Improving the Safety of Railway Subgrade When it is Strengthened Using Soil-Cement Elements

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Dnipro National University of Railway Transport named after Academician V. Lazaryan
ENG: Abstract. The article identifies the main parameters of the drilling-mixing technology, which is the most effective in fixing weak soil bases during the construction and restoration of transport, industrial and civil structures. The difference of the technology developed by the authors is that the strengthening process is carried out at low pressure (0.15 ... 0.25 MPa). The relevance of the research is that the proposed technology requires less cost with high rates of restoring the strength of soil foundations. To prove the high quality of the technology, laboratory studies were carried out to determine the optimal characteristics of the soil-cement element, as well as the proportions and composition of the fixing solution. The dependences of the strength of soil-cement elements in the air-dry condition with cement content from 7% to 23% with water-cement ratio in solution 1 / 0.3 and with cement content from 13% to 37.5% with water-cement ratio in solution 1/0,6. During the experimental-industrial studies of the author's technology, the embankment was constructed with the soil-cement-reinforced elements for the access road approaches at one of the facilities in Kirovograd region, which ensured safety in the operation of a complex transport structure.
V. Petrenko: ORCID 0000-0003-2201-3593; O. Tiutkin: ORCID 0000-0003-4921-4758; V. Andrieiev: ORCID 0000-0002-0862-2790
drilling-mixing, soil foundations, soil cement elements, reinforced soil, КМТ, КККГ
Improving the Safety of Railway Subgrade When it is Strengthened Using Soil-Cement Elements [Electronic resource] / Vitalii Krysan, Volodymyr Krysan, Volodymyr Petrenko, Oleksii Tiutkin, Volodymyr Andrieiev // MATEC Web of Conferences. – 2019. – Vol. 294 : 2nd International Scientific and Practical Conference “Energy-Optimal Technologies, Logistic and Safety on Transport” (EOT-2019). – P. 1–5. – Access Mode: (21.10.2019). – DOI: 10.1051/matecconf/201929403006.