Commenced in January 2007
Paper Count: 32601
Flow Performance of Hybrid Cement Based Mortars
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.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132108Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 803
 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.
 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.
 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.
 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.
 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.
 P. Chindaprasirt, T. Chareerat, V. Sirivivatnon, “Workability of coarse high calcium fly ash geopolymer,” Cem Concr Compos vol. 29, pp.224–9, 2007.
 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.
 A. Sathonsaowaphak, P. Chindaprasirt, K. Pimraksa, “Workability and strength of lignite bottom ash geopolymer mortar,” J Hazard Mater vol.168, pp.44–50, 2009.
 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.
 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.
 BS EN 1015-3, Methods of test for mortar for masonry. Determination of consistence of fresh mortar (by flow table), UK, 1999.
 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.
 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.
 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.
 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.
 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.