Evaluation of the influence of creep and shrinkage determinants on column shortening in mid-rise buildings

Bahadori-Jahromi, Ali, Rotimi, Abdulazeez, Tovi, Shivan, Goodchild, Charles and Rizzuto, Joseph (2017) Evaluation of the influence of creep and shrinkage determinants on column shortening in mid-rise buildings. Advances in Concrete Construction, 5 (2). pp. 155-171. ISSN 2287-5301

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Abstract

The phenomenon of concrete column shortening has been widely acknowledged since it first became apparent in the 1960s. Axial column shortening is due to the combined effect of elastic and inelastic deformations, shrinkage and creep.
This study aims to investigate the effects of ambient temperature, relative humidity, cement hardening speed and aggregate type on concrete column shortening. The investigation was conducted using a column shortening prediction model which is underpinned by the Eurocode 2.
Critical analysis and evaluation of the results showed that the concrete aggregate types used in the concrete have significant impact on column shortening. Generally, aggregates with higher moduli of elasticity hold the best results in terms of shortening. Cement type used is another significant factor, as using slow hardening cement gives better results compared to rapid hardening cement. This study also showed that environmental factors, namely, ambient temperature and relative humidity have less impact on column shortening.

Item Type: Article
Uncontrolled Keywords: concrete; creep and shrinkage; mid-rise buildings; column shortening
Subjects: Construction and engineering > Civil and environmental engineering
Construction and engineering > Built environment
Construction and engineering > Civil and structural engineering
Depositing User: ALI BAHADORI-JAHROMI
Date Deposited: 18 May 2017 05:36
Last Modified: 18 May 2017 08:42
URI: http://repository.uwl.ac.uk/id/eprint/3330

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