Open AccessImpact of loading rate increase on stress-related properties of concrete
Author(s) -
Konstantin Tsvetkov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1425/1/012204
Subject(s) - structural engineering , strain rate , compression (physics) , bending , dynamic loading , materials science , stress (linguistics) , test data , joint (building) , stress–strain curve , properties of concrete , composite material , computer science , deformation (meteorology) , engineering , compressive strength , linguistics , philosophy , programming language
Concrete and reinforced concrete structures of buildings and facilities can be exposed to dynamic loading in which case various kinds of stressed states may occur. To make up the design models of these structures, it is necessary to know the characteristic features of changes in the stress-related properties of concrete, taking account of the joint impact of stressed states and increased loading rates. Several researchers have obtained the data about the impact of the loading rate on the stress-related properties of concrete, mainly for uniaxial compression and under bending [1]-[10], whereas the goal set in this paper is to analyze the loading rate under biaxial compression in which one of the main stresses is generated by static loading and the other by dynamic loading. The study was carried out by experimental research methods. The test results are presented as load-strain charts, plots of changes in strain modules and transverse and dilatational strains. According to the investigation results, the kind of charts is heavily influenced by the kind of stressed state and the loading rate. The analysis of the test data allows making suppositions about the physics of the impact of the loading rate on the peculiar features of concrete strain.