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Resistant to sulphate attack of high performance fibre concrete with the addition of slag
Języki publikacji
Abstrakty
W wodach gruntowych, a także w ściekach i wodach morskich występują często różne roztwory związków siarczanowych. Roztwory te są agresywne w stosunku do betonu i reagują z hydratami zaczynu cementowego, co może powodować ekspansję, a nawet utratę właściwości wiążących fazy C-S-H. W pracy przedstawiono badania dwóch betonów wysokowartościowych z dodatkiem stalowych włókien, z cementu portlandzkiego oraz ze spoiwa, w którym 15% cementu zastąpiono żużlem wielkopiecowym. W oparciu o badania wytrzymałości na zginanie i ściskanie, podciągania kapilarnego, porowatości i absorbcji wody stwierdzono, że próbki tych betonów są odporne na działanie nasyconego roztworu gipsu w wodzie. Po 24 miesiącach działania roztworu gipsu stwierdzono jednak początek pewnych zmian mikrostruktury, oznaczającej początek procesu korozyjnego betonu, nie zawierającego żużla wielkopiecowego.
A variety of soluted sulphates are often found in groundwater, wastewater or seawater. These sulphate solutions are aggressive for concrete and react with cement paste hydrates, which can cause expansion and even loss of the binding properties of C-S-H phase. Two high performance concretes reinforced with steel fibres, produced of Portland cement or of binder in which 15% of cement was replaced by blastfurnace granulated slag, were used in this work. On the basis of flexural and compressive strength, as well as capillary suction, porosity and water absorption measurement of concrete samples cured in saturated gypsum solution it was found that they are resistant in this condition. After 24 months of gypsum solution attack some changes of microstructure were found, which are the beginning of corrosion of concrete without slag.
Wydawca
Czasopismo
Rocznik
Tom
Strony
295--303
Opis fizyczny
Bibliogr. 18 poz., il., tab.
Twórcy
autor
- Department of Architecture, Faculty of Building Engineering, University of Tizi Ouzou, Algeria
autor
- University of Boumerdes, Algeria
autor
- Laboratory of Civil Engineering and Mechanics, INSA Rennes, France
autor
- Laboratory of Civil Engineering and Mechanics, INSA Rennes, France
Bibliografia
- 1. Technical and scientific newsletter on the materials, sulfur, LERM INFOS n°19.
- 2. GCI- 714, Civil Engineering Course “durability and concrete repair“, University of Sherbrooke, Canada, Internet, (2008).
- 3. J. Bensted, Cement Wapno Beton, 74, 5, 248 (2007).
- 4. R. S. Gollob, H. F. W. Taylor, Cem. Concr. Res., 24, 735 (1994).
- 3. N. Petrov, M. Thibault, A.Tagnit-Hamou, “External and internal attacks by sulphates, similarities and differences,” 1st International Conference on Technology and durability of concrete, USTHB, Algiers, Algeria, 24-26 May (2004).
- 4. M. R. Khelifa, Effect of external sulphate attack on the durability of self-compacting concrete, PhD thesis, (2009).
- 5. P-C. Aïtcin, High Performance Concrete, Eyrolles (2001).
- 6. G. Escadeillas, The éco-materials in the construction: stakes and perspectives, seventh edition of the scientific Days of the French-speaking Regrouping for research and the formation on the concrete (RF) 2B (2006).
- 7. Y. Maltais, Survey of the evolution of the degree of hydration of cements and the development of the mechanical resistances of mortars and concretes submitted to different temperatures of mûrissement, Memory of mastery, University Laval, Quebec, Canada, p. 188, (1996).
- 8. L. Divet, How to protect of the reactions sulfatique in the concretes. Bulletin of the laboratories of the bridges and pavements. 240. September 2002, réf. 4447, p. 87 (2002).
- 9. R. Chaid, Formulation, characterization and durability of the BHP to the additions local cimentious, thesis of doctorate, polytechnic national School, Algiers 2006.
- 10. A. Bessa, Study the contribution of mineral additions to the physical, mechanical and durability of mortars, PhD, University of Cergy- Pontoise, France 2004.
- 11. Recommendation AFREM Concretes. Determination of the apparent density and the porosity accessible to the water “. GranDuBé, under the direction of Ginette ARLIGUIE and Hugues HORMAIN (2007).
- 12. W. Ladaoui, Experimental Survey of the long-term behavior of the BHP destined to the works of storage of the radioactive garbage, Thesis of doctorate, University of Toulouse III-Paul Sabatier, 2 (2010).
- 13. R. Duval, Durability reinforcement and concrete cover, in: The durability of concrete by Baron J. Olivier and J -P, press the ENPC, Paris 1992.
- 14. R. S. Gollob, H. F. W. Taylor, Cem. Concr. Res., 24, 735 (1994).
- 15. A. Bukowiecki, Schweizerische Bauzeitung, 66, 856 (1968).
- 16. K. K. Sagoe-Crentsil, F. P. Glasser, “Corrosion of Reinforcement in Concrete” [Ed. C.L. Page, K.W. Treadaway, P. B. Bamforth] p. 74, Elsevier Science Publ., London 1990.
Uwagi
Błąd w numeracji bibliografii
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-30baa8d2-bcf6-4023-9c6c-1438328dc89b