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The Implication of Petrographic Characteristics on the Mechanical Behavior of Middle Eocene Limestone, 15th May City, Egypt

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  • Abdelaziz El Shinawi

    (The Environmental Geophysics Lab (ZEGL), Department of Geology, Faculty of Science, Zagazig University, Zagazig 44511, Egypt)

  • Peter Mésároš

    (Institute of Technology, Economics and Management in Construction, Faculty of Civil Engineering, Technical, University of Košice, 042 00 Košice, Slovakia)

  • Martina Zeleňáková

    (Institute of Environmental Engineering, Faculty of Civil Engineering, Technical, University of Košice, 042 00 Košice, Slovakia)

Abstract

The construction purposes of carbonate rocks are considered a major aspect of using these bedrocks based on their mechanical behavior. Accordingly, the physical and mechanical characterization of Middle Eocene Limestone bedrock in the new urban area at the 15th May City, Egypt was studied to assess the suitability of the carbonate rocks for construction. This study has been carried out to investigate the effect of petrographic characteristics on mechanical properties. To achieve this objective, the intact 30 rock core samples from 15 boreholes were selected at different depths. Based on study of the selected samples in thin sections, the limestone in the area was classified as lime-mudstone, wackestone, and grainstone. Additionally, the uniaxial compressive strength (UCS) and Schmidt Rebound Hammer (Rn) were determined to detect the mechanical properties of the limestone bedrock. The measured parameters (UCS and Rn) demonstrated a high direct relationship with mudstone and a poor direct relationship with dolomite and high negative correlation with wackestone and grainstone. Therefore, the Middle Eocene Limestone bedrock is more durable and has medium-strength, which made it suitable for constructions. Regression analysis was performed to find out some linear relationship between mechanical properties (UCS) with petrographic characteristics. The study reveals significant positive correlation between UCS and Rn with mudstone in accordance higher values of regression coefficient (R 2 = 0.91 and R 2 = 0.036), and an inverse relationship of Rn with dolomite % (R 2 = 0.89 and R 2 = 0.02), respectively. Consequently, the strong confidence on the mechanical parameters opens the way for engineers to predict the mechanical parameters that are required for engineering properties of limestone for the urban expansion.

Suggested Citation

  • Abdelaziz El Shinawi & Peter Mésároš & Martina Zeleňáková, 2020. "The Implication of Petrographic Characteristics on the Mechanical Behavior of Middle Eocene Limestone, 15th May City, Egypt," Sustainability, MDPI, vol. 12(22), pages 1-15, November.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:22:p:9710-:d:448681
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    References listed on IDEAS

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    1. Teresa Stingl Freitas & Ana Sofia Guimarães & Staf Roels & Vasco Peixoto de Freitas & Andrea Cataldo, 2020. "Is the Time-Domain Reflectometry (TDR) Technique Suitable for Moisture Content Measurement in Low-Porosity Building Materials?," Sustainability, MDPI, vol. 12(19), pages 1-16, September.
    2. Marzouk Mohamed Aly Abdelhamid & Dong Li & Gaofeng Ren, 2020. "Predicting Unconfined Compressive Strength Decrease of Carbonate Building Materials against Frost Attack Using Nondestructive Physical Tests," Sustainability, MDPI, vol. 12(4), pages 1-18, February.
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