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<p>The seepage water from mansonry gravity dams often has a higher proportion of sodium, magnesium and calcium than the water in the reservoir. An extensive program was carried out at the approximately 100-year-old Lehnmühle dam to investigate whether this elution affected the stability of the dam. The examination of the mechanical and mineralogical properties of the concrete showed that the load-bearing concrete matrix is not affected. Supplementary time-lapse experiments indicated that there are no concerns about a global reduction in the strength of the dam body over a long period of time. The results of the tests allowed considerable savings to be made in the retrofitting work compared to the original preliminary planning.</p>

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„Steter Tropfen …“ - Festigkeitsverluste bei Bruchstein-Staumauern?

  • 期刊论文

  • 发表日期：

    2025年3月20日

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  • Diethelm Linse,
  • Michael Humbsch,
  • Carsten Cherubim

摘要

The seepage water from mansonry gravity dams often has a higher proportion of sodium, magnesium and calcium than the water in the reservoir. An extensive program was carried out at the approximately 100-year-old Lehnmühle dam to investigate whether this elution affected the stability of the dam. The examination of the mechanical and mineralogical properties of the concrete showed that the load-bearing concrete matrix is not affected. Supplementary time-lapse experiments indicated that there are no concerns about a global reduction in the strength of the dam body over a long period of time. The results of the tests allowed considerable savings to be made in the retrofitting work compared to the original preliminary planning.