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Regrouting joints and its effect on the stress-strain state of the Inguri arch dam

  • Science: Theory, Experiment, Practice
  • Published:
Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    Complete regrouting of the Inguri arch dam specified by a special project was a necessary and timely final general construction operation carried out with a high quality.

  2. 2.

    The high quality of grouting the dam was due to the combined use of new highly effective universal technologies for conditions of small, supersmall, and nonuniform opening of construction joints — high-penetrability cement grouts; for conditions of leaking sites — grouts with a regulated time of loss of fluidity

  3. 3.

    For the first time in domestic practice, reliable experience was obtained in second regrouting of joints 8 years after performing the first. Both groutings were carried out with high-penetrability dispersed grouts through the same reusable pipe system.

  4. 4.

    Regrouting of construction joints with the use of new technologies improved the stress-strain state of the arch dam by increasing its rigidity due to the creation of prestresses in the concrete.

  5. 5.

    Harsh operation of the arch dam for 15 years led to a gradual increase, starting in 1989, of deflections of the dam related to relaxation of prestresses in the concrete due to inadequate decompression of the rock foundation during these years. To maximally postpone this process, in our opinion, simultaneously with grouting the dam it was necessary to carry out blanket regrouting of the rock in the wall abutments of the dam, especially in their upper part.

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References

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Authors
  1. V. A. Ashikhmen
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  2. L. É. Pronina
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Additional information

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 10, pp. 1–9, October, 1994.

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Ashikhmen, V.A., Pronina, L.É. Regrouting joints and its effect on the stress-strain state of the Inguri arch dam. Hydrotechnical Construction 28, 569–580 (1994). https://doi.org/10.1007/BF01545937

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  • DOI: https://doi.org/10.1007/BF01545937

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