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Analysis of Porosity-Water/Binder Index for Prediction of Strength and Stiffness of Cemented Sands: A Comparative Study.

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  • Additional Information
    • Source:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 101555929 Publication Model: Electronic Cited Medium: Print ISSN: 1996-1944 (Print) Linking ISSN: 19961944 NLM ISO Abbreviation: Materials (Basel) Subsets: PubMed not MEDLINE
    • Publication Information:
      Publication: May 2010- : Basel, Switzerland : MDPI
      Original Publication: Basel, Switzerland : Molecular Diversity Preservation International, 2008-2010.
    • Abstract:
      Artificial sand cementation improves stability, stiffness, and mechanical strength, making it a critical process in geotechnical applications. This study analyzes the capability of the porosity-water/binding agent index (ηCw/Biv) to predict cemented sands' unconfined compressive strength (qu) and stiffness (Go). Four Colombian sands, i.e., Luruaco, Medellín, Lorica, and Bogotá (stabilized with Portland cement), and were compared with three Brazilian sands: i.e., Osorio, Porto Alegre, and Rio Pardo were evaluated, stabilized with combinations of carbide lime and glass powder, using varying binder contents and a curing period of seven days subjected to ultrasonic pulse velocity (UPV) tests and unconfined compressive strength (UCS) tests. The results indicate that incorporating water content into the index significantly enhances predictive accuracy, achieving R 2 values above 0.94 for Colombian sands and considerably better fits for Brazilian sands than the traditional porosity/binder index. This new alternative provides an appropriate parameter for representing the small-strain stiffness and unconfined compressive strength of artificially cemented sands stabilized with various types of binders. Furthermore, the new index proved to be more effective in predicting the behavior of uniform and loose-graded sands, such as those from Bogotá and Lorica, which rely more heavily on binder volume and water content to achieve greater strength and stiffness. Lastly, the predictive model, validated against experimental results, achieved reliability indices (R 2 ) of 0.9791 for stiffness and 0.9799 for strength prediction.
    • References:
      Materials (Basel). 2023 Jul 13;16(14):. (PMID: 37512258)
      Environ Sci Pollut Res Int. 2023 Mar;30(14):42176-42191. (PMID: 36645596)
      Materials (Basel). 2023 Sep 22;16(19):. (PMID: 37834490)
      Materials (Basel). 2024 Feb 17;17(4):. (PMID: 38399174)
      Materials (Basel). 2023 Jan 15;16(2):. (PMID: 36676581)
      Materials (Basel). 2024 Oct 24;17(21):. (PMID: 39517469)
    • Grant Information:
      Project N° ING-39-24 The Fundación Universitaria Los Libertadores-Colombia
    • Contributed Indexing:
      Keywords: artificially cemented; porosity–water/binder index; sands; stiffness; unconfined compressive
    • Publication Date:
      Date Created: 20250125 Latest Revision: 20250128
    • Publication Date:
      20250128
    • Accession Number:
      PMC11766628
    • Accession Number:
      10.3390/ma18020268
    • Accession Number:
      39859739