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Feasibility Analysis of Mortar Development with Ornamental Rock Waste for Coating Application by Mechanized Projection

Author

Listed:
  • Ana Luiza Paes

    (Laboratory of Advanced Materials, State University of the Northern Rio de Janeiro, Campos dos Goytacazes 28013-602, Brazil)

  • Jonas Alexandre

    (Civil Engineering Laboratory, State University of the Northern Rio de Janeiro, Campos dos Goytacazes 28013-602, Brazil)

  • Gustavo de Castro Xavier

    (Civil Engineering Laboratory, State University of the Northern Rio de Janeiro, Campos dos Goytacazes 28013-602, Brazil)

  • Sérgio Neves Monteiro

    (Department of Materials Science, IME—Military Institute of Engineering, Square General Tibúrcio, 80, Rio de Janeiro 22290-270, Brazil)

  • Afonso Rangel Garcez de Azevedo

    (Civil Engineering Laboratory, State University of the Northern Rio de Janeiro, Campos dos Goytacazes 28013-602, Brazil)

Abstract

The industrial production of lime generates greenhouse gases, which contributes to increase the global warming. Therefore, the present study evaluated the feasibility of replacing lime by ornamental rock waste (ORW) as a by-product of the related stone industry, and developed a cost-effective mortars. These new low-costing mortars are intended as fresh fluid paste coatings to be applied on walls by the mechanized projection technique. The ornamental rock waste was collected from a marble and granite industry as ground stone. It was finely crushed before mixing with cement, sand, water and superplasticizer in amounts of 1.0% (R01), 1.2% (R02) and 1.3% (R03), to prepare the mortars, which had the mixture, cement: ORW: sand, 1:1:4 in wt.%. These novel mortars were characterized in both fresh, for well projection, and hardened state, to evaluate the properties after curing performance. The results showed that mortar R03, achieved the best results and did not present cracks in the hardened state. Its water retention was found above 30%. Both tensile strength of 0.312 MPa and compressive strength 7.88 MPa, which are above the corresponding minimum required by the standard for external coating. Water absorption by immersion of 19.37% and void content of 20.23% were close to the corresponding values for hydrated lime mortar. Dry shrinkage showed that the new R03 mortar reached more than 90% of their total retraction at 7 days of cure without sign of cracking. These findings revealed the R03/ornamental rock waste -based mortar applied by mechanized projection as a promising sustainable substitute for common lime-based mortar.

Suggested Citation

  • Ana Luiza Paes & Jonas Alexandre & Gustavo de Castro Xavier & Sérgio Neves Monteiro & Afonso Rangel Garcez de Azevedo, 2022. "Feasibility Analysis of Mortar Development with Ornamental Rock Waste for Coating Application by Mechanized Projection," Sustainability, MDPI, vol. 14(9), pages 1-16, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5101-:d:800565
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    References listed on IDEAS

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    1. Afonso R. G. Azevedo & Alan Marinho Costa & Daiane Cecchin & Carlos Rodrigues Pereira & Markssuel Teixeira Marvila & Adeyemi Adesina, 2022. "Economic potential comparative of reusing different industrial solid wastes in cementitious composites: a case study in Brazil," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(4), pages 5938-5961, April.
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    Cited by:

    1. Joabi Faustino Ferreira & Fabiana Pereira da Costa & Luiz Fhelipe Diniz Borborema & Rafaela Reis de Arimateia & Raquel Santos Leite & Raira Chefer Apolinário & Haroldo Cavalcanti Pinto & Alisson Mende, 2022. "Incorporation of Bentonite Mining Waste in Ceramic Formulations for the Manufacturing of Porcelain Stoneware," Sustainability, MDPI, vol. 14(23), pages 1-15, November.

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