ELECTRICAL CONDUCTIVE BEHAVIOUR OF CEMENTITIOUS COMPOSITES WITH LOW CONTENT OF HYBRID STEEL-CARBON FIBRE SYSTEMS
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition1998年第1期
论文作者：水中和
文章页码：18 - 23
摘 要：<正>Electrical impedance measurements wereperformed on fine-grained concrete with low,volume con-tent of conductive steel and carbon fibres,either as a monoor as a hybrid system.The influences were investhated ofthe applied frequencies,of fibre combinations and of theage of the composites on the impedance.the results showthat when the applied frequency is increased from 0. 98Hzto 1000Hz,the impedance of the fibre composites significantly decreases.At the same time,impedance differencebetween plain concrete and fibre-reinforced concrete is en-hanced.Dramatic drop of impedance takes phace over thelow,frequency range,i.e.0. 98～31Hz.Impedance alsodepends on the volume content of hybrid fibres.The cemen-titous composite with the highest content of hybrid fibres（1. 0% steel fibres and 0. 2% carbon firbres by volume）has the lowest impedance at all measuring frequencics.0.6% fribres by volume seem to be a turming point,fromwhich the variation of impedance slows down with the fibre content increases.On the other han
水中和
摘 要：<正>Electrical impedance measurements wereperformed on fine-grained concrete with low,volume con-tent of conductive steel and carbon fibres,either as a monoor as a hybrid system.The influences were investhated ofthe applied frequencies,of fibre combinations and of theage of the composites on the impedance.the results showthat when the applied frequency is increased from 0. 98Hzto 1000Hz,the impedance of the fibre composites significantly decreases.At the same time,impedance differencebetween plain concrete and fibre-reinforced concrete is en-hanced.Dramatic drop of impedance takes phace over thelow,frequency range,i.e.0. 98～31Hz.Impedance alsodepends on the volume content of hybrid fibres.The cemen-titous composite with the highest content of hybrid fibres（1. 0% steel fibres and 0. 2% carbon firbres by volume）has the lowest impedance at all measuring frequencics.0.6% fribres by volume seem to be a turming point,fromwhich the variation of impedance slows down with the fibre content increases.On the other han
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