Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) на платформе Web of Science


  • BUILDING MATERIALS AND PRODUCTS
  • Quality Control Of Bored Piles Using Ferromagnetic Water Suspension
  • UDC 66.086 DOI: 10.33622/0869-7019.2021.04.28-32
    Ìaria A. AVDUSHEVA, e-mail: m.avdusheva@narfu.ru
    Arkady M. AYZENSHTADT, e-mail: a.isenshtadt@narfu.ru
    Alexander L. NEVZOROV, e-mail: a.nevzorov@narfu.ru
    Northern (Arctic) Federal University named after M. V. Lomonosov, Severnaya Dvina Emb. 17, Arkhangelsk 163002, Russian Federation
    Abstract. Typical defects of bored piles are damages of shaft integrity, such as necking defects, water intrusions etc. They are defined by traditional quality control methods after development of strength, when the defects cannot be eliminated. In this case, the bearing capacity of the foundation is provided by setting of the additional piles. The authors proposed a quality control method, which consists in measuring the electrical conductivity of the concrete mixture. A finely dispersed electrically conductive additive is added to the mixture. For example, this additive is magnetite. The uniformity of distribution of the additive in the concrete mixture is completed by using for addition of suspension and water to a concrete mix. The advantage of the method is the identification and elimination of defects during concreting. Laboratory studies have determined the optimal composition of a finely dispersed additive, and also established the dependence of the specific electrical conductivity of the mixture on the concentration of the additive and the frequency of the alternating current. The results obtained can serve as a scientific basis for the created methods for monitoring the continuity of the bored pile shaft in the process of performing work on the values of the electrical conductivity of the concrete mixture after concreting.
    Key words: aggregate stability, ferromagnetic suspension, finely-dispersed magnetite, mortar mix, bored pile, electrical conductivity, quality control.
  • REFERENCES
    1. Mangushev R. A., Ershov A. V., Osokin A. I. Sovremennye svaynye tekhnologii [Modern pile technologies]. Moscow, ASV Publ., 2010. 235 p. (In Russian).
    2. Shulyatev O. A., Mozgacheva O. A., Pospekhov V. S. Osvoenie podzemnogo prostranstva gorodov: nauchnoe izdanie [Development of the underground space of cities]. Moscow, ASV Publ., 2017. 510 p. (In Russian).
    3. Mangushev R. A., Ponomarev A. B. On the issue of quality control of manufacturing and acceptance of bored piles. Vestnik PNIPU. Stroitel'stvo i arkhitektura, 2014, no. 3, pp. 88-111. (In Russian).
    4. Hussein M. N., Likins G. Deep foundations quality control and quality assurance testing methods. Florida Engineering Society Journal, 2005, March, pp. 10-13.
    5. Beckhaus K., Heinzelmann H. Ultrasonic integrity testing for bored piles - a challenge. Proceedings of the Int. Symp. on Non-Destructive Testing in Civil Engineering, 2015, pp. 694-701.
    6. Rukovodstvo dlya proektirovshchikov k Evrokodu 7: Geotekhnicheskoe proektirovanie - obshchie pravila [Guide for designers to Eurocode 7: Geotechnical design-General rules]. Moscow, MGSU Publ., 2013. 360 p. (In Russian).
    7. Zharikov I. S., Laketich A., Laketich N. Influence of the quality of concrete works on the strength of concrete of monolithic structures. Stroitel'nye materialy i izdeliya, 2018, vol. 1, no. 1, pp. 51-58. (In Russian).
    8. Patent RF 2165495, MPK E02D5/46. Method for monitoring the characteristics of a liquid column during its formation. Gerus S. V., Dementienko V. V., Mirgorodskiy V. I., 1999. (In Russian).
    9. Patent RF ¹2538362, MPK G01K 13/00. Pile control device and method of its use. Pisksalko D. R., Raush F., Kotton D. A., Ferens M., 2011. (In Russian).
    10. Patent RF ¹2642760, MPK E02D33/00. Method for detecting and eliminating defects of a pile made in the ground. Avdusheva M. A., Nevzorov A. L., Ayzenshtadt A. M., 2017. (In Russian).
    11. Avdusheva M. A., Nevzorov A. L. Effect of magnetite on the electrical conductivity of the solution mixture. Stroitel'nye materialy, 2017, no. 11, pp. 55-58. (In Russian).
    12. Pukharenko Yu. V., Aubakirova I. U., Nikitin V. A. et al. Modification of cement composites with mixed fulleroid nanocarbon materials. Tekhnologii betonov, 2013, no. 12, pp. 13-15. (In Russian).
  • For citation: Avdusheva Ì. A., Ayzenshtadt A. M., Nevzorov A. L. Quality Control of Bored Piles Using Ferromagnetic Water Suspension. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2021, no. 4, pp. 28-32. (In Russian). DOI: 10.33622/0869-7019.2021.04.28-32.

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