Evaluación de los factores que influyen en el desarrollo de la retracción por secado en los hormigones producidos en Cuba
DOI:
https://doi.org/10.4067/S0718-28132019000200100%20Palabras clave:
Retracción por secado, Deformaciones, Microestructura, Hormigón, Estrategias de mitigaciónResumen
El agrietamiento de elementos de hormigón debido a retracción por secado afecta a un gran número de estructuras en todo el mundo. Como consecuencia, los edificios no solo se afectan estéticamente, sino también estructuralmente, ya que los patrones de fisuración, además de afectar la rigidez inicial, actúan como un camino a los agentes atmosféricos, contribuyendo a la corrosión del acero de refuerzo y, consecuentemente afectan la durabilidad. Se presenta una caracterización de la retracción para un conjunto de muestras de hormigones producidos en Cuba. Se evalúan factores que influyen en el desarrollo de los procesos de retracción, así como la efectividad de las diferentes estrategias de mitigación. Los resultados demuestran la relevancia de la formación y composición de la microestructura y la influencia de los áridos gruesos en el desarrollo de la retracción. La eficacia de los aditivos reductores de la retracción también se devela como la estrategia de mitigación más efectiva.
Referencias
ACI-209R (1998). Prediction of creep, shrinkage, and temperature effects in concrete structures. American Concrete Institute ACI, Detroit, USA.
ACI-231 (2008). Control of shrinkage, early age cracking, causes, measurement and mitigation. American Concrete Institute ACI, Detroit, USA.
ASTM C157 (2006). Length change of hardened hydrauliccement mortar and concrete. American Society of Testing and Materials ASTM, USA.
Bentz, D.P. and Jensen, O.M. (2004). Mitigation strategies for autogenous shrinkage cracking. Cement and Concrete Composites 26(6), 677-685.
Bissonnette, B., Pierre, P. and Pigeon, M. (1999). Influence of key parameters on drying shrinkage of cementitious materials. Cement and Concrete Research 29(10), 1655-1662.
Bouhamou, N.E., Belas, N., Bendani, K. and Mebrouki, A. (2013). Shrinkage behavior of a self-compacting concrete. Materiali in tehnologije 47(6), 763-769.
Brouwers, H.J.H. (2004). The work of Powers and Brownyard revisited: Part 1. Cement and Concrete Research 34(9), 1697-1716.
Brouwers, H.J.H. (2005). The work of Powers and Brownyard revisited: Part 2. Cement and Concrete Research 35(10), 1922-1936.
Chen, H., Wyrzykowski, M., Scrivener, K. and Lura, P. (2013). Prediction of self-desiccation in low water-to-cement ratio pastes based on pore structure evolution. Cement and Concrete Research 49, 38-47.
Eguchi, K. and Teranishi, K. (2005). Prediction equation of drying shrinkage of concrete. Cement and Concrete Research 35(3), 483-493.
Fernandez, R. (2008). Calcined clayey soils as a potential replacement for cement in developing countries. PhD thesis, EPFL, Lausanne, Switzerland.
Fujiwara, T. (2008). Effect of aggregate on drying shrinkage of concrete. Journal of Advanced Concrete Technology 6(1), 31-44.
Gribniak, V., Kaklauskas, G. and Bacinskas, D. (2008). Shrinkage in reinforced concrete structures: a computational aspect. Journal of Civil Engineering and Management 14(1), 49-60.
Güneyisi, E., Gesoĝlu, M. and Mermerdaş, K. (2008). Improving strength, drying shrinkage, and pore structure of concrete using metakaolin. Materials and Structures 41(5), 937-949.
Helmuth, R.A. and Turk, D.H. (1967). The reversible and irreversible drying shrinkage of hardened Portland cement and tricalcium silicate pastes. Journal of the Portland Cement Association Research and Development Laboratories 9(2), 8–21.
Herrera, L.L. and Ramírez, R. (2014). Evaluation of cracking of concrete in bungalow-like structures caused by retraction induced by relative humidity gradients. Degree project, Universidad Central “Marta Abreu” de Las Villas, Cuba.
Howland, J.J. (2012). Performance by durability of reinforced concrete structures. Politechnic Institute of La Havana.
Jafarifar, N., Pilakoutas, K. and Bennett, T. (2014). Moisture transport and drying shrinkage properties of steel–fibrereinforced-concrete. Construction and Building Materials 73, 41-50.
Juenger, M.C.G. and Jennings, H.M. (2002). Examining the relationship between the microstructure of calcium silicate hydrate and drying shrinkage of cement pastes. Cement and Concrete Research 32(2), 289-296.
Li, J. and Yao, Y. (2001). A study on creep and drying shrinkage of high performance concrete. Cement and Concrete Research 31(8), 1203-1206.
Liu, L., Wang, X., Chen, H. and Wan, C. (2016). Microstructurebased modelling of drying shrinkage and microcracking of cement paste at high relative humidity. Construction and Building Materials 126, 410-425.
Martirena, J.F. (2004). A compatible environment alternative to reduce the consumption of Portland cement clinker binder. Doctoral thesis, Universidad Central Marta Abreu de Las Villas, Cuba (in Spanish).
Pan, H., Yang, Z. and Xu, F. (2016). Study on concrete structure’s durability considering the interaction of multifactors. Construction and Building Materials 118, 256-261.
Rao, A. (2000). Long-term drying shrinkage of mortar-influence of silica fume and size of fine aggregate. Cement and Concrete Research 31(2), 171-175.
Sant, G.N. (2009). Fundamental investigations related to the mitigation of volume changes in cement-based materials at early ages. PhD thesis, Purdue University, USA.
Segura, I., Moragues, A. y Anaya, J.J. (2008). Microstructural characterization of cement base materials by destructive tests: part II. Cemento y Hormigón 921, 4-28 (in Spanish).
Sun, W., Chen, H., Luo, X. and Qian, H. (2001). The effect of hybrid fibers and expansive agent on the shrinkage and permeability of high-performance concrete. Cement and Concrete Research 31(4), 595-601.
Verbeck, G.J. and Helmuth, R.A. (1969). Structures and physical properties of cement paste. 5th International Congress on the Chemistry of Cement, Tokyo, 1-32.
Zhang, J., Hou, D. and Han, Y. (2012). Micromechanical modeling on autogenous and drying shrinkages of concrete. Construction and Building Materials 29, 230-240.
Descargas
Publicado
Versiones
- 2019-12-01 (2)
- 2019-12-01 (1)
Número
Sección
Licencia
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial 4.0.
