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Study of the Admixtures Effect on Concrete Creep Using Bayesian Linear Regression

Authors
  • Zgheib, E.
  • Raphael, W.
Type
Published Article
Journal
Archives of Civil Engineering
Publisher
Sciendo
Publication Date
Sep 01, 2019
Volume
65
Issue
3
Pages
127–140
Identifiers
DOI: 10.2478/ace-2019-0039
Source
De Gruyter
Keywords
License
Green

Abstract

Admixtures are commonly used nowadays in the mix composition of concrete. These additions affect concrete properties and performance especially creep deformations. This paper shows the effect of admixtures on creep of concrete. In fact, creep deformations have prejudicial consequences on concrete behaviour; an incorrect or inaccurate prediction leads to undesirable consequences in structures. Therefore, an accurate estimation of these deformations is mandatory. Moreover, design codes do not consider admixtures’ effect while predicting creep deformations, thus it is necessary to develop models that predict accurately creep deformations and consider the effect of admixtures. Using a large experimental database coming from international laboratories and research centres, this study aims to update the Eurocode 2 creep model by considering the type and percentage of admixtures using Bayesian Linear Regression method. The effect of two types of admixtures is presented in this paper; the water reducer and silica fume.

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