Publicado

2018-01-01

Efficiency of cement-admixture systems in mortars with binary and ternary Portland cements

Eficiencia de sistemas cemento-aditivo en morteros con cementos Portland binarios y ternarios

DOI:

https://doi.org/10.15446/dyna.v85n204.66468

Palabras clave:

cement, binary, ternary, superplasticizer, mortar, fluidity, compressive strength (en)
cemento, binario, ternario, superplastificante, mortero, fluidez, resistencia a compresión (es)

Autores/as

Compared to conventional concrete, high-performance concrete production offers such benefits as greater ease of placement, smaller sections, improved finishing and higher strength and durability. For the design of these types of concretes, it is advisable to carry out studies on pastes or mortars in order to evaluate admixture - cementitious material compatibility. This evaluation entails verifying fresh state properties and evolution over time. The aim of this work is to evaluate the behavior of mortars made with different water reducers as well as binary and ternary cements, and their connection to the properties they acquire in hardened state. Fluidity in the fresh state and absorption, density and compressive strength in the hardened state were evaluated. The results show that the impact of superplasticizers is not restricted to the fresh state, as influence on the development of the degree of hydration and compacity can also be noticed.
La elaboración de hormigones de alta performance ofrece beneficios tales como mayor facilidad de colocación, secciones reducidas, mejoras en la terminación, mayor durabilidad y resistencia comparativamente con hormigones convencionales. Para el diseño de dichos hormigones, es aconsejable realizar estudios en pastas o morteros para evaluar la compatibilidad aditivo reductor de agua-material cementiceo. Dicha evaluación implica la verificación de propiedades del estado fresco y su evolución en el tiempo. El objetivo de este estudio consiste en evaluar el comportamiento de diferentes sistemas aditivo reductor de agua-cemento en morteros elaborados con diferentes cementos binarios y ternarios y su conexión con las propiedades del estado endurecido. La fluidez en estado fresco, densidad, absorción y resistencia a compresión en estado endurecido fueron evaluadas. De los resultados obtenidos surge que la influencia de los superplastificantes no es restringida al estado fresco, observándose también influencia en el desarrollo del grado de hidratación y en la compacidad.

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Donza, H. y Trezza, M., Estudio comparativo del comportamiento de aditivos superfluidificantes. Proceedings of Congreso de Ingeniería, Estructuras, Materiales y Técnicas Constructivas hacia el Siglo XXI. Argentina [en línea]. 2000. Disponible en: http://www.efn.uncor.edu/departamentos/estruct/ciath/superflu.pdf

Alonso, M.M., Palacios, M., Puertas, F., De la Torre, A.G. and Aranda, M.A.G. Effect of polycarboxylate admixture structure on cement paste rheology. Materiales de Construcción, 57(286), pp.65- 81, 2007. DOI: 10.3989/mc.2007.v57.i286.48

Huang, H., Qian, C., Zhao, F., Qub, J., Guo, J. and Danzinger, M., Improvement on microstructure of concrete by polycarboxylate superplasticizer (PCE) and its influence on durability of concrete. Construction and Building Materials, 110(1), pp. 293-299, 2016.

Aïtcin, P.C., Jolicoeur, C. and MacGregor, G.J., Superplasticizers; How they work and why they occasionally don´t. International Concrete Research, 16(5), pp. 45-52, 1994.

Rixom, R. and Mailvaganam, N., Chemical admixtures for concrete. (Third edition). London, England: E&FN Spon. 1999.

Nkinamubanzi, P.C., Mantellato, S. and Flatt, R.J., Superplasticizers in practice. Science and Technology of Concrete Admixtures, 2016, pp. 353-377.

Griesser, A., Cement-Superplasticizer interactions at ambient temperatures. Rheology, phase composition, pore water, and heat of hydration of cementitious systems. PhD. Thesis, Swiss Federal Institute of Technology, Zurich, Switzerland. [online]. 2002. Available at: http://biblioteca.universia.net.

Menéndez, G., Bonavetti, V.L., Donza, H., Rahhal, V. y Irassar, E.F., Cementos a medida con filler calcáreo y puzolana. Proceedings of 15ª Reunión Técnica de la Asociación Argentina de Tecnología del Hormigón, Argentina, 2003.

Sosa, M.E., Villagrán-Zaccardi, Y.A., Zega, C.J. and Peralta, J.P., Fresh properties of mortar made whit pozzolanic cement and water reducer. MRS Proceedings. [online].1488. 2012. Available at: http: www. http://journals.cambridge.org

Adjoudj, M., Ezziane, K., Kadri, E.H., Ngo, T.T. and Kaci, A., Evaluation of rheological parameters of mortar containing various amounts of mineral addition with polycarboxylate superplasticizer. Construction and Building Materials, 70(15), pp. 549-559, 2014. DOI: 10.1016/j.conbuildmat.2014.07.111

Erdogdu, S., Compatibility of superplasticizers with cements different in composition. Cement and Concrete Research, 30(5), pp. 767-773, 2000. DOI: 10.1016/S0008-8846(00)00229-5.

Palacios, M., Puertas, F., Bowen, P. and Houst, F., Effect of PCs superplasticizers on the rheological properties and hydration process of slag-blended cement pastes. Journal of Materials Science, 44, pp. 2714-2723, 2009. DOI: 10.1007/s10853-009-3356-4.

Puertas, F., Alonso, M.M. y Vázquez, T., Influencia de aditivos basados en policarboxilatos sobre el fraguado y el comportamiento reológico de pastas de cemento portland. Materiales de Construcción, 55(277), pp. 61-73, 2005.

Boukendakdji, O., Kadri, El-H. and Kenai, S., Effects of granulated blast furnace slag and superplasticizer type on the fresh properties and compressive strength of self-compacting concrete. Cement & Concrete Composites, 34, pp. 583-590, 2012. DOI: 10.1016/j.cemconcomp.2011.08.013

Palacios, M., Houst, Y.F., Bowen, P. and Puertas, F., Adsorption of superplasticizer admixtures on alkali-activated slag pastes. Cement and Concrete Research, 39, pp. 670-677, 2009b. DOI: 10.1016/j.cemconres.2009.05.005

Shi, C., Zhang, G., He, T. and Li, Y., Effects of superplasticizers on the stability and morphology of ettringite. Construction and Building Materials, 112(1), pp. 261-266, 2016. DOI: 10.1016/j.conbuildmat.2016.02.198

Meier, M.R., Napharatsamee, T. and Plank, J., Dispersing performance of superplasticizers admixed to aged cement. Construction and Building Materials, 139(15), pp. 232-240, 2017. DOI: 10.1016/j.conbuildmat.2016.12.126

Yazan, K., Effects of retempering with superplasticizer on properties of prolonged mixed mineral admixture containing concrete at hot weather conditions. MSc, Thesis, Middle East Technical University, Ankara, Turkey, [online]. 2005. Available at: https://etd.lib.metu.edu.tr

Aïtcin, P.C., Binders for durable and sustainable concrete. Taylor & Francis, New York, 2008.

Lothenbach, B., Le Saout, G., Gallucci, E. and Scrivener, K., Influence of limestone on the hydration of portland cements. Cement and Concrete Research 38(6), pp. 848-860, 2008. DOI: 10.1016/j.cemconres.2008.01.002

EFNARC. Especificaciones y directrices para el hormigón autocompactable. [en línea]. 2002. Disponible en: http:// www.efnarc.org.

Okamura, H. and Ouchi, M., Self-compacting concrete. Journal of Advanced concrete Technology, 1(1), pp. 5-15, 2003.

Felekoglu, B., Tosun, K., Baradan, B., Altun, A. and Uyulgan, B., The effect of fly ash and limestone filler on the viscosity and compressive strength of self-compacting repair mortars. Cement and Concrete Research. 36(9), pp. 1719-1726, 2006. DOI: 10.1016/j.cemconres.2006.04.002

Liu, M., Wider application of additions in self-compacting concrete. PhD. Thesis University College London, [online]. 2009. Available at: http:// discovery.ucl.ac.uk

NCh 2257/3. Morteros. Determinación de la consistencia- Parte 3: Método del asentamiento del cono. Instituto Nacional de Normalización. Chile, 1996.