Prediction of interface conductivity of cement slurry during early hydration considering the effect of curing temperature and pressure

Ridha, Syahrir; Irawan, Sonny; Ariwahjoedi, Bambang

doi:10.1109/isiea.2011.6108679

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Water, on the other hand, provides the main conductive pathways through which electron travels [7,8]. As more water is evaporated, the number of conductive pathways available in the specimen decreases, which increases the resistance in response [9]. However, as the water/cement ratio was kept constant at 0.5, the cement samples with 15 wt% biochar showed a slightly higher water loss, but lower overall resistance values.…”

Section: Resultsmentioning

confidence: 99%

Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures

Kamaluddin

Kurniawan

Bakar

et al. 2020

KEM

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Smart and resilient concrete structures will require building materials such as cements that sense flaws. One mechanism of crack detection in structures is monitoring their electrical conduction. Two mechanisms of charge in cement is ionic movement and moisture diffusion. Carbon rich electrically-conducting char is produced by pyrolyzing rice husks and can be used to enhance electrical conduction in cement. This paper studies the evolution of electrical properties in ordinary Portland cement added with up to 15 wt% rice husk-derived biochar. Resistance of cements decreased with increasing biochar addition while moisture loss and resistance both increase as curing time increases. Cement with 15 wt% biochar experiences the largest moisture loss and the most conducting. This suggest charge transport along percolation paths of biochar particles is dominant mechanism in these materials. Electron microscopy and energy dispersive spectroscopic studies reveal formation of Ettringite phase and good wetting/bonding at the interface of biochar particles and cement.

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Section: Resultsmentioning

confidence: 99%

Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures

Kamaluddin

Kurniawan

Bakar

et al. 2020

KEM

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“…The relative permittivity and conductivity of the ground surface are 1.7 and 0.01S/m, respectively, which are assigned to each mesh facet as material parameters. The electromagnetic properties of the ground are set up according to those of cement [32], [33].…”

Section: A the Simulation System Parametersmentioning

confidence: 99%

Scattering Mechanism Analysis of Man-Made Targets via Polarimetric SAR Observation Simulation

Zhang

Chen

Wang³

et al. 2022

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Scattering mechanism analysis of a man-made target is critical for polarimetric synthetic aperture radar (PolSAR) image feature extraction and image interpretation. The most straightforward method for scattering mechanism investigation of man-made target is to analyze a huge amount of measured data under various conditions. However, the acquirement of measured data is extremely expensive and time consuming, coupled with its poor reusability, which makes the investigation inefficient and costly. The electromagnetic (EM) simulation is an effective and convenient way to obtain PolSAR data by solving equations describing the EM scattering from target of interest. It is adaptable to any observation condition, targets or environments, which have become a powerful tool commonly used for the study of EM scattering mechanism of target. In this paper, an efficient simulation framework for the emulation of PolSAR operation and imaging is proposed. This framework is based on ray tracing integrated with geometrical optics (GO), physical optics (PO) and Kirchhoff approximation (KA). The simulated image of a family car is in good agreement with the measured data of MiniSAR platform. Besides, images of T-72 tank under various observation conditions, radar parameters and terrains are simulated. Freeman decomposition is employed and scattering component percentages of target under different conditions are presented to analyze the scattering mechanism in detail.  Index Terms-Man-made targets, ray tracing, PolSAR image simulation, scattering mechanism > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < Lamei Zhang (M'07, SM'19) received the B.S., M.Sc., and Ph.D. degrees in information and communication engineering from the

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Microstructure parameter estimation in permeability calculation of well cement during early hydration by a simple particle expansion model

Ridha

Irawan

Ariwahjoedi

2011

2011 National Postgraduate Conference

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Prediction of interface conductivity of cement slurry during early hydration considering the effect of curing temperature and pressure

Cited by 3 publications

References 15 publications

Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures

Biochar as a Conducting Filler to Enhance Electrical Conduction Monitoring for Concrete Structures

Scattering Mechanism Analysis of Man-Made Targets via Polarimetric SAR Observation Simulation

Microstructure parameter estimation in permeability calculation of well cement during early hydration by a simple particle expansion model

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