<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Bonded concrete overlays (BCO) on bridge decks are beneficial solutions due to their superior properties as compared to the typical asphalt pavement. A significant number of overlays suffer however, from occurrence of cracks and delamination due to poor bond, and restrained shrinkage and thermal dilation. Over the past years different appraisals for estimation of the restrained deformations have been developed, from micro-scale models, based on poromechanics, to empirical equations as given in B3 or B4 models suggested by Bažant. This paper provides a short overview of calculation models along with a brief theoretical explanation of shrinkage mechanism.</p></abstract>

Bonded concrete overlays (BCO) on bridge decks are beneficial solutions due to their superior properties as compared to the typical asphalt pavement. A significant number of overlays suffer however, from occurrence of cracks and delamination due to poor bond, and restrained shrinkage and thermal dilation. Over the past years different appraisals for estimation of the restrained deformations have been developed, from micro-scale models, based on poromechanics, to empirical equations as given in B3 or B4 models suggested by Bažant. This paper provides a short overview of calculation models along with a brief theoretical explanation of shrinkage mechanism.

Bonded Concrete Overlays: A Brief Discussion on Restrained Shrinkage Deformations and Their Prediction Models

Division of Building Materials and Structural Engineering

Division of Building Materials and Structural Engineering; Head of R&D department

Division Building Materials and Structural Engineering

Nordic Concrete Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Bonded concrete overlays (BCO) on bridge decks are beneficial solutions due to their superior properties as compared to the typical asphalt pavement. A...

Bonded Concrete Overlays: A Brief Discussion on Restrained Shrinkage Deformations and Their Prediction Models

Published Online: Dec 31, 2019

Page range: 107 - 129

Received: Oct 07, 2019

Accepted: Dec 19, 2019

DOI: https://doi.org/10.2478/ncr-2019-0019

Keywords
bridge, overlay, concrete, shrinkage, creep

© 2019 Wojciech Cyron et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Bonded Concrete Overlays: A Brief Discussion on Restrained Shrinkage Deformations and Their Prediction Models

Published Online: Dec 31, 2019

Page range: 107 - 129

Received: Oct 07, 2019

Accepted: Dec 19, 2019

DOI: https://doi.org/10.2478/ncr-2019-0019

Keywordsbridge, overlay, concrete, shrinkage, creep

© 2019 Wojciech Cyron et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
bridge, overlay, concrete, shrinkage, creep