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Effect of admixtures on the dielectric constant of cement paste
The relative dielectric constant of cement paste at 10 kHz-1 MHz is decreased by silica fume addition (from 29 to 21 at 10 kHz) and by steel fiber addition (from 29 to 20 at 10 kHz), due to the volume occupied by these admixtures in place of cement. It is increased by latex addition (from 29 to 35 at 10 kHz) and by carbon fiber addition (from 21 to 54 for silica fume cement at 10 kHz) due to the interface between cement and these admixtures. Increasing the carbon fiber content beyond the percolation threshold decreases the relative dielectric constant (from 54 to 49 at 10 kHz).
Effect of admixtures on the dielectric constant of cement paste
The relative dielectric constant of cement paste at 10 kHz-1 MHz is decreased by silica fume addition (from 29 to 21 at 10 kHz) and by steel fiber addition (from 29 to 20 at 10 kHz), due to the volume occupied by these admixtures in place of cement. It is increased by latex addition (from 29 to 35 at 10 kHz) and by carbon fiber addition (from 21 to 54 for silica fume cement at 10 kHz) due to the interface between cement and these admixtures. Increasing the carbon fiber content beyond the percolation threshold decreases the relative dielectric constant (from 54 to 49 at 10 kHz).
Effect of admixtures on the dielectric constant of cement paste
Wen, S. (author) / Chung, D.D.L. (author)
Cement and Concrete Research ; 31 ; 673-677
2001
5 Seiten, 28 Quellen
Article (Journal)
English
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