Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30075
High Performance Fibre Reinforced Alkali Activated Slag Concrete

Authors: A. Sivakumar, K. Srinivasan

Abstract:

The main objective of the study is focused in producing slag based geopolymer concrete obtained with the addition of alkali activator. Test results indicated that the reaction of silicates in slag is based on the reaction potential of sodium hydroxide and the formation of alumino-silicates. The study also comprises on the evaluation of the efficiency of polymer reaction in terms of the strength gain properties for different geopolymer mixtures. Geopolymer mixture proportions were designed for different binder to total aggregate ratio (0.3 & 0.45) and fine to coarse aggregate ratio (0.4 & 0.8). Geopolymer concrete specimens casted with normal curing conditions reported a maximum 28 days compressive strength of 54.75 MPa. The addition of glued steel fibres at 1.0% Vf in geopolymer concrete showed reasonable improvements on the compressive strength, split tensile strength and flexural properties of different geopolymer mixtures. Further, comparative assessment was made for different geopolymer mixtures and the reinforcing effects of steel fibres were investigated in different concrete matrix.

Keywords: Accelerators, Alkali activators, Geopolymer, Hot air oven curing, Polypropylene fibres, Slag, Steam curing, Steel fibres.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1097305

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References:


[1] J. Davidovits, “Geopolymers and geopolymeric materials,” Journal of Thermal Analysis, vol. 35, pp. 429–441, 1989.
[2] T. Alomayri, F.U.A. Shaikh, and I.M. Low, “Characterisation of cotton fibre-reinforced geopolymer composites,” Composites: Part B, vol. 50, pp. 1–6, Feb. 2013.
[3] F. Puertas, S. MartõÂnez-RamõÂrez, S. Alonso, and T. VaÂzquez, “Alkali-activated fly ash/slag cement Strength behaviour and hydration products,” Cement and Concrete Research, vol. 30, pp. 1625-1632, Apr. 2000.
[4] F. Puertas, T. Amat, A. Ferna´ndez-Jime´nez, and T. Va´zquez, “Mechanical and durable behaviour of alkaline cement mortars reinforced with polypropylene fibres,” Cement and Concrete Research, vol. 33, pp. 2031–2036, June 2003.
[5] Valeria F.F. Barbosa, Kenneth J.D. MacKenzie, and Clelio Thaumaturgo, “Synthesis and characterisation of materials based on inorganic polymers of alumina and silica: sodium polysialate polymers,” International Journal of Inorganic Materials, vol. 2, pp. 309–317, May 2000.
[6] D. Hardjito, and B. V. Rangan, “Fly Ash-Based Geopolymer Concrete Develoment and properties of low-calcium fly ash- based geopolymer concret,” Research Report GC 1, 2005.
[7] Anuj Kumar, and Sanjay Kumar, “Development of paving blocks from synergistic use of red mud and fly ash using geopolymerization,” Construction and Building Materials, vol.38, pp. 865–871, Oct. 2012.
[8] Hua Xu, and J.S.J. Van Deventer, “The geopolymerisation of aluminosilicate minerals,” International Journal Mineral Process, vol. 59, pp 247–266, Nov. 1999.
[9] Peter Duxson, John L. Provis, Grant C. Lukey and Jannie S.J. van Deventer, “The role of inorganic polymer technology in the development of ‘green concrete’,” Cement and Concrete Research, vol. 37, pp. 1590– 1597, Aug. 2007.
[10] S. Oniseia, Y. Pontikesb, T. Van Gervenc, G.N. Angelopoulosd, T. Veleae, V. Predicae, and P. Moldovana, “Synthesis of inorganic polymers using fly ash and primary lead slag,” Journal of Hazardous Materials, vol. 205– 206, pp. 101– 110, Dec. 2011.
[11] A. Autef, E. Joussein, G. Gasgnier, and S. Rossignol, “Role of the silica source on the geopolymerization rate,” Journal of Non-Crystalline Solids, vol. 358, pp. 2886–2893, Aug. 2012.
[12] Isabella Lancellotti, MichelinaCatauro, ChiaraPonzoni, FlaviaBollino, and CristinaLeonelli, “Inorganic polymers from alkali activation of metakaolin: Effect of setting and curing on structure,” Journal of Solid State Chemistry, vol. 200, pp. 341–348, Feb. 2013.