Microscopic observations of sites and forms of ettringite in the microstructure of deteriorated concrete

Y.  Ando; H.  Shinichi; T.  Katayama; K.  Torii

doi:10.3989/mc.2022.15521

Autores/as

Y. Ando Taiheiyo Consultant Co. Ltd. https://orcid.org/0000-0003-2775-7938
H. Shinichi Taiheiyo Consultant Co. Ltd. https://orcid.org/0000-0003-4704-9939
T. Katayama Katayama Petrographic Consulting Office https://orcid.org/0000-0001-6238-6744
K. Torii Kanazawa Branch, Central Nippon Highway Engineering Nagoya Ltd. https://orcid.org/0000-0002-0835-8512

DOI:

https://doi.org/10.3989/mc.2022.15521

Palabras clave:

Reacción álcali-sílice, Formación de etringita diferida (DEF), Microscopía electrónica de barrido (SEM), Etringita, Petrografía

Resumen

La determinación de la formación de la etringita diferida (DEF) en el hormigón endurecido, basado simplemente en la identificación de la etringita a través de microscopía electrónica o difractometría de rayos X en polvo, puede ser imprecisa debido a la alta probabilidad de ignorar otros posibles fenómenos de deterioro. La simple presencia de etringita puede ser fácilmente malinterpretada como una indicación de DEF, mientras que la causa real del deterioro puede deberse a una reacción álcali-sílice (ASR). Este trabajo identifica las causas de deterioro y presenta diferentes factores de formación de etringita basados en los resultados petrográficos, la profundidad de la carbonatación, las proporciones de mezcla del hormigón, la temperatura de curado, y las condiciones ambientales y no ambientales. Se comprobó que el deterioro de las muestras era atribuible al fenómeno de ASR, excepto en el caso del hormigón prefabricado donde se observó el fenómeno de DEF.

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Citas

Taylor, H.F.W.; Famy, C.; Scrivener, K.L. (2001) Delayed ettringite formation. Cem. Concr. Res. 31 [5], 683-693. https://doi.org/10.1016/S0008-8846(01)00466-5

Heinz, D.; Ludwig, U. (1987) Mechanism of secondary ettringite formation in mortars and concretes subjected to heat treatment. Concrete durability. ACI SP-100. 2, 2059-2071.

Scrivener, K.L.; Taylor, H.F.W. (1993) Delayed ettringite formation: A microstructural and microanalytical study. Adv. Cem. Res. 5 [20], 139-146. https://doi.org/10.1680/adcr.1993.5.20.139

Johansen, V.; Thaulow, J.; Skalny, J. (1993) Simultaneous presence of alkali-silica gel and ettringite in concrete. Adv. Cem. Res. 5 [17], 23-29. https://doi.org/10.1680/adcr.1993.5.17.23

Shimada, Y.; Vagn, C.; Johansen, F.; MacGregor, M.; Thomas, O. (2005) Chemical path of ettringite formation in heat-cured mortar and its relationship to expansion: A literature review. PCA Res. Dev. Bul. RD136.

Kawabata, Y. (2018) Diagnosis on expansion of heat-cured precast concrete blocks due to delayed ettringite formation in Japan. 6th ICDCS. 516-524.

Fujikane, M.; Nakahara, K.; Nakamura, T. (2009) A report about the deterioration of the concrete product by delayed ettringite formation (DEF). Civil Eng. J. 51 [11], 38-41. (in Japanese)

Poole, A.B.; Ian, S. (2016) Concrete Petrography. CRC Press. 420. https://doi.org/10.1201/b18688

Thomas, M.D.A.; Folliard, K.; Drimalas, T.; Ramlochan, T. (2008) Diagnosing delayed ettringite formation in concrete structures. Cem. Conc. Res. 38 [6], 841-847. https://doi.org/10.1016/j.cemconres.2008.01.003

Shayan, A.; Quick, G.W. (1992) Microscopic features of cracked and uncracked concrete railways sleepers. ACI Mater. J. 89, 348-364. https://doi.org/10.14359/2560

Larive, C.; Louarn, N. (1992) Diagnosis of alkali-aggregate reaction and sulphate reaction in French structures. Proce. 9th ICAAR. 587-598.

Shayan, A.; Quick, G.W. (1992) Relative importance of deleterious reactions in concrete: formation of AAR products and secondary ettringite. Adv. Cem. Res. 4 [16], 149-157. https://doi.org/10.1680/adcr.1992.4.16.149

Hime, W.G.; Marusin, S.; Jugovic, Z.; Martinek, R.; Cechner, R.; Backus, L. (2000) Chemical and petrographic analyses and ASTM test procedures for the study of delayed ettringite formation. Cem. Conc. Agg. 22 [2], 160-168. https://doi.org/10.1520/CCA10476J

Skalny, J.; Johansen, V.; Thoulow, N.; Palomo, A. (1996) DEF: As a form of sulfate attack. Mater. Construcc. 46 [244], 5-29. https://doi.org/10.3989/mc.1996.v46.i244.519

Marusin, S.L. (1993) SEM studies of DEF in hardened concrete. Proc. 15th ICCM, Dallas. 289-299.

Marusin, S.L. (1994) A Simple treatment to distinguish alkali-silica gel from delayed ettringite formations in concrete. Mag. Conc. Res. 46 [168], 163-166. https://doi.org/10.1680/macr.1994.46.168.163

João, C.; António, B.R. (2019) Evaluation of damage in concrete from structures affected by internal swelling reactions - A case study. Procedia Stru. Integ. 17, 80-89. https://doi.org/10.1016/j.prostr.2019.08.012

Owsiak, Z. (2010) The effect of delayed ettringite formation and alkali-silica reaction on concrete microstructure. Ceramics Silikaty. 54 [3], 277-283. Retrieved from https://www.irsm.cas.cz/materialy/cs_content/2010/Owsiak_CS_2010_0000.pdf.

Tepponen, P.; Eriksson, B.E. (1987) Damage in concrete railway sleepers in Finland. Nordic Conc. Res. 6, 199-209.

Shayan, A.; Quick, G.W. (1994) Alkali-aggregate reaction in concrete railway sleepers from Finland. Proc. 16th International Conference on cement microscopy. 69-79. https://doi.org/10.1016/0958-9465(94)90012-4

Jensen, V.; Sujjavanich, S. (2016) ASR and DEF in concrete foundations in Thailand. Proc. 15th ICAAR, Sao Paulo, Brazil.

Jensen, V.; Sujjavanich, S. (2016) Alkali silica reaction in concrete foundation in Thailand. Proc. 15th ICAAR, Sao Paulo, Brazil.

Hirono, S.; Yamada, K.; Ando, Y.; Sato, T.; Yamada; K.; Kagimoto, H.; Torii, K. (2016) ASR found in Thailand and tropical regions of southeast asia. Proc. 15th ICAAR, Sao Paulo, Brazil.

Awasthi, A.; Matsumoto, K.; Nagai, K.; Asamoto, S.; Goto, S. (2017) Investigation on possible causes of expansion damages in concrete - a case study of sleepers in Indian Railways. J. Asian Conc. Fed. 3 [1], 49-66. https://doi.org/10.18702/acf.2017.06.3.1.49

Ando, Y.; Katayama, T.; Asamoto, S.; Nagai, K. (2018) Investigation to determine the causes of the cracks occurred in the PC sleepers of Indian railways and interaction of ASR and DEF. Proc. JCI Annual Convention. 40 [2], 909-914. (in Japanese). Retrieved from http://data.jci-net.or.jp/data_html/40/040-01-1146.html.

Ando, Y.; Hirono, S.; Katayama, Y.; Torii, K. (2018) Microscopic observation of sites and forms of ettringite in the microstructure of deteriorated concrete. Cem. Sci. Conc. Tec. 72 [1], 2-9. (in Japanese). https://doi.org/10.14250/cement.72.255

Nomura, M.; Ura, S.; Ishii, K.; Torii, K. (2017) Influence of hot asphalt paving on steel bridge reinforced concrete slabs and detailed analysis on cores from real structures. Proc. JCI Annual Convention. 39 [1], 931-936. (in Japanese).

Hashimoto, T.; Kanai, S.; Hirono, S.; Torii, K. (2015) A consideration on improvement in durability aspects of concrete poles. Cem. Sci. Conc. Tec. 69 [1], 550-557. (in Japanese) https://doi.org/10.14250/cement.69.550

Mori, H.; Yamada, K.; Iwaki, I.; Nagataki, S. (2018) Demonstration experiment on durability of concrete containers storing incineration fly ash contaminated with radionuclides and technical requirements of such containers. Conc. J. 56 [4], 296-303. (in Japanese). Retrieved from https://www.jstage.jst.go.jp/article/coj/56/4/56_296/_article/-char/ja/. https://doi.org/10.3151/coj.56.4_296

Durand, B.; Marchand, B.; Larivere, R.; Bergeron, J.M.; Pelletier, G.; Ouimet, M.; Berard, J.; Katayama, T. (2004) A special history case about severe damages due to freezing and thawing combined with sulfate migration and ASR at Rapides-Des-Quinze hydraulic structures. Proc. 12th ICAAR.

Jones, T.N.; Poole, A.B. (1986) Alkali-silica reaction in several U.K. concretes: The effect of temperature and humidity on expansion, and the significance of ettringite development. Proc. 7th ICAAR. 446-451.

Shayan, A.; Ivanusec, I. (1996) An experimental clarification of the association of delayed ettringite formation with alkali aggregate reaction. Cem. Conc. Comp. 18 [3], 161-170. https://doi.org/10.1016/0958-9465(96)00012-1

Chatterji, S. (1978) Mechanism of the CaCl2 attack on Portland cement concrete. Cem. Concr. Res. 8 [4], 461-467. https://doi.org/10.1016/0008-8846(78)90026-1

Michaud, V.; Sorrentino, D. (2003) Influence of temperature and alkali concentration on thermodynamical stability of sulphoaluminate phases. Proc. 11th ICCC. 2033-2043.