ramifications in construction, in: W. Kurdowski and W. Gawlicki (Eds.), Kurdowski Symposium - Science of Cement and Concrete, Kraków, 20-21 June 2001, pp. 189-198. Wydawnictwo Naukowe "Akapit", Kraków (2001).
- 50. J. Bensted: Scientific background to thaumasite formation in concrete. World Cement Research 29, No. 11, 102-105 (1998).
Typ dokumentu
Bibliografia
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