Resistance heating using electrically conductive cements

S. Wang; S. Wen; D. D.L. Chung

doi:10.1680/adcr.2004.16.4.161

Resistance heating using electrically conductive cements

S. Wang
, S. Wen
, D. D.L. Chung

Department of Mechanical and Aerospace Engineering

University at Buffalo

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

Steel fibre (8 μm diameter, 0·72 vol.%)-reinforced cement was found to be effective for resistance heating. A DC electrical power input of 5·6W (7·1 V, 0·79 A) resulted in a maximum temperature of 60°C (initial temperature = 19°C) and a time of 6 min to reach half the maximum temperature. Efficiency of energy conversion increased with time of heating, reaching 100% after 50 min. The heat power output per unit area was 750 W/m² for steel fibre cement, compared with 340 W/m² for a metal wire with the same resistance. The use of carbon fibres or graphite particles in place of steel fibres resulted in less effective heating, due to the higher resistivity.

Original language	English
Pages (from-to)	161-166
Number of pages	6
Journal	Advances in Cement Research
Volume	16
Issue number	4
DOIs	https://doi.org/10.1680/adcr.2004.16.4.161
State	Published - Oct 2004

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10.1680/adcr.2004.16.4.161

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title = "Resistance heating using electrically conductive cements",

abstract = "Steel fibre (8 μm diameter, 0·72 vol.\%)-reinforced cement was found to be effective for resistance heating. A DC electrical power input of 5·6W (7·1 V, 0·79 A) resulted in a maximum temperature of 60°C (initial temperature = 19°C) and a time of 6 min to reach half the maximum temperature. Efficiency of energy conversion increased with time of heating, reaching 100\% after 50 min. The heat power output per unit area was 750 W/m2 for steel fibre cement, compared with 340 W/m2 for a metal wire with the same resistance. The use of carbon fibres or graphite particles in place of steel fibres resulted in less effective heating, due to the higher resistivity.",

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AU - Wang, S.

AU - Wen, S.

AU - Chung, D. D.L.

PY - 2004/10

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N2 - Steel fibre (8 μm diameter, 0·72 vol.%)-reinforced cement was found to be effective for resistance heating. A DC electrical power input of 5·6W (7·1 V, 0·79 A) resulted in a maximum temperature of 60°C (initial temperature = 19°C) and a time of 6 min to reach half the maximum temperature. Efficiency of energy conversion increased with time of heating, reaching 100% after 50 min. The heat power output per unit area was 750 W/m2 for steel fibre cement, compared with 340 W/m2 for a metal wire with the same resistance. The use of carbon fibres or graphite particles in place of steel fibres resulted in less effective heating, due to the higher resistivity.

AB - Steel fibre (8 μm diameter, 0·72 vol.%)-reinforced cement was found to be effective for resistance heating. A DC electrical power input of 5·6W (7·1 V, 0·79 A) resulted in a maximum temperature of 60°C (initial temperature = 19°C) and a time of 6 min to reach half the maximum temperature. Efficiency of energy conversion increased with time of heating, reaching 100% after 50 min. The heat power output per unit area was 750 W/m2 for steel fibre cement, compared with 340 W/m2 for a metal wire with the same resistance. The use of carbon fibres or graphite particles in place of steel fibres resulted in less effective heating, due to the higher resistivity.

UR - https://www.scopus.com/pages/publications/6044258008

U2 - 10.1680/adcr.2004.16.4.161

DO - 10.1680/adcr.2004.16.4.161

M3 - Article

SN - 0951-7197

VL - 16

SP - 161

EP - 166

JO - Advances in Cement Research

JF - Advances in Cement Research

IS - 4

ER -

Resistance heating using electrically conductive cements

Abstract

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