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http://dx.doi.org/10.5345/JKIBC.2017.17.3.261

Pore and Efflorescence Characteristics of Alkali Activated Slag-Red Mud Cement Mortar depending on Red Mud Content  

Kang, Suk-Pyo (Department of Architecture, Woosuk University)
Kang, Hye-Ju (Department of Construction Engineering, Woosuk University)
Publication Information
Journal of the Korea Institute of Building Construction / v.17, no.3, 2017 , pp. 261-268 More about this Journal
Abstract
Red mud is an inorganic by-product obtained from the mineral processing of alumina from Bauxite ores. A highly alkali inorganic waste product with a pH level over 11, red mud in its original state negatively impacts the ecosystem, so appropriate treatment is necessary. The development of alkali activated slag-red mud cement can be a representative study aimed at recycling the strong alkali of the red mud as a construction material. However, Alkali-activated binders that use sodium activators have been reported to be more vulnerable to efflorescence. Therefore, in this study, the compressive strength, pore characteristics, water absorption, elution characteristics, and efflorescence properties of alkali-activated slag cement mortar were assessed according to their red mud substitution ratio.
Keywords
alkali-activated; red-mud; efflorescence; porosity;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Pacheco-torcal, Fernando, Labrincha, Joao, Leonelli, C. Handbook of Alkali-activated cements, Mortars and Concretes. USA: Elsevier Science Ltd; 2014. Chapter 9, Analysing the relation between pore structure and permeability of alkali-activated concrete binders; p.243-57.
2 Moon KJ. Properties of non-sintered cement and concrete recycled with industrial waste. Ph.D thesis. Korea: Chonbuk National University; 2004. 319 p.
3 Kim TW, Hahm HG. The strength properties activated granulated ground blast furnace slag with aluminum potassium sulfate and sodium hydroxide. Journal of the Korea Concrete Institute. 2015 12;27(2):95-102.   DOI
4 Pontikes Y, Angelopoulos GN. Bauxite residue in cement and cementitious applications : Current status and a possible way forward, Resources. Conservation and Recycling. 2013 1;73:53-63.   DOI
5 Daniel VR, Joao AL, Marcio RM. Potential use of natural red mud as pozzolan for portland cement. Materials Research. 2011 11;14(1):60-6.   DOI
6 Pan Z, Cheng L, Lu Y, Yang N. Hydration products of alkali-activated slag-red mud cementitious material. Cement and Concrete Research. 2002;32(3):357-62.   DOI
7 Pan Z, Li D, Yu J, Yang N. Properties and microstructure of the hardened alkali-activated red mud-slag cementitious material. Cement and Concrete Research. 2003 2;33(9):1437-41.   DOI
8 Kang SP, Kwon SJ. Effects of red mud and alkali-activated slag cement on efflorescence in cement mortar. Construction and Building Materials. 2017 12;133:459–67.   DOI
9 Kang SP, Kang HJ. Durability of alkali-activated slag-red mud cement mortar using polymer. Journal of the Architectural Institute of Korea Structure & Construction. 2017 1;33(1):81-8.   DOI