Influence of Additives on Reinforced Concrete Durability

Open access

Abstract

The article presents the results of the research on carbonation and chloride induced corrosion mechanisms in reinforced concrete structures, based on three commercially available concrete admixtures: Xypex Admix C-1000, Penetron Admix and Elkem Microsilica. Carbonation takes place due to carbon dioxide diffusion, which in the required amount is present in the air. Chlorides penetrate concrete in case of the use of deicing salt or structure exploitation in marine atmosphere. Based on the implemented research, Elkem Microsilica is the recommended additive for the use in aggressive environmental conditions. Use of Xypex Admix C-1000 and Penetron Admix have only average resistance to the aggressive environmental impact.

[1] F. Radomir, “Durability Design of Concrete Structures - part 1: analysis fundamentals,” Facta universitatis - series: Architecture and Civil Engineering, 2009, vol. 7, no. 1, pp. 1-18. http://dx.doi.org/10.2298/FUACE0901001F

[2] A. Badaoui, M. Badaoui, F. Kharchi, “Probabilistic Analysis of Reinforced Concrete Carbonation Depth,” Materials Sciences and Applications, vol. 4. pp. 205-215, 2013. http://dx.doi.org/10.4236/msa.2013.43A025

[3] “Cement Concrete & Aggregate Australia. Chloride Resistance of Concrete,” Cement Concrete & Aggregate Australia, [Online]. Available: http://www.ccaa.com.au/imis_prod/documents/Library%20Documents/CCAA%20Reports/Report%202009%20ChlorideResistance.pdf, p. 37, 2009 [Nov. 29, 2014].

[4] M. Boulfiza, K. Sakai, N. Banthia, H.Yoshida. “Analytical Study on Synergetic Effects of Carbonation and Chloride Ion Attacks on Concrete,” in: Proceedings of the Japan Concrete Institute, vol. 23, 2001, pp. 439-444.

[5] Monolīto, salikto betona un dzelzsbetona konstrukciju hidroizolācijas un pretkorozijas apstrādes darbu projektēšanas un veikšanas tehnoloģiskais reglaments. Maskava, PO “KIHRPS”, 2008, p. 48.

[6] Xypex Chemical Corporation, “Xypex Admix C-1000” datasheet, Apr. 2013.

[7] Elkem AS Silicon Materials, “Elkem Microsilica Grade 971” datasheet, Apr. 2013.

[8] EN 206-1:2000: Concrete - Part 1: Specification, Performance, Production and Conformity. CEN, 2000, p.72.

[9] H. Cheng, I. N. Robertson, “Performance of Admixtures Intended to Resist Corrosion in Concrete Exposed to a Marine Environment,” University of Hawaii College of Engineering, Department of Civil and Environmental Engineering, Rep. no. UHM/CEE/06-08, 2006, pp. 152.

[10] NORDTEST, “Concrete, Repairing Materials and Protective Coating Carbonation Resistance,” Finland Test method NT BUILD 357, Sep. 1989.

[11] NORDTEST, “Concrete, Mortar and Cement-Based Repair Materials: Chloride Migration Coefficient from Non-Steady-State Migration Experiments,” Finland Test method NT BUILD 492, Nov. 1999.

[12] EN 12390-3:2002: Testing Hardened Concrete - Part 3: Compressive Strength of Test Specimens. CEN, 2001, p.19.

[13] R. Siddique, M. I. Khan. Supplementary Cementing Materials. Springer, 2011, pp. 288.

[14] C. Edvardsen, M. T. Jepsen. “Chloride Migration Coefficient from Non- Steady-State Migration Experiments at Environment-Friendly “Green” Concrete,” in: 2nd International RILEM Workshop on Testing and Modelling the Chloride Ingress into Concrete. - RILEM Publications SARL, 2000, pp. 203-209.

[15] E. Vesikari. “Carbonation and Chloride Penetration in Concrete with Special Objective of Service Life Modelling by Factor Approach,” Research report, Technical Research Centre of Finland (VTT), 2009.

Journal Information

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 267 267 32
PDF Downloads 99 99 11