DURABILITY OF NATURAL POZZOLAN-BASED MORTAR EXPOSED TO SULFATE ATTACK

Authors

  • L. Laoufi University of Mascara Algérie
  • Y. Senhadji Université de Mascara
  • A. Benazzouk Université de picardie Amiens France
  • L. Thierry Université de picardie Amiens France
  • M. Mouli Université de Oran Algérie
  • I. Laoufi université de Mascara

DOI:

https://doi.org/10.4314/jfas.v8i2.7

Keywords:

Pouzzolane naturelle, attaque chimique, durabilité, sulfate de sodium, pH, perte de masse

Abstract

Cement is a strategic commodity in the civil engineering for the construction of reinforced concrete structures. But its production generates around 5% of toxic gases such as CO2 responsible for environmental degradation. Furthermore, cement industry is a consumer sector of non-renewable energy. The use in the cement of natural additions is a solution to reduce the CO2 gas and the cost of production. The purpose of this work is the study of a sustainable building material: natural pozzolan Beni-saf (PNB) incorporated to mortars exposed to sulfate attack (5% Na2SO4). The loss of mass, monitoring the pH reading of each attack solution as well as specimens dimensions are different tests to study the durability of mortars made with 10, 20 and 30% of natural pozzolan. The result derived from this research is that pozzolan improves mortars resistance to sodium sulfate environment.

References

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Published

2016-05-01

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Section

Research Articles