Early age cracking risk in a massive concrete foundation slab: Comparison of analytical and numerical prediction models with on-site measurements

Smolana, Aneta; Klemczak, Barbara; Azenha, Miguel; Schlicke, Dirk

doi:10.1016/j.conbuildmat.2021.124135

Cited by 27 publications

(19 citation statements)

References 26 publications

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“…The validation of the FE model of the structure has been already included in previous studies [ 32 , 33 , 34 , 44 ]. However, for the completeness of the considerations presented in this article, the compact results of the validation are depicted in Figure 12 .…”

Section: Resultsmentioning

confidence: 99%

“…Later, the convergence becomes worse. In [ 32 , 34 ], it was explained by cracking occurring in an area close to the stressmeter’s location and affecting both the functionality of this sensor and the stress distribution in its surrounding. Nevertheless, the good coincidence in the first few days of concrete curing, as well as the correct stress inversion in the cooling phase, may be considered as a reliable FE simulation of all stresses.…”

Section: Resultsmentioning

confidence: 99%

“…The cracks include the elements of the top and lateral surfaces of the slab with their widths reaching 0.01 mm. More details with the patterns of cracking are given in [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…The considered slab has a thickness of 2 m and dimensions of 26.5 × 41.5 m in a plan view. These dimensions, especially the thickness of the slab, are the reason for its consideration as a massive structure [ 31 , 32 ] with a significant rise in the concrete temperature caused by the cement hydration. In such structures, close-to-adiabatic conditions are observed in the core while the external surfaces are colder due to the heat transfer to the environment.…”

Section: Case Study Descriptionmentioning

confidence: 99%

“…For reinforcement, an elastic-perfectly plastic model is applied. More details connected with the applied crack-based model are given in [ 32 , 33 , 40 ].…”

Section: Computational Modelmentioning

confidence: 99%

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Thermo-Mechanical Analysis of Mass Concrete Foundation Slabs at Early Age—Essential Aspects and Experiences from the FE Modelling

et al. 2022

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In this paper, the focus is placed on essential aspects of finite element modelling of thermo-mechanical behaviour of massive foundation slabs at early ages. Basic decision-making issues are discussed in this work: the potential need to explicitly consider the casting process in the modelling, the necessary size of the underlying soil to be modelled and the size of the FE mesh, and the need of considering daily changes of the environmental temperature and the temperature distribution over the depth of the soil. Next, the contribution of shrinkage to early age stresses, the role of the reinforcement, and the type of mechanical model are investigated. Comparative analyses aiming to investigate the most important aspects of the FE model and some possible simplifications with negligible effect on the results are made on the example of a massive foundation slab. Finally, the results are summarized with recommendations for creating the FE models of massive slabs at early ages.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The cracks include the elements of the top and lateral surfaces of the slab with their widths reaching 0.01 mm. More details with the patterns of cracking are given in [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

Section: Case Study Descriptionmentioning

confidence: 99%

“…For reinforcement, an elastic-perfectly plastic model is applied. More details connected with the applied crack-based model are given in [ 32 , 33 , 40 ].…”

Section: Computational Modelmentioning

confidence: 99%

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