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Short-Term Performance of Sustainable Silica Fume Mortars Exposed to Sulfate Attack

Author

Listed:
  • José Marcos Ortega

    (Departamento de Ingeniería Civil, Universidad de Alicante, Ap. Correos 99, 03080 Alicante, Spain
    Departamento de Ingeniería Civil, Urbanismo y Aeroespacial, Escuela de Arquitectura, Ingeniería y Diseño, Universidad Europea, c/Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain)

  • María Dolores Esteban

    (Departamento de Ingeniería Civil, Urbanismo y Aeroespacial, Escuela de Arquitectura, Ingeniería y Diseño, Universidad Europea, c/Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain)

  • Mark Williams

    (Engineeria, 7 Ridgmount Street, London WC1E 7AE, UK)

  • Isidro Sánchez

    (Departamento de Ingeniería Civil, Universidad de Alicante, Ap. Correos 99, 03080 Alicante, Spain)

  • Miguel Ángel Climent

    (Departamento de Ingeniería Civil, Universidad de Alicante, Ap. Correos 99, 03080 Alicante, Spain)

Abstract

Nowadays, the reuse of wastes is essential in order to reach a more sustainable environment. The cement production results in CO 2 emissions which significantly contribute to anthropogenic greenhouse gas emissions. One way to reduce them is by partially replacing clinker by additions, such as silica fumes or other wastes. On the other hand, the pore structure of cementitious materials has a direct influence on their service properties. One of the most popular techniques for characterizing the microstructure of those materials is mercury intrusion porosimetry. In this work, this technique has been used for studying the evolution of the pore network of mortars with different percentages of silica fume (until 10%), which were exposed to aggressive sodium and magnesium sulfate solutions up to 90 days. Between the results of this technique, intrusion-extrusion curves and logarithms of differential intrusion volume versus pore size curves were studied. This characterization of the pore network of mortars has been complemented with the study of their compressive strength and their steady-state ionic diffusion coefficient obtained from samples’ resistivity. Generally, silica fume mortars showed different performance depending on the aggressive condition, although the greatest deleterious effects were observed in the medium with presence of both magnesium and sodium sulfates.

Suggested Citation

  • José Marcos Ortega & María Dolores Esteban & Mark Williams & Isidro Sánchez & Miguel Ángel Climent, 2018. "Short-Term Performance of Sustainable Silica Fume Mortars Exposed to Sulfate Attack," Sustainability, MDPI, vol. 10(7), pages 1-14, July.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:7:p:2517-:d:158635
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    Citations

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    Cited by:

    1. Murat Türköz & Seyfettin Umut Umu & Ogan Öztürk, 2021. "Effect of Silica Fume as a Waste Material for Sustainable Environment on the Stabilization and Dynamic Behavior of Dispersive Soil," Sustainability, MDPI, vol. 13(8), pages 1-19, April.
    2. Daming Luo & Yan Wang & Shaohui Zhang & Ditao Niu, 2020. "Application of Fuzzy and Rough Sets to Environmental Zonation for Concrete Durability: A Case Study of Shaanxi Province, China," Sustainability, MDPI, vol. 12(8), pages 1-20, April.
    3. Victoria Eugenia García-Vera & Antonio José Tenza-Abril & Marcos Lanzón & José Miguel Saval, 2018. "Exposing Sustainable Mortars with Nanosilica, Zinc Stearate, and Ethyl Silicate Coating to Sulfuric Acid Attack," Sustainability, MDPI, vol. 10(10), pages 1-14, October.

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