Journal of Materials and Engineering Structures
Volume 6, Numéro 2, Pages 269-278
2019-06-30
Experimental Study Of The Long-term Shortening Of Reinforced Concrete Columns Under Maintaining Concentric Axial Load
Authors : Tran Ngoc Long . Tran The Truyen . Nguyen Manh Hung . Truong Van Quyet .
Abstract
This paper presents the results of an experimental study to measure the shortening of reinforced concrete (RC) columns under long-term maintaining concentric axial load. Long-term axial deformation due to shrinkage and creep of the concrete were recorded beside deformation due to mechanical load. Eight RC cylinder - columns (content of reinforcement 1.5% and 2%) with diameter of 150 mm and height of 600 mm were tested during the period of 600 days to determine their shortening. The experimental results showed that the long-term deformation of RC columns occurs primarily during the first year of loading. The deformation creep of concrete is much greater than the shrinkage deformation. The reinforcement content has a significant effect on the long-term deformation of concrete columns.
Keywords
Reinforced concrete columns; Deformation; Shrinkage; Creep
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