@Article{jrm.2020.09573,
AUTHOR = {Kang He, Yu Chen, Jian Wang},
TITLE = {Axial Mechanical Properties of Timber Columns Subjected to Freeze-Thaw Cycles},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {8},
PAGES = {969--992},
URL = {http://www.techscience.com/jrm/v8n8/39500},
ISSN = {2164-6341},
ABSTRACT = {The behaviour of timber columns subjected to freeze-thaw cycles under
axial compression is presented in this paper. A total of forty specimens, including
twenty circular timber columns and twenty square timber columns, were tested
under axial compression. The failure modes, ultimate bearing capacity, ductility
coefficient, load-displacement curves and load-strain curves were obtained and
analyzed. The number of freeze-thaw cycles (from 0 to 80) and the specimens’
height (from 225 mm to 360 mm) were considered as the main parameters. After
freeze-thaw cycles, there was no obvious change on the surface of the timber columns. The test results showed that freeze-thaw cycles could reduce the ultimate
bearing capacity of the timber columns, and the average reduction of the ultimate
bearing capacity of the specimen reached 28%. The ductility coefficient of the
square specimens subjected to freeze-thaw cycles almost remains constant compared with that of the square timber columns left untreated. While the ductility
coefficient of the circular timber columns increases after freeze-thaw cycles. In
addition, based on the extensive experimental analysis, a regression formula is
derived to predict the ultimate bearing capacity of the timber columns after being
subjected to freeze-thaw cycles, which is proved to be reasonable accurate.},
DOI = {10.32604/jrm.2020.09573}
}