Abstract
During external sulphate attack, the penetration of sulphates within the material is the rate-limiting step. Thus laboratory tests can last a few years before giving usable results. It is possible to shorten the response time by stimulating the penetration of sulphates. One way to achieve that is to dry the material at 60 °C then to saturate it with a sulphate solution before the test. The impact of this thermal pre-conditioning on the sulphate attack phenomenology still remains unclear. Two external sulphate attack tests have been set on two mortar cylinders each. The monitoring of the degradation process made it possible to investigate the influence of the thermal pre-conditioning. The mechanism of external sulphate attack appeared similar for the two tests. Although the mortar cylinders with thermal pre-conditioning showed stronger degradation earlier according to certain parameters (mass, volume, radius), there was no difference regarding the beginning of the expansion.
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References
Neville A (2004) The confused world of sulfate attack on concrete. Cem Concr Res 34:1275–1296
Müllauer W, Beddoe RE, Heinz D (2013) Sulfate attack expansion mechanism. Cem Concr Res 52:208–215
Yu C, et al (2012) Comparison between expansion and microstructural changes of mortars under sulfate attack. In: Second international conference on microstructural—related durability of cementitious composites, Netherlands
Gollop RS, Taylor HFW (1996) Microstructural and microanalytical studies of sulfate attack: reactions of slag cement paste with sodium and magnesium sulfate solutions. Cem Concr Compos 26:1013–1028
Messad S (2009) Mise au point d’un essai de vieillissement accéléré à l’attaque sulfatique externe pour l’application du concept de performance équivalente dans le cadre de la norme NF EN 206-1. PhD thesis, université de Toulouse III—Paul Sabatier
Rozière E, Loukili A, El Hachem R, Gtrondin F (2009) Durability of concrete exposed to leaching and external sulphate attack. Cem Concr Res 39:1188–1198
El Hachem R, Rozière E, Grondin F, Loukili A (2012) New procedure to investigate external sulfate attack on cementitious materials. Cem Concr Compos 34:357–364
Planel D, Sercombre J, Le Bescop P, Adenot F, Torrenti J-M (2006) Long performance of cement paste during combined calcium leaching-external sulfate attack: kinetics and size effects. Cem Concr Res 36:137–143
Massaad G, Rozière E, Loukili A, Izoret L (2016) Advanced testing and performance specifications for the cementitious materials under external sulfate attack. Constr Build Mater 127:918–931
Yu C, Sun W, Skrivener K (2013) Mechanism of expansion of mortars immersed in sodium sulfate solutions. Cem Concr Res 43:105–111
Pivonka P, Hellmich C, Smith D (2004) Microscopic effects on chloride diffusivity of cement pastes—a scale transition analysis. Cem Concr Res 34:2251–2260
Nguyen PT, Amiri O (2016) Study of the chloride transport in unsaturated concrete: highlights of electrical double layer, temperature and hysteresis effects. Constr Build Mater 122:284–294
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Boudache, S., Rozière, E., Loukili, A., Colina, H. (2020). Influence of Thermal Preconditioning on the Mechanism of External Sulphate Attack. In: Menéndez, E., Baroghel-Bouny, V. (eds) External Sulphate Attack – Field Aspects and Lab Tests. RILEM Bookseries, vol 21. Springer, Cham. https://doi.org/10.1007/978-3-030-20331-3_6
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DOI: https://doi.org/10.1007/978-3-030-20331-3_6
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