Abstract
Enhanced Porosity Concrete (EPC) is manufactured by gap grading coarse aggregates to create interconnected porosity in the system. The porosity and physical features of the pore network are characterized in this paper using Electrical Impedance Spectroscopy (EIS). Porosity alone was found to be an inaccurate indicator of the electrical conductivity of the sample. While several studies have shown that a conventional form of Archie's law can describe porous systems, it was observed that Archie's law did not completely describe the electrical conductivity of the EPC system. Therefore, a modified version of Archie's law was used that incorporated the matrix conductivity, which described the system more accurately than the conventional form. The pore connectivity factor determined using EIS is found to be linearly related to the acoustic absorption of the material. Similarly, conductivity results determined from EIS were used with total porosity to compute the hydraulic connectivity factor. This factor was related to intrinsic permeability calculated from hydraulic conductivity (measured using a falling head permeameter). Based on these studies, it appears that a single electrical impedance test could provide information for the design, quality control/quality assurance, and utilization of EPC.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2074-2085 |
| Number of pages | 12 |
| Journal | Cement and Concrete Research |
| Volume | 36 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2006 |
| Externally published | Yes |
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Keywords
- Characterization (B)
- Electrical properties (C)
- Enhanced Porosity Concrete
- Permeability (C)
- Porosity
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Ceramics and Composites
Cite this
Characterizing Enhanced Porosity Concrete using electrical impedance to predict acoustic and hydraulic performance. / Neithalath, Narayanan; Weiss, Jason; Olek, Jan.
In: Cement and Concrete Research, Vol. 36, No. 11, 11.2006, p. 2074-2085.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Characterizing Enhanced Porosity Concrete using electrical impedance to predict acoustic and hydraulic performance
AU - Neithalath, Narayanan
AU - Weiss, Jason
AU - Olek, Jan
PY - 2006/11
Y1 - 2006/11
N2 - Enhanced Porosity Concrete (EPC) is manufactured by gap grading coarse aggregates to create interconnected porosity in the system. The porosity and physical features of the pore network are characterized in this paper using Electrical Impedance Spectroscopy (EIS). Porosity alone was found to be an inaccurate indicator of the electrical conductivity of the sample. While several studies have shown that a conventional form of Archie's law can describe porous systems, it was observed that Archie's law did not completely describe the electrical conductivity of the EPC system. Therefore, a modified version of Archie's law was used that incorporated the matrix conductivity, which described the system more accurately than the conventional form. The pore connectivity factor determined using EIS is found to be linearly related to the acoustic absorption of the material. Similarly, conductivity results determined from EIS were used with total porosity to compute the hydraulic connectivity factor. This factor was related to intrinsic permeability calculated from hydraulic conductivity (measured using a falling head permeameter). Based on these studies, it appears that a single electrical impedance test could provide information for the design, quality control/quality assurance, and utilization of EPC.
AB - Enhanced Porosity Concrete (EPC) is manufactured by gap grading coarse aggregates to create interconnected porosity in the system. The porosity and physical features of the pore network are characterized in this paper using Electrical Impedance Spectroscopy (EIS). Porosity alone was found to be an inaccurate indicator of the electrical conductivity of the sample. While several studies have shown that a conventional form of Archie's law can describe porous systems, it was observed that Archie's law did not completely describe the electrical conductivity of the EPC system. Therefore, a modified version of Archie's law was used that incorporated the matrix conductivity, which described the system more accurately than the conventional form. The pore connectivity factor determined using EIS is found to be linearly related to the acoustic absorption of the material. Similarly, conductivity results determined from EIS were used with total porosity to compute the hydraulic connectivity factor. This factor was related to intrinsic permeability calculated from hydraulic conductivity (measured using a falling head permeameter). Based on these studies, it appears that a single electrical impedance test could provide information for the design, quality control/quality assurance, and utilization of EPC.
KW - Characterization (B)
KW - Electrical properties (C)
KW - Enhanced Porosity Concrete
KW - Permeability (C)
KW - Porosity
UR - http://www.scopus.com/inward/record.url?scp=33750583740&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750583740&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2006.09.001
DO - 10.1016/j.cemconres.2006.09.001
M3 - Article
VL - 36
SP - 2074
EP - 2085
JO - Cement and Concrete Research
JF - Cement and Concrete Research
SN - 0008-8846
IS - 11
ER -