Main Article Content
The effect of "compression error" - the effect of crumpling samples of dusty clay soils in compression tests - has been investigated experimentally.
For this purpose, compression tests of sands and loams were carried out on a special compression device with a ring area A = 360 cm2 and a height hk = 7 cm.
The second difference of this device is the presence in the upper stamp of holes with a diameter of up to 5 mm for the installation of screw marks, which were placed in clay soil samples at a distance of up to 5 mm from the contact surface between the stamp and the soil.
The modulus of deformation is the main deformation mechanical characteristic of the soil. It is known from practice that more reliable values of this characteristic can be obtained by testing soil bases with stamps in the field. However, when designing the foundations of shallow foundation, as a rule, apply odometric tests of soils in the laboratory on standard compression devices with a ring area of 60 cm2 and a height of hk = 25 mm by the method of 2 curves . To obtain the calculated values, the compression modules are corrected using transient coefficients [7, 4].
And most importantly, when determining the values of odometric laboratory modules, using standard compression devices, the result is affected by the "compression error". That is, the initial data for the calculated modules of deformation of the engineering-geological elements of the base can be significantly underestimated, which has been confirmed many times by complex pair (stamp-odometer) studies of soils under compression.
Studies of soil compression in compression conditions, conducted in the laboratory of foundations and foundations of KNUBA  prove the possibility of improving the results of odometric tests of soils for compression, bringing them closer to the strain.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors are published in this journal, agree to the following conditions:
Authors reserve the right to authorship of their work and transfer the journal the right of the first publication of this work under the terms of the Creative Commons Attribution License, which allows other persons to freely distribute published work with mandatory reference to authors original work and the first publication of work in this journal.
The authors have the right to enter into independent additional agreements on the non-exclusive dissemination of the work in the form in which it was published by this journal (for example, to post work in the electronic repository of the institution or to publish as part of a monograph), provided that the reference to the first publication of the work in this journal is maintained.
The journal's policy allows and encourages the authors to place the manuscript of the work on the Internet (for example, in the institutions' storehouses or on personal websites), both for presenting this manuscript to the editorial office and during its editorial processing, as this contributes to the creation of productive scientific discussion and positively affects the efficiency and dynamics of citing the published work (see The Effect of Open Access).
Osnovy ta fundamenty sporud. DBN V.2.1.-10-2009-Kyiv: DP «Ukrarkhbudinform», 2009.-110 (in Ukrainian).
Pyatkov A.V. (1987). Dissertatsiya. Ratsional'nyye fundamenty sel'skikh zdaniy i sooruzheniy na lessovykh prosadochnykh gruntakh [Rational foundations of rural buildings and structures on loess subsidence soils]. Kyіv: 181 (in Russian).
Larionov A.K., Kislova L.V. (1963). K voprosu ob izuchenii oshibok pri kompressionnykh ispytaniyakh gruntov na szhatiye. Stroitel'stvo sooruzheniy na lessovykh porodakh [On the study of errors in compression tests of soils for compres-sion. Construction of structures on loess rocks]. Voronezh: VISI. (in Russian).
Metodychni rekomendatsiyi (2017). Pidvyshchennya tochnosti vyznachennya moduliv deformatsiyi hruntiv osnov budivelʹ i sporud [Improving the accuracy of deter-mining the modules of soil deformation of the foundations of buildings and structures]. DP «NDIBK» Kyiv: 21 (in Ukrainian).
Osoblyvosti vyznachennya deformatsiy hlynystykh hruntiv v umovakh kom-presiynoho stysku [Features of determination of deformations of clay soils in the condi-tions of compression compression]. Pratsi 2 Mizhnarodnoyi konferentsiyi «Problemy he-otekhniky» Kyiv: KNUBA, 2017, 138-139 (in Ukrainian).
Hrunty. Metody laboratornoho vyznachennya kharakterystyk mitsnosti i de-formatyvnosti [Soils. Methods of laboratory determination of strength and deformability characteristics]. DSTU B.V.2.1-4-96. Kyiv: DP «Ukrarkhbudinform» 1996, 102 (in Ukrainian).
Posobiye po proyektirovaniyu osnovaniy zdaniy i sooruzheniy (k SNiP 2.02.01-83) NIIOSP im.Gersevanova. Moscow: stoyizdat, 1986, 415 (in Russian).