The Open Civil Engineering Journal




ISSN: 1874-1495 ― Volume 12, 2018
RESEARCH ARTICLE

Experimental Study on the Effect of Moisture Content on Hysteretic Behavior of Reinforced Concrete Columns



Wenjuan Lv, Baodong Liu*, Ming Li, Lin Li, Pengyuan Zhang
School of Civil Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, People’s Republic of China

Abstract

Background:

For reinforced concrete structures under different humid conditions, the mechanical properties of concrete are significantly affected by the moisture content, which may result in a great change of the functional performance and bearing capacity.

Objective:

This paper presents an experiment to investigate the influence of the moisture content on the dynamic characteristics and hysteretic behavior of reinforced concrete column.

Results:

The results show that the natural frequency of reinforced concrete columns increases quickly at an early stage of immersion, but there is little change when the columns are close to saturation; the difference between the natural frequencies before and after cyclic test grows as the moisture content rises. The damping ratio slightly decreases first and then increases with the increase of moisture content; the damping ratio after the cyclic test is larger than before the test due to the development of the micro-cracks.

Conclusion:

The trend of energy dissipation is on the rise with increasing moisture content, although at an early stage, it decreases slightly. According to the experimental result, a formula for the moisture content on the average energy dissipation of reinforced concrete columns is proposed.

Keywords: Concrete, Moisture content, Hysteretic behavior, Energy dissipation, Experimental, Reinforced concrete column.


Article Information


Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 47
Last Page: 61
Publisher Id: TOCIEJ-12-47
DOI: 10.2174/1874149501812010047

Article History:

Received Date: 20/11/2017
Revision Received Date: 01/02/2018
Acceptance Date: 12/02/2018
Electronic publication date: 30/03/2018
Collection year: 2018

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© 2018 Lv et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the School of Civil Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, People’s Republic of China; Tel: +8601051687252; Fax: +8601051687248; E-mail: baodongliu@vip.sina.com


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