Determination of chloride diffusion coefficient and gas permeability of concrete and their relationship

Sugiyama, Takafumi; Bremner, T. W.; Tsuji, Yukikazu

doi:10.1016/s0008-8846(96)85015-0

Cited by 51 publications

(26 citation statements)

References 4 publications

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“…Fairly good correlation is found between diffusion coefficient and air permeability for all cement types. According to Sugiyama et al (1996), correlation exists in the range where water cement ratio significantly effects air permeability. As in Fig.…”

Section: Chloride Penetration and Air Permeabilitymentioning

confidence: 99%

“…The results of air permeability depend on degree of saturation of specimen under test and how it is dried (Sugiyama et al 1996). Hence, estimation of D e by air permeability for laboratory prepared concrete and actual structure exposed to marine conditions is possible by considering the effect of water content ratio.…”

Section: Exposed Concrete To Actual Marine Conditionsmentioning

confidence: 99%

“…Hence air permeability and water permeability can be indicators for the magnitude of penetration of carbon dioxide or chloride ion. Air permeability is said to be highly correlated with porosity and pore size distribution of concrete and can be used as a measure of porosity and pore connectivity (Halamickova et al 1995;Sugiyama et al 1996;Abbas et al 1999). Air permeability coefficient has high correlation with neutralization progress, water cement ratio, cement type and curing conditions (Basheer et al 2001;Hui-sheng et al 2009;Hamami et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Durability Assessment of Blended Concrete by Air Permeability

Katpady

Hazehara

Soeda

et al. 2018

Int J Concr Struct Mater

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Assessment of concrete cover quality is necessary for proper maintenance of concrete structures. Concrete durability is evaluated primarily based on chloride penetrability, neutralization and other external factors. The present study attempts to analyze concrete quality and its mass transfer resistance performance by measuring the air permeability and its relation with concrete durability indicators like chloride diffusion and neutralization. The applicability of air permeability as a durability indicator is validated using concrete with different materials, parameters and curing conditions. The tests are conducted on laboratory prepared concrete as well as for concrete exposed to actual marine conditions. From the experimental results, it is found that air permeability coefficient, neutralization coefficient and chloride ion diffusion coefficient have high correlation. It is suggested that air permeability could be considered as an alternative to estimate mass transfer resistance of concrete and as a concrete durability indicator.

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Section: Chloride Penetration and Air Permeabilitymentioning

confidence: 99%

Section: Exposed Concrete To Actual Marine Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Durability Assessment of Blended Concrete by Air Permeability

Katpady

Hazehara

Soeda

et al. 2018

Int J Concr Struct Mater

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“…by Sugiyama et al (1996b) or Fauchet (1991) based on plastic strains. As mentioned earlier, a theoretical background for the correlation between damage and permeability in the diffuse regime exists (Chatzigeorgiou et al, 2005).…”

Section: Influence Of Damage On Permeabilitymentioning

confidence: 99%

Hydraulic behaviour of a representative structural volume for containment buildings

Jason

Pijaudier‐Cabot

Ghavamian

et al. 2007

Nuclear Engineering and Design

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For particular structures like containment buildings of nuclear power plants, the study of the hydraulic behaviour is of great concern. These structures are indeed the third barrier used to protect the environment in case of accidents. The evolution of the leaking rate through the porous medium is closely related to the changes in the permeability during the ageing process of the structure. It is thus essential to know the relation between concrete degradation and the transfer property when the consequences of a mechanical loading on the hydraulic behaviour have to be evaluated. A chained approach is designed for this purpose. The mechanical behaviour is described by an elastic plastic damage formulation, where damage is responsible for the softening evolution while plasticity accounts for the development of irreversible strains. The drying process is evaluated according to a non-linear equation of diffusion. From the knowledge of the damage and the degree of saturation, a relation is proposed to calculate the permeability of concrete. Finally, the non-homogeneous distribution of the hydraulic conductivity is included in the hydraulic problem which is in fact the association of the mass balance equation for gas phase and Darcy law. From this methodology, it is shown how an indicator for the hydraulic flows can be deduced.

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“…The durability of concrete is directly affected by its performance in aggressive environments or indirectly by the shape of its porous structure and, consequently, its permeability. Permeability of concrete is believed to be the major index for durability, as it governs the transport of liquid and gaseous phases into concrete and affects durability properties such as carbonation, sulfate attack, and alkali-aggregate reaction [1,2].…”

Section: Introductionmentioning

confidence: 99%

Durability of mortar and concretes containing slag with low hydraulic activity

Hadjsadok

Kenaï

Courard

et al. 2012

Cement and Concrete Composites

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a b s t r a c tGranulated blast furnace slag has been widely used as a partial substitute for Portland cement in many applications because of advantages which include cost reduction, reduction in heat evolution and improvement of durability properties. However, the effectiveness of slag depends on its hydraulic reactivity. In this paper, the results of an experimental study on the effect of slag with low hydraulicity on the mechanical and durability properties of concrete and the performance of mortar under sulfate attack are discussed. Special attention is given to gas permeability and water absorption of slag concrete. The durability of slag concrete is improved at long term at low Water/Binder ratio. Sulfate resistance of mortar is improved by slag replacement up to 30%.

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Determination of chloride diffusion coefficient and gas permeability of concrete and their relationship

Cited by 51 publications

References 4 publications

Durability Assessment of Blended Concrete by Air Permeability

Durability Assessment of Blended Concrete by Air Permeability

Hydraulic behaviour of a representative structural volume for containment buildings

Durability of mortar and concretes containing slag with low hydraulic activity

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