Evaluation and Gradation of Simultaneous Damage in Concrete Affected by Alkali-Silica Reaction and Sulfate Attack
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The concrete are considered as durable materials. Although, can be produced some interactions between the constituents inside the concrete and between the concretes with the environment that can induce the development of internal reactions. Some of these reactions development new products with higher volume than the original ones and promote the expansion and the cracks formation. Two of the more common internal degradation processes are alkali-silica reactions and sulfate attack. Usually these processes are considered separately, but in some cases these phenomenons shown together in the same concrete. On the other hand it is difficult the correct diagnosis of these degradation processes except by micro-structural analysis with electron microscopy and microanalysis techniques. But just the diagnosis it is not enough to know the state of one concrete structure. The experience in analysis and diagnosis of a lot of damage concrete structures permits to determine the grade of damage and assign a level of damage based on the microstructural studies. Finally, different microstructures, extension and localization of reactions products are used to define different levels of damage from 1 to 5 for concrete affected by alkali-silica reaction and sulfate attack.
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E. Menéndez, Analysis of concrete structures affected by alkali-silica reaction, sulfate attack and frost-drawing cycles (in spanish) (IECA, 2010).
British Cement Association, The diagnosis of alkali-silica reaction. (Report of a working party, 1988).
D.W. Hobbs, Alkali-silica reaction in concrete (Thomas Telford, 1988).
G. West, Alkali aggregate reaction in concrete roads and bridges (Thomas Telford, 1996)
G. E. Geoffrey, M.G. Alexander, Alkali-aggregate reaction and structural damage in concrete (CRC Press, 2011).
J. Skalny, J. Marchand, I. Odler, Sulfate attack on concrete (Taylor & Francis, 2002).
K. Scrivener, J. Skalny, Internal sulfate attack and delayed ettringite formation (RILEM Publications S.A.R.I, 2002).
M. D. A. Thomas, T. Ramlochan, Field cases of delayed ettringite formation, RILEM Workshop on Internal Sulfate Attack and Delayed Ettringite Formation, pp. 85-97, Villars (Switzerland),September 2002.
E. Menéndez, Cracking and sulfate attack in field concrete in Spain, RILEM Workshop on Internal Sulfate Attack and Delayed Ettringite Formation, pp. 127-138, Villars (Switzerland),September 2002.
P. E. Stutzman, Deterioration of Iowa Highway Concrete Pavements. A Petrographic Study (NIST, 1999).
S. Jacobsen, J. Lindgard, L. Fritz, Frost dilation measurements on concrete cores from dam with ASR, Proceedings on the International Congress on Alkali-Aggregate Reaction, pp.131-142, Thondheim (Noway), June 2008.
P. Tepponen, B. E. Eriksson, Damages in concrete railway sleepers in Finland, Nordic Concrete Research, Vol. 6: 199-209, 1987.
Shayan G. W. Quick, Microscopic features of cracked and uncracked concrete railway sleepers, ACI Materials Journal, Vol. 89: 348-361, 1992.
R. E. Oberholster, H. Maree, J. H. B. Brand, Cracked prestressed concrete railway sleepers: Alkali-Silica Reaction or Delayed Ettringite Formation, Proceedings of the 9th International Conference of Alkali-Aggregate Reaction in Concrete, pp.739-749, London (UK), 1992.
E. Menéndez, A. Gil, A. B. Martín, B. Aldea, C. Marquez, Analysis of concrete dams affected by internal expansive processes. Differences and similarities between internal sulfate attack and alkali-aggregate reaction (in spanish), Advance in Security and Durability, (Fundetel, 2011, pp.283-306).
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