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Using Natural Pozzolans to Partially Replace Cement in Pervious Concretes: A Sustainable Alternative?

Author

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  • Ignacio Oviedo

    (Departamento de Ingeniería Civil, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo3, Concepción 4030000, Chile)

  • Mauricio Pradena

    (Departamento de Ingeniería Civil, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo3, Concepción 4030000, Chile)

  • Óscar Link

    (Departamento de Ingeniería Civil, Universidad de Concepción, Edmundo Larenas 219, Casilla 160-C Correo3, Concepción 4030000, Chile)

  • José T. Balbo

    (Escola Politécnica, Departamento de Engenharia de Transportes, Universidade de São Paulo, Cidade Universitária, São Paulo 05508-010, SP, Brazil)

Abstract

Concrete is one of the most widely used construction materials all around the globe. Associated with urban expansion, concrete pavements increase the impermeable surfaces that affect the hydrological cycle and generate urban heat islands. Cement is one of the main components of concrete, and its production is one of the main sources of worldwide CO 2 emissions. Pervious concrete with partial cement replacement represents a more sustainable alternative. In this paper, the use of natural pozzolans zeolite and pumicite, as partial cement replacement materials in pervious concrete mixtures, is analyzed. The mechanical and hydraulic properties of pervious concretes using different percentages of pumicite and zeolite to replace cement (0% to 20%) were evaluated by a series of tests on compressive strength, flexural strength, permeability, porosity, and a microanalysis by SEM for the samples. Additionally, experiments with a plasticizer additive were conducted. The results show that mixtures with 0.35 W/C ratio present better mechanical and hydraulic properties; pumicite shows a better performance than zeolite, with the better properties achieved at 10% cement replacement; and the addition of plasticizer increased the final strengths. It is recommended to partially replace cement by adding 10% pumicite and to consider using 0.7% of plasticizer.

Suggested Citation

  • Ignacio Oviedo & Mauricio Pradena & Óscar Link & José T. Balbo, 2022. "Using Natural Pozzolans to Partially Replace Cement in Pervious Concretes: A Sustainable Alternative?," Sustainability, MDPI, vol. 14(21), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:21:p:14122-:d:957125
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    References listed on IDEAS

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    1. Eduardo-Javier Elizondo-Martínez & Valerio-Carlos Andrés-Valeri & Jorge Rodríguez-Hernández & Cesare Sangiorgi, 2020. "Selection of Additives and Fibers for Improving the Mechanical and Safety Properties of Porous Concrete Pavements through Multi-Criteria Decision-Making Analysis," Sustainability, MDPI, vol. 12(6), pages 1-21, March.
    2. Valerio C. Andrés-Valeri & Mariana Marchioni & Luis Angel Sañudo-Fontaneda & Filippo Giustozzi & Gianfranco Becciu, 2016. "Laboratory Assessment of the Infiltration Capacity Reduction in Clogged Porous Mixture Surfaces," Sustainability, MDPI, vol. 8(8), pages 1-11, August.
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    Cited by:

    1. Peiyuan Zhuang & Xinjun Yan & Xuehu Wang & Jiaqi Liu, 2024. "Study on the Performance Optimization of Plant-Growing Ecological Concrete," Sustainability, MDPI, vol. 16(11), pages 1-19, May.

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