Influence of the aggregate on the electrical conductivity of Portland cement concretes

Princigallo, Antonio; Breugel, K. van; Levita, G.

doi:10.1016/s0008-8846(03)00166-2

Cited by 76 publications

(27 citation statements)

References 16 publications

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“…Obviously use of sand decreased the pH, and increased the leaching. Several researchers (Tasong et al, 1998;Zampini and Shah, 1998;Princigallo et al, 2003) reported that the region around the aggregate particles influences the overall behavior of the concrete. The migration of mobile ions such as Ca 2+ , Al 3+ , and SO 4 2À through this region, which has higher porosity than cement paste, promotes heterogeneous nucleation and growth of calcium hydroxide (Tasong et al, 1998).…”

Section: Toxicity Characteristic Leaching Proceduresmentioning

confidence: 99%

Properties of steel foundry electric arc furnace dust solidified/stabilized with Portland cement

Salihoğlu

Pınarlı

Salihoğlu

et al. 2007

Journal of Environmental Management

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Section: Toxicity Characteristic Leaching Proceduresmentioning

confidence: 99%

Properties of steel foundry electric arc furnace dust solidified/stabilized with Portland cement

Salihoğlu

Pınarlı

Salihoğlu

et al. 2007

Journal of Environmental Management

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“…The net effect of aggregate inclusion is a compromise between two antagonist effects: dilution and interface formation. Both factors are connected with the relative volume of aggregate included and therefore this is the parameter that defines the influence on the concrete resistivity [12]. The dilution effect on the conductive matrix can be observed experimentally [9].…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature and humidity on Portland cement mortar resistivity monitored with inner sensors

Zaccardi

Garcia

Huélamo

et al. 2009

Materials & Corrosion

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Concrete resistivity is directly related to relative humidity (RH) and is also affected by temperature. In this paper, a theoretical discussion about how these two factors affect resistivities of concrete and mortar is provided. Moreover, experimental results on sensorized mortar probes are presented and correlated to analytical models of temperature and humidity influences. All measurements were performed under controlled conditions. Temperature, RH, and resistivity were measured simultaneously in a particular zone of the probes. Temperature scanning was performed over short periods of time (approximately 1 h) and the probes were covered with waterproof paraffin each time for constant humidity content. This was feasible as all sensors were embedded. Water contents were ensured during the experiment by weighting the probes. Conclusions on the applicability of these techniques, their advantages, and limitations, and correlation to Archie and Arrhenius laws of the results are made.

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“…For instance, with respect to the long-term ponding test and the electrochemical acceleration test, the former is extremely time-consuming which does not meet practical requirements, while the latter appears to vary much among researchers (Sun et al 2011). In these concerns, some analytical and numerical methods were thus developed to predict the ionic diffusivity of cementitious composites, such as the Maxwell equation and the random walk algorithm, which proved to favor a lot in engineering practices (Princigallo et al 2003). Nevertheless, due to the fact that the ITZ is not a discrete phase within cementitious composites, some priori values have to be assumed for the diffusivity of ITZ either testing or empirical.…”

Section: Computer Modeling Of Ionic Diffusion In the Itzmentioning

confidence: 99%

Assessment of Structural Feature and Ionic Diffusivity of ITZ in Blended Cementitious Composites

Gao

Schutter

et al. 2016

ACT

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In this paper, we present a study about the assessment of structural feature and ionic diffusivity of interfacial transition zone (ITZ) in blended cementitious composites, which are made of Portland cement, blast furnace slag and limestone filler. In particular, three mortar series are examined with respect to varying replacement levels of supplementary cementitious materials (SCMs), curing age and water-to-binder (w/b) ratio. Based on the techniques of experimental measurement and numerical simulation, i.e., the backscattered electron (BSE) image analysis and the HYMOSTRUC model, the structural features of ITZ in designed mortars are elaborated in a quantitative manner. Thereafter, a lattice Boltzmann method based computer modeling of ionic diffusion in the ITZ is performed to predict the ionic diffusivity. Results indicate that the ITZ differs much from bulk paste, which is of significant importance in blended cementitious composites. The structural feature and the ionic diffusivity of ITZ are prominently affected by various casting factors, such as replacement levels of SCMs, curing age and w/b ratio.

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Influence of the aggregate on the electrical conductivity of Portland cement concretes

Cited by 76 publications

References 16 publications

Properties of steel foundry electric arc furnace dust solidified/stabilized with Portland cement

Properties of steel foundry electric arc furnace dust solidified/stabilized with Portland cement

Influence of temperature and humidity on Portland cement mortar resistivity monitored with inner sensors

Assessment of Structural Feature and Ionic Diffusivity of ITZ in Blended Cementitious Composites

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