Effect of GGBFS on Workability and Strength of Alkali-activated Geopolymer Concrete

Gautam Kumar, S. S. Mishra


This paper focuses on the development of a concrete material by utilizing fly ash and blast furnace slag in conjunction with coarse and fine aggregates with an aim to reduce pollution and eliminate the use of energy extensive binding material like cement. Alternative binding materials have been tried with an aim to get rather an improved concrete material. Alkali-Activated Solution (AAS) made of the hydroxide and silicate solutions of sodium was adopted as the liquid binder whereas, Class F” fly ash and Ground Granulated Blast Furnace Slag (GGBFS) mixed in dry state were used as the Geopolymer Solid Binder (GSB). The liquid binder was used to synthesize the solid binder by thermal curing. The paper investigates the use, influence and relative quantities of the liquid and solid binders in the development of the alkali-activated GGBFS based Geopolymer Concrete (GPC). Varying ratios of AAS to GSB were taken to assess their optimum content. Further, different percentages of GGBFS were used as a partial replacement of Class F fly ash to determine the optimum replacement of GGBFS in the GPC. In order to assess their effects on various properties test samples of cubes, cylinders and beams were cast and tested at 3, 7, and 28 days. Thermal curing of GPC has also resorted for favorable results. It was found that AAS to GSB ratio of 0.5 and GGBFS content of 80% yielded the maximum strength with a little unfavorable effect on workability. The overall results indicated that AAS and GGBFS offer good geopolymer concrete which will find its applicability in water scarce areas.


Doi: 10.28991/cej-2021-03091708

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Fly Ash; GGBFS; Geopolymer Solid Binder; Alkali-Activated Solution; Geopolymer Concrete; Workability; Mechanical Properties.


Zhang, Peng, Zhen Gao, Juan Wang, Jinjun Guo, Shaowei Hu, and Yifeng Ling. “Properties of Fresh and Hardened Fly Ash/slag Based Geopolymer Concrete: A Review.” Journal of Cleaner Production 270 (October 2020): 122389. doi:10.1016/j.jclepro.2020.122389.

Benhelal, Emad, Gholamreza Zahedi, Ezzatollah Shamsaei, and Alireza Bahadori. “Global Strategies and Potentials to Curb CO2 Emissions in Cement Industry.” Journal of Cleaner Production 51 (July 2013): 142–161. doi:10.1016/j.jclepro.2012.10.049.

Sabbagh Moghadam, Ali, and Navid Hadiani. “Stabilizing the Excavation Materials to Be Used in Fill Layers.” Civil Engineering Journal 4, no. 5 (June 3, 2018): 1165. doi:10.28991/cej-0309165.

Davidovits, Joseph. "Geopolymers: man-made rock geosynthesis and the resulting development of very early high strength cement." Journal of Materials education 16 (1994): 91-91.

Pacheco-Torgal, Fernando, João Castro-Gomes, and Said Jalali. “Alkali-Activated Binders: A Review.” Construction and Building Materials 22, no. 7 (July 2008): 1305–1314. doi:10.1016/j.conbuildmat.2007.10.015.

Ma, Chau-Khun, Abdullah Zawawi Awang, and Wahid Omar. “Structural and Material Performance of Geopolymer Concrete: A Review.” Construction and Building Materials 186 (October 2018): 90–102. doi:10.1016/j.conbuildmat.2018.07.111.

Singh, B., M.R. Rahman, R. Paswan, and S.K. Bhattacharyya. “Effect of Activator Concentration on the Strength, ITZ and Drying Shrinkage of Fly Ash/slag Geopolymer Concrete.” Construction and Building Materials 118 (August 2016): 171–179. doi:10.1016/j.conbuildmat.2016.05.008.

Bernal, Susan A., John L. Provis, Brant Walkley, Rackel San Nicolas, John D. Gehman, David G. Brice, Adam R. Kilcullen, Peter Duxson, and Jannie S.J. van Deventer. “Gel Nanostructure in Alkali-Activated Binders Based on Slag and Fly Ash, and Effects of Accelerated Carbonation.” Cement and Concrete Research 53 (November 2013): 127–144. doi:10.1016/j.cemconres.2013.06.007.

Mastali, M., P. Kinnunen, A. Dalvand, R. Mohammadi Firouz, and M. Illikainen. “Drying Shrinkage in Alkali-Activated Binders – A Critical Review.” Construction and Building Materials 190 (November 2018): 533–550. doi:10.1016/j.conbuildmat.2018.09.125.

Lee, N.K., and H.K. Lee. “Setting and Mechanical Properties of Alkali-Activated Fly Ash/slag Concrete Manufactured at Room Temperature.” Construction and Building Materials 47 (October 2013): 1201–1209. doi:10.1016/j.conbuildmat.2013.05.107.

Ekaputri, Januarti Jaya, Muhammad Bahrul Ulum, Triwulan, Ridho Bayuaji, Tri Eddy Susanto, and Mohd Mustafa Al Bakri Abdullah. “A Comprehensive Characterization and Determination of Fly Ashes in Indonesia Using Different Methods.” Applied Mechanics and Materials 754–755 (April 2015): 320–325. doi:10.4028/www.scientific.net/amm.754-755.320.

Ryu, Gum Sung, Young Bok Lee, Kyung Taek Koh, and Young Soo Chung. “The Mechanical Properties of Fly Ash-Based Geopolymer Concrete with Alkaline Activators.” Construction and Building Materials 47 (October 2013): 409–418. doi:10.1016/j.conbuildmat.2013.05.069.

Ojha, Avinash, and Praveen Aggarwal. “Fly Ash Based Geopolymer Concrete: a Comprehensive Review.” Silicon (March 19, 2021). doi:10.1007/s12633-021-01044-0.

Yost, Joseph Robert, Aleksandra Radlińska, Stephen Ernst, and Michael Salera. “Structural Behavior of Alkali Activated Fly Ash Concrete. Part 1: Mixture Design, Material Properties and Sample Fabrication.” Materials and Structures 46, no. 3 (August 9, 2012): 435–447. doi:10.1617/s11527-012-9919-x.

Saini, Guneet, and Uthej Vattipalli. “Assessing Properties of Alkali Activated GGBS Based Self-Compacting Geopolymer Concrete Using Nano-Silica.” Case Studies in Construction Materials 12 (June 2020): e00352. doi:10.1016/j.cscm.2020.e00352.

Luan, Chenchen, Xiaoshuang Shi, Kuanyu Zhang, Nodir Utashev, Fuhua Yang, Jinxin Dai, and Qingyuan Wang. “A Mix Design Method of Fly Ash Geopolymer Concrete Based on Factors Analysis.” Construction and Building Materials 272 (February 2021): 121612. doi:10.1016/j.conbuildmat.2020.121612.

Patil, Shabarish V., Veeresh B. Karikatti, and Manojkumar Chitawadagi. “Granulated Blast-Furnace Slag (GGBS) Based Geopolymer Concrete - Review Concrete - Review.” International Journal of Advanced Science and Engineering 5, no. 1 (August 24, 2018): 879. doi:10.29294/ijase.5.1.2018.789-885.

Vijai, K., R. Kumutha, and B. G. Vishnuram. "Effect of types of curing on strength of geopolymer concrete." International journal of physical sciences 5, no. 9 (2010): 1419-1423.

Noushini, Amin, Arnaud Castel, James Aldred, and Aditya Rawal. “Chloride Diffusion Resistance and Chloride Binding Capacity of Fly Ash-Based Geopolymer Concrete.” Cement and Concrete Composites 105 (January 2020): 103290. doi:10.1016/j.cemconcomp.2019.04.006.

Nagajothi, S., and S. Elavenil. “Effect of GGBS Addition on Reactivity and Microstructure Properties of Ambient Cured Fly Ash Based Geopolymer Concrete.” Silicon 13, no. 2 (March 26, 2020): 507–516. doi:10.1007/s12633-020-00470-w.

Bellum, Ramamohana Reddy, Ruben Nerella, Sri Rama Chand Madduru, and Chandra Sekhar Reddy Indukuri. “Mix Design and Mechanical Properties of Fly Ash and GGBFS-Synthesized Alkali-Activated Concrete (AAC).” Infrastructures 4, no. 2 (May 2, 2019): 20. doi:10.3390/infrastructures4020020.

Ma, Hongqiang, Hongguang Zhu, Cheng Yi, Jingchong Fan, Hongyu Chen, Xiaonan Xu, and Tao Wang. “Preparation and Reaction Mechanism Characterization of Alkali-Activated Coal Gangue–Slag Materials.” Materials 12, no. 14 (July 12, 2019): 2250. doi:10.3390/ma12142250.

IS 383, “Indian Standard Coarse and Fine Aggregate for Concrete,” Bureau of Indian Standards, (2016).

Reddy, M. Srinivasula, P Dinakar, and B. Hanumantha Rao. “Mix Design Development of Fly Ash and Ground Granulated Blast Furnace Slag Based Geopolymer Concrete.” Journal of Building Engineering 20 (November 2018): 712–722. doi:10.1016/j.jobe.2018.09.010.

Bellum, Ramamohana Reddy, Karthikeyan Muniraj, and Sri Rama Chand Madduru. “Investigation on Modulus of Elasticity of Fly Ash-Ground Granulated Blast Furnace Slag Blended Geopolymer Concrete.” Materials Today: Proceedings 27 (2020): 718–723. doi:10.1016/j.matpr.2019.11.299.

IS 456, “Indian Standard Plain and Reinforced Concrete,” Bureau of Indian Standards, (2000).

ASTM C-293-02, “Standard Test Method for Flexural Strength of concrete (using Simple Beam with Center-Point Loading),” International Standard Organization, (2002).

Hu, Yong, Zhuo Tang, Wengui Li, Yunan Li, and Vivian W.Y. Tam. “Physical-Mechanical Properties of Fly ash/GGBFS Geopolymer Composites with Recycled Aggregates.” Construction and Building Materials 226 (November 2019): 139–151. doi:10.1016/j.conbuildmat.2019.07.211.

Diaz-Loya, E. Ivan, Erez N. Allouche, and Saiprasad Vaidya “Mechanical Properties of Fly-Ash-Based Geopolymer Concrete.” ACI Materials Journal 108, no. 3 (2011). doi:10.14359/51682495.

IS 5816, “Indian Standard Splitting Tensile Strength of Concrete Method of Test,” Bureau of Indian Standards, (1999).

Nath, Pradip, and Prabir Kumar Sarker. “Effect of GGBFS on Setting, Workability and Early Strength Properties of Fly Ash Geopolymer Concrete Cured in Ambient Condition.” Construction and Building Materials 66 (September 2014): 163–171. doi:10.1016/j.conbuildmat.2014.05.080.

Tang, Zhuo, Yong Hu, Vivian W.Y. Tam, and Wengui Li. “Uniaxial Compressive Behaviors of Fly Ash/slag-Based Geopolymeric Concrete with Recycled Aggregates.” Cement and Concrete Composites 104 (November 2019): 103375. doi:10.1016/j.cemconcomp.2019.103375.

Xie, Jianhe, Junjie Wang, Rui Rao, Chonghao Wang, and Chi Fang. “Effects of Combined Usage of GGBS and Fly Ash on Workability and Mechanical Properties of Alkali Activated Geopolymer Concrete with Recycled Aggregate.” Composites Part B: Engineering 164 (May 2019): 179–190. doi:10.1016/j.compositesb.2018.11.067.

Mithanthaya, I.R., Shriram Marathe, N B S Rao, and Veena Bhat. “Influence of Superplasticizer on the Properties of Geopolymer Concrete Using Industrial Wastes.” Materials Today: Proceedings 4, no. 9 (2017): 9803–9806. doi:10.1016/j.matpr.2017.06.270.

Kumar, Sanjay, Rakesh Kumar, and S. P. Mehrotra. “Influence of Granulated Blast Furnace Slag on the Reaction, Structure and Properties of Fly Ash Based Geopolymer.” Journal of Materials Science 45, no. 3 (February 2010): 607–615. doi:10.1007/s10853-009-3934-5.

ACI M318-05, Building Code Requirements for Structural Concrete and Commentary, American Concrete Institude, (2005).

Nath, Pradip, and Prabir Kumar Sarker. “Fracture Properties of GGBFS-Blended Fly Ash Geopolymer Concrete Cured in Ambient Temperature.” Materials and Structures 50, no. 1 (August 10, 2016). doi:10.1617/s11527-016-0893-6.

Fang, Guohao, Wing Kei Ho, Wenlin Tu, and Mingzhong Zhang. “Workability and Mechanical Properties of Alkali-Activated Fly Ash-Slag Concrete Cured at Ambient Temperature.” Construction and Building Materials 172 (May 2018): 476–487. doi:10.1016/j.conbuildmat.2018.04.008.

Code, CEB-FIP Model. "Comité euro-international du béton." Bulletin d’information 213 (1995): 46.

Sofi, M., J.S.J. van Deventer, P.A. Mendis, and G.C. Lukey. “Engineering Properties of Inorganic Polymer Concretes (IPCs).” Cement and Concrete Research 37, no. 2 (February 2007): 251–257. doi:10.1016/j.cemconres.2006.10.008.

Puertas, F., M. Palacios, H. Manzano, J.S. Dolado, A. Rico, and J. Rodríguez. “A Model for the C-A-S-H Gel Formed in Alkali-Activated Slag Cements.” Journal of the European Ceramic Society 31, no. 12 (October 2011): 2043–2056. doi:10.1016/j.jeurceramsoc.2011.04.036.

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DOI: 10.28991/cej-2021-03091708


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