Open AccessULTIMATE ELONGATION OF CONCRETE
Author(s) -
Поліна Курган,
S. P Kurgan
Publication year - 2017
Publication title -
zbìrnik naukovih pracʹ. serìâ: galuzeve mašinobuduvannâ, budìvnictvo
Language(s) - English
Resource type - Journals
eISSN - 2518-1106
pISSN - 2409-9074
DOI - 10.26906/znp.2017.48.779
Subject(s) - deformation (meteorology) , tension (geology) , elongation , homogeneous , stress (linguistics) , materials science , structural engineering , fracture (geology) , constant (computer programming) , ultimate tensile strength , mechanics , composite material , computer science , physics , engineering , statistical physics , linguistics , philosophy , programming language
It is shown the results of experimental studies of the deformation and concrete fracture process under the axial tension and under the conditions of non-homogeneous state of stress when changing the deformation gradient over the cross section. The test samples were loaded by the short duration load to the point of structural and with load alleviation under the stresses close to destruction. The basic influencing factors on the ultimate elongation of studied types of concrete are found out and the analytical dependences for their description are proposed. The experiments have shown that under the non-uniform stress state the ultimate elongation is not constant; it varies within a wide range and depends on the critical strain gradient. For solving applied problems, the suitable, for practical use, universal form of connection load – deformation was offered, which truly reflects the unity of the relation between stress and deformation of concrete, which is in the condition of homogeneous and non-homogeneous stress states.