Role of pore pressure on cracking and mechanical performance of concrete subjected to drying

Soleilhet, François; Benboudjema, Farid; Jourdain, Xavier; Gatuingt, Fabrice

doi:10.1016/j.cemconcomp.2020.103727

Cited by 10 publications

(3 citation statements)

References 65 publications

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“…Studies that discuss the development of physical properties by considering the moisture content as a condition in which the hydration of cement does not continue sufficiently are also not covered [40,44,45]. In addition, studies that are considered to have a large variation in moisture content inside the specimens are also omitted from the discussion because such experimental data do not show the material properties [46][47][48][49]. In this section, the author will focus on the experiments in which changes in physical properties due to drying of relatively well-cured specimens, especially those in which the moisture content inside the specimen is uniform.…”

Section: Concretementioning

confidence: 99%

Impact of drying on concrete and concrete structures

Maruyama

2022

RILEM Tech Lett

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This study reviews research showing changes in the performance of reinforced concrete structures and members caused by drying conditions, and aims to contribute to evaluating the structural safety in the long-term use of concrete. Additionally, to build a consensus on the changes in the physical properties of concrete materials after drying, the review focused on experiments intended to produce a uniform distribution of moisture-induced material property changes in the interior of the cross-section. There is generally no effect on the change in the maximum loading capacity of a structure when the design is based on the flexural performance of the components. However, in the case of structures dominated by members determined by the shear capacity of the components, the reduction of the maximum loading capacity can be a problem. The decrease in stiffness is largely due to the opening of shrinkage cracks and the reduction of the Young’s modulus of concrete after drying. The change in the compressive strength of concrete due to drying is governed by the specific strength change of hardened cement paste caused by the colloidal nature, but it is also affected by the shrinkage of the aggregate, which changes the damage in concrete under drying.

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Section: Concretementioning

confidence: 99%

Impact of drying on concrete and concrete structures

Maruyama

2022

RILEM Tech Lett

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“…Fig. 4 : Schematic representation of the shear wall extracted from [7] To model the ageing of the shear wall a previous model developed by the authors is used [8]. It is composed of 4 main stages: the modelling of the drying process with a diffusion equation including the capillary pressure as a driving potential "Eq.…”

Section: Shear Wall Under Dryingmentioning

confidence: 99%

Numerical Estimation of Crack Openings in Concrete Structures Under Multi-physic Loadings

et al. 2021

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…The hygro-mechanical behaviour of a cementitious material is a complex problem [23,24]. The hydric status (evolution of mass variation, desorption isotherm, hydric fields) is a difficult state to determine.…”

Section: Introductionmentioning

confidence: 99%

Effect of transient drying on mechanical properties of concrete specimens

Soleilhet

Benboudjema

Jourdain

et al. 2021

European Journal of Environmental and Civil Engineering

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Initially saturated, cementitious materials are subject to water movements that are responsible for multiple phenomena. Among them, there are drying shrinkage, creep, fluid transport, swelling reactions and cracking induced changes in mechanical properties. The main objective of this study is therefore to investigate the impact of drying on the behaviour of cementitious materials. For this we carried out two 70-day studies on the material EDF's VeRCoRs project. The studies consist of storing (after almost complete hydration) a batch of specimen under saturated conditions while the second batch is stored in controlled environments of 30 % and 45 % h r respectively. After the drying phase, specimens are tested by the mean of standard mechanical tests. The conclusions are heterogeneous. For instance, on different specimens that are not in water balance, the compressive strength is increased by a maximum of 12 % while the tensile strength determined by bending is more dependent on the type of tests. The elastic modulus decreases with desaturation. Finally, the energy dissipated by the cracking increases sharply with drying. These results show that the hygro-mechanical behaviour is complex, depending on the ambiant conditions and its duration, the geometry of the specimens and the type of tests. Thus, to take into account the hydric effects on mechanical behaviour, it is necessary to have a numerical modelling approach to take into account the different mechanisms involved. In this perspective, this work provides a significant database that offers the opportunity to test hygro-mechanical models. A necessary step in order to model structures.

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Role of pore pressure on cracking and mechanical performance of concrete subjected to drying

Cited by 10 publications

References 65 publications

Impact of drying on concrete and concrete structures

Impact of drying on concrete and concrete structures

Numerical Estimation of Crack Openings in Concrete Structures Under Multi-physic Loadings

Effect of transient drying on mechanical properties of concrete specimens

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