Dielectric properties of cement mortar as a function of water content

Summary, in English

We have studied the dielectric properties of cement mortars, with water/cement ratios between 0.5 and 0.78, in the frequency range 10−3≤f≤107 Hz. The dielectric response can be modeled by an equivalent circuit incorporating electrode polarization and bulk conduction. The bulk dc conductance and the amplitude of a constant phase element describing the dispersive part of the bulk response display characteristic dependencies on the water content of the samples. The power-law exponent of the constant phase element is independent of water content and can be related to the fractal dimension of the pore surfaces

• Författare: A. Berg; G.A. Niklasson; K. Brantervik; B. Hedberg; Lars-Olof Nilsson
• Publiceringsår: 1992
• Språk: Engelska
• Sidor: 93-96
• Publikation/Tidskrift/Serie: Applied Physics Reviews
• Volym: 71
• Issue: 12
• Länkar: http://dx.doi.org/10.1063/1.350488
• Dokumenttyp: Artikel i tidskrift
• Förlag: American Institute of Physics (AIP)
• Ämne: Materials Engineering
• Nyckelord: RESPONSE FUNCTIONS; ELECTRIC CONDUCTIVITY; FRACTALS; MORTARS; EQUIVALENT CIRCUITS; DIELECTRIC PROPERTIES; WATER; CEMENTS
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1931-9401