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Flow Performance of Hybrid Cement Based Mortars

Authors: Z. Abdollahnejad, M. Kheradmand, F. Pacheco Torgal

Abstract:

The workability of hybrid alkaline cements is a field of knowledge that still needs further research efforts. This paper reports experimental results of 32 hybrid cement mixes regarding the joint effect of sodium hydroxide concentration, the use of a commercial superplasticizer and a biopolymer on the flow and compressive strength performance. The results show that the use of commercial admixtures led to a slightly increase in the flow of mortars with lower sodium hydroxide concentration.

Keywords: Waste reuse, fly ash, waste glass, hybrid cement, biopolymer, polycarboxylate, flow.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132108

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References:


[1] C. Shi, A. Fernandez-Jimenez, A. Palomo, “New cements for the 21st century: The pursuit of an alternative for Portland cement,” Cement and Concrete Research vol.41, pp.750-763, 2011.
[2] I. Garcia-Lodeiro, A. Fernandez-Jimenez, A. Palomo, “Variation in hybrid cements over time. Alkaline activation of fly ash-portland cement blends,” Concrete Research 52, 112-122, 2013.
[3] J. Payá, J. Monzó, M. Borrachero, M. Tashima, “Reuse of aluminosilicate industrial waste materials in the production of alkali-activated concrete binders,” in Handbook of Alkali-Activated Cements, Mortars and Concretes, F. Pacheco-Torgal, J. Labrincha, A. Palomo, C. Leonelli, P. Chindaprasirt, Eds, WoodHead Publishing, Cambridge, 2014, pp. 487-518.
[4] P. Chindaprasirt, T. Cao, “Reuse of recycled aggregate in the production of alkali-activated concrete. In Handbook of Alkali-Activated Cements, Mortars and Concretes, 519-538, F. Pacheco-Torgal, J. Labrincha, A. Palomo, C. Leonelli, P. Chindaprasirt, Eds, WoodHead Publishing, Cambridge, 2014, pp. 519-538.
[5] M. Palácios, F. Puertas, “Effect of superplasticizer and shrinkage-reducing admixtures on alkali-activated slag pastes and mortars. Cem Concr Res vol. 35, pp.1358–67, 2005.
[6] P. Chindaprasirt, T. Chareerat, V. Sirivivatnon, “Workability of coarse high calcium fly ash geopolymer,” Cem Concr Compos vol. 29, pp.224–9, 2007.
[7] B. Rangan, “Engineering properties of geopolymer concrete”, in Geopolymers, structure, processing, properties and applications, J. Provis, J. Van Deventer Eds, Woodhead Publishing Limited, Abington Hall, Cambridge, 2009. p. 211–226.
[8] A. Sathonsaowaphak, P. Chindaprasirt, K. Pimraksa, “Workability and strength of lignite bottom ash geopolymer mortar,” J Hazard Mater vol.168, pp.44–50, 2009.
[9] F.Pacheco-Torgal, D.Moura, Y.Ding, S. Jalali, "Composition, strength and workability of alkali-activated metakaolin based mortars", Construction and Building Materials vol. 25, 9: pp.3732 – 3745, 2011.
[10] J. Jang, N. Lee, H. Lee, “Fresh and hardened properties of alkali-activated fly ash/slag pastes with superplasticizers,” Construction and Building Materials vol. 50, pp.169–176, 2014.
[11] BS EN 1015-3, Methods of test for mortar for masonry. Determination of consistence of fresh mortar (by flow table), UK, 1999.
[12] ASTM C109 / C109M-16a, Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or (50-mm) Cube Specimens), ASTM International, West Conshohocken, 2016.
[13] I. Garcia-Lodeiro, S. Donatello, a. Fernandez-Jimenez, A Palomo, “Hydration of hybrid alkaline cement containing a very large proportion of fly ash:A Descriptive Model”, Materials vol. 9, 605;2016.
[14] A. Rashad, “A comprehensive overview about the influence of different admixtures and additives on the properties of alkali-activated fly ash,” Materials and Design 53, pp.1005–102, 2014.
[15] B. Nematollahi, J. Sanjayan, “Effect of different superplasticizers and activator combinations on workability and strength of fly ash based geopolymer,” Materials and Design vol. 57, pp.667-672, 2014.
[16] M. Palacios, F. Puertas, “Stability of superplasticizers and shrinkage reducing admixtures in highly basic media,” Mater de Constr vol. 54(276):pp.65–86, 2004.