Corrosion of the Pozzolan Concrete in Sulfates

Abstract:

Sulfate attack and its effects are important from both scientific and industrial viewpoints. Itis perceived that cements containing pozzolan have better performance in sulfate solutions,since the pozzolanic reactions reduce the quantity of calcium hydroxide and increasecalcium silicate hydrate. This paper investigates the physical and mechanical properties ofconcretes made by blended cement containing Algerian natural pozzolan of volcanic origin, and Portland cement. in order to better determine the pozzolanic effect of the pozzolan addition in the concrete, the analysis of the experimental results of the effect of the partial replacement of the cement by the naturalpozzolana showed that it contributes positively to the improvement of its mechanical characteristics, its durability with respect to the permeability to the chlorine ions, the ultrasonic pulse velocity as well as the sulphate resistance. The present study confirms the pozzolanic reactivity of the natural pozzolans used.

• Periodical: Advanced Materials Research (Volume 911)
• Pages: 494-498
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.911.494
• Online since: March 2014
• Authors: Ahcene Merida*, Fattoum Kharchi
• Keywords: Compressive Strength, Durability, High-Performance Concrete (HPC), Natural Pozzolana, Pozzolanic Reactivity, Sulphate

References

[1] Nadler, B. Schuss, Z. Singer, A. Eisenberg, R.S., Ionic Diffusion ThroughProtein Channels: From molecular description to continuum equations, Technical Proceedings of the Nanotechnology Conference and Trade Show, 2003, Vol. 3, pp.439-442.

[2] Truc, O., Prediction of Chloride Penetration into Saturated Concrete– Multispecies approach, Chalmers University of Technology, Gutenberg, Sweden, INSA, Toulouse, France2000.

[3] Atkinson, A. Haxby, A. and Hearne, J.A., The Chemistry and Expansion of Limestone-Portland Cement Mortars Exposed to Sulphate-Containing SolutionsNIREX Report NSS/R127, United Kingdom, (1988).

[4] Skalny,J. Marchand, J. and Odler., I, Sulphate Attack on Concrete, Spon Press, London, United Kingdom, (2002).

[5] Tixier, R. Mobasher, B., Modeling of damage in cement-based materials subjected to external sulfate attack – part 1: formulation. ASCE J Mater Eng, 2003, Vol. 15, N°. 4, p.305–313.

DOI: 10.1061/(asce)0899-1561(2003)15:4(305)

[6] Bentz, DP. Garbicz, EJ., Simulation studies of the effects of mineral admixtures on the cement paste aggregate interfacial zone. ACI Mater J, 1991, Vol. 88, N°. 5, p.518–529.

DOI: 10.14359/2179

[7] Shamaran, M. Kasap, O. Duru, K. and Yaman, IO., Effect of mix composition and watercement ratio on the sulfate resistance of blended cements, Cement and ConcreteComposites, Vol. 29, N°. 3, 2007, pp.159-167.

DOI: 10.1016/j.cemconcomp.2006.11.007

[8] Saricimen, H. Shameem, M. Barry, MS. Ibrahim, M. and Abbasi, TA., Durability of proprietary cementitious materials for use in wastewater transport systems, Cement and Concrete Composites, Vol. 25, N°4-5, 2003, pp.421-427.

DOI: 10.1016/s0958-9465(02)00082-3

[9] Chang, ZT. Song, XJ. Munn, R. and Marosszeky, M., Using limestone aggregate and different cements for enhancing resistance of concrete to sulfuric acid attack, Cement andConcrete Research, Vol. 35, N°. 8, 2005, pp.1486-1494.

DOI: 10.1016/j.cemconres.2005.03.006

[10] Sersale, R. Frigione, G. and Bonavita L., Acid depositions and concrete attack: Maininfluences, Cement and Concrete Research, Vol. 28, N°. 1, 1998, pp.19-24.

DOI: 10.1016/s0008-8846(97)00193-2