Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics
Introduction. Determination of strength and deformation characteristics of soils composing the soil mass is the key process of calculation and design of structures of all types. High accuracy in determining mechanical characteristics plays a huge role at every stage of project development. Triaxial...
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Moscow State University of Civil Engineering (MGSU)
2024-09-01
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| Online Access: | https://www.vestnikmgsu.ru/jour/article/view/376 |
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| author | A. Z. Ter-Martirosyan G. O. Angelo L. Yu. Ermoshina I. A. Bokov |
| author_facet | A. Z. Ter-Martirosyan G. O. Angelo L. Yu. Ermoshina I. A. Bokov |
| author_sort | A. Z. Ter-Martirosyan |
| collection | DOAJ |
| description | Introduction. Determination of strength and deformation characteristics of soils composing the soil mass is the key process of calculation and design of structures of all types. High accuracy in determining mechanical characteristics plays a huge role at every stage of project development. Triaxial compression units are one of the most popular and widely used devices for laboratory research, as this type of testing allows you to reproduce the stress-strain state of the soil mass and determine its mechanical characteristics most accurately.Materials and methods. Experimental studies were performed on clay soil specimens (sandy loam, loam, clay) in a triaxial compression device in a consolidated-drained mode in order to study the effect of the coefficient of non-uniformity of expansion of the soil specimen on its mechanical properties.Results. Analyzing the data of experimental studies, it was found that the coefficient of non-uniformity of expansion of specimen b has a significant effect on the obtained values of the mechanical characteristics of clay soil, namely: the values of the angle of internal friction in the medium increased by 5 %; the values of specific adhesion increased by 4.4 % on average. However, it should be noted that despite the increase in the strength characteristics of the tested soil specimens, the exclusion of the coefficient b from the treatment process led to a decrease in the values of the secant deformation modulus at 50 % strength E50 by an average of 4.5 %.Conclusions. The obtained overestimated values of strength characteristics φ, c and underestimated values of deformation characteristics E50 are not critical, however, to increase the accuracy of calculations performed based on the results obtained as a result of in-house processing of laboratory test specimens, the coefficient of uneven expansion b of the specimen should be taken into account. |
| format | Article |
| id | doaj-art-71881224ff624067a8e896b990518c18 |
| institution | Kabale University |
| issn | 1997-0935 2304-6600 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Moscow State University of Civil Engineering (MGSU) |
| record_format | Article |
| series | Vestnik MGSU |
| spelling | doaj-art-71881224ff624067a8e896b990518c182025-01-09T08:22:50ZengMoscow State University of Civil Engineering (MGSU)Vestnik MGSU1997-09352304-66002024-09-011991530154010.22227/1997-0935.2024.9.1530-1540173Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristicsA. Z. Ter-Martirosyan0G. O. Angelo1L. Yu. Ermoshina2I. A. Bokov3Moscow State University of Civil Engineering (National Research University) (MGSU)Moscow State University of Civil Engineering (National Research University) (MGSU)Moscow State University of Civil Engineering (National Research University) (MGSU)Moscow State University of Civil Engineering (National Research University) (MGSU)Introduction. Determination of strength and deformation characteristics of soils composing the soil mass is the key process of calculation and design of structures of all types. High accuracy in determining mechanical characteristics plays a huge role at every stage of project development. Triaxial compression units are one of the most popular and widely used devices for laboratory research, as this type of testing allows you to reproduce the stress-strain state of the soil mass and determine its mechanical characteristics most accurately.Materials and methods. Experimental studies were performed on clay soil specimens (sandy loam, loam, clay) in a triaxial compression device in a consolidated-drained mode in order to study the effect of the coefficient of non-uniformity of expansion of the soil specimen on its mechanical properties.Results. Analyzing the data of experimental studies, it was found that the coefficient of non-uniformity of expansion of specimen b has a significant effect on the obtained values of the mechanical characteristics of clay soil, namely: the values of the angle of internal friction in the medium increased by 5 %; the values of specific adhesion increased by 4.4 % on average. However, it should be noted that despite the increase in the strength characteristics of the tested soil specimens, the exclusion of the coefficient b from the treatment process led to a decrease in the values of the secant deformation modulus at 50 % strength E50 by an average of 4.5 %.Conclusions. The obtained overestimated values of strength characteristics φ, c and underestimated values of deformation characteristics E50 are not critical, however, to increase the accuracy of calculations performed based on the results obtained as a result of in-house processing of laboratory test specimens, the coefficient of uneven expansion b of the specimen should be taken into account.https://www.vestnikmgsu.ru/jour/article/view/376laboratory teststriaxial compressionclay soilstrength characteristicsdeformation characteristicscoefficient of non-uniformity of expansion of the soil specimen under triaxial compression |
| spellingShingle | A. Z. Ter-Martirosyan G. O. Angelo L. Yu. Ermoshina I. A. Bokov Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics Vestnik MGSU laboratory tests triaxial compression clay soil strength characteristics deformation characteristics coefficient of non-uniformity of expansion of the soil specimen under triaxial compression |
| title | Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics |
| title_full | Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics |
| title_fullStr | Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics |
| title_full_unstemmed | Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics |
| title_short | Influence of the coefficient of non-uniformity of expansion of clay soil specimen on mechanical characteristics |
| title_sort | influence of the coefficient of non uniformity of expansion of clay soil specimen on mechanical characteristics |
| topic | laboratory tests triaxial compression clay soil strength characteristics deformation characteristics coefficient of non-uniformity of expansion of the soil specimen under triaxial compression |
| url | https://www.vestnikmgsu.ru/jour/article/view/376 |
| work_keys_str_mv | AT aztermartirosyan influenceofthecoefficientofnonuniformityofexpansionofclaysoilspecimenonmechanicalcharacteristics AT goangelo influenceofthecoefficientofnonuniformityofexpansionofclaysoilspecimenonmechanicalcharacteristics AT lyuermoshina influenceofthecoefficientofnonuniformityofexpansionofclaysoilspecimenonmechanicalcharacteristics AT iabokov influenceofthecoefficientofnonuniformityofexpansionofclaysoilspecimenonmechanicalcharacteristics |