Abstract
In this paper, the effect of molarity of sodium hydroxide (NaOH) solution on corrosion behaviour of reinforcing steel in chloride contaminated geopolymer concrete (GPC) prepared with fly ash and GGBS was studied for different GGBS replacement levels. In this work, GPC was prepared with various molarity of NaOH solution such as 8, and 14 M with GGBS replacement levels of 0, 15, and 45%. Sodium chloride concentrations of 0 and 3% of geopolymer solids (by mass) were added to the alkaline liquid during the preparation time of GPC mixtures. Prismatic reinforced GPC specimens were made for half-cell potential measurement and corrosion current density (Icorr) by linear polarization resistance (LPR) measurement. The obtained results showed that the 28 days compressive strength of GPC increased with raise in molarity (i.e. from 8 to 14 M) of NaOH solution. Further, higher compressive strength was achieved in all the GPC mixes made with 45% GGBS replacement level as compared to other replacement levels. In addition, decrease in compressive strength was observed in GPC mixes added with 3% sodium chloride (NaCl). The higher probability of occurrence of corrosion and higher Icorr of steel reinforcement were observed in 3% NaCl admixed geopolymer concrete. The increase in Icorr of steel reinforcement was observed with raise in molarity of NaOH solution. Further, the Icorr of steel reinforcement in GPC decreased with increase in GGBS replacement level i.e. from 15 to 45%.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Wardhono A, Gunasekara C, Law DW, Setunge S (2017) Comparison of long term performance between alkali activated slag and fly ash geopolymer concretes. Constr Build Mater 143:272–279
Madlool NA, Saidur R, Hossain MS, Rahim NA (2011) A critical review on energy use and savings in the cement industries. Renew Sustain Energy Rev 15(4):2042–2060
Shi C, Jiménez AF, Palomo A (2011) New cements for the 21st century: the pursuit of an alternative to Portland cement. Cem Concr Res 41(7):750–763
Valencia-Saavedra W, Mejía de Gutiérrez R, Gordillo M (2018) Geopolymeric concretes based on fly ash with high unburned content. Constr Build Mater 165:697–706
Hadi MNS, Farhan NA, Sheikh MN (2017) Design of geopolymer concrete with GGBFS at ambient curing condition using Taguchi method. Constr Build Mater 140:424–431
Olivia M, Nikraz H (2012) Properties of fly ash geopolymer concrete designed by Taguchi method. Mater Des 36(1):191–198
Gunasekara C, Law D, Bhuiyan S, Setunge S, Ward L (2019) Chloride induced corrosion in different fly ash based geopolymer concretes. Constr Build Mater 200:502–513
Tennakoon C, Shayan A, Sanjayan JG, Xu A (2017) Chloride ingress and steel corrosion in geopolymer concrete based on long term tests. Mater Des 116:287–299
ASTM C876-15 (2016) ASTM C 876 standard test method for corrosion potentials of uncoated reinforcing steel in concrete. Annu B ASTM Stand 1–8
Pradhan B (2014) Corrosion behavior of steel reinforcement in concrete exposed to composite chloride-sulfate environment. Constr Build Mater 72:398–410
Fang G, Ho WK, Tu W, Zhang M (2018) Workability and mechanical properties of alkali-activated fly ash-slag concrete cured at ambient temperature. Constr Build Mater 172:476–487
Zaheer M, Khan N, Shaikh A, Hao Y, Hao H (2016) Synthesis of high strength ambient cured geopolymer composite by using low calcium fly ash. Constr Build Mater 125:809–820
Giasuddin HM, Sanjayan JG, Ranjith PG (2013) Strength of geopolymer cured in saline water in ambient conditions. Fuel 107:34–39
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Sadangi, S.C., Pradhan, B. (2022). Effect of Alkaline Liquid and GGBS Replacement Level on Corrosion Behaviour of Reinforcing Steel in Chloride Contaminated Geopolymer Concrete Made with Fly Ash and GGBS. In: Marano, G.C., Ray Chaudhuri, S., Unni Kartha, G., Kavitha, P.E., Prasad, R., Achison, R.J. (eds) Proceedings of SECON’21. SECON 2021. Lecture Notes in Civil Engineering, vol 171. Springer, Cham. https://doi.org/10.1007/978-3-030-80312-4_59
Download citation
DOI: https://doi.org/10.1007/978-3-030-80312-4_59
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-80311-7
Online ISBN: 978-3-030-80312-4
eBook Packages: EngineeringEngineering (R0)