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Resistivity measurement of conductive asphalt concrete based on two-electrode method

Journal of Central South University 2013年第9期20卷 2599-2604页

作者：杨群李旭王屏 Key Laboratory of Road and Traffic Engineering of the Ministry of Education (Tongji University)

The objective of this work is to develop a novel methodology for determining real resistivity of conductive asphalt concrete based on two-electrode *** to an influence of contact resistance,the measured resistivity is always not equal to the real *** determine the real resistivity,a linear relationship of the measured resistivity,contact resistance and the real resistivity was *** experiments for six specimens with varying graphite contents were designed and performed to validate the *** of experiments demonstrate that the slope of the line represents contact resistance,and the intercept indicates the real *** effects of graphite content on contact resistance and real resistivity are also ***,results show that the influence of contact resistance on accuracy of resisitvity measurement becomes more serious if graphite content is beyond 3%.Hence,it is the time to choose this novel methodology to determine the real resistivity of asphalt concrete by taking account of contact resistance.

关键词： conductive asphalt concrete two-electrode method measured resistivity real resistivity contact resistance linear relationship

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Investigation on Fatigue Model of asphalt concrete Containing conductive Fillers

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武汉理工大学学报 2010年第17期32卷 62-66页

作者： LI W T WU S P ZHU Z H LIU Z F Key Laboratory of Silicate Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

The snow and ice on asphalt pavement are very dangerous to people,automobiles and airplanes,so melting snow and ice becomes a high profile. Investigation on the asphalt concrete containing conductive fillers has a great contribution to the researches of melting snow and ice. However,it is few to research on the fatigue behavior which is important in the profile. By four-point bending fatigue tests,the specific fatigue models of conductive asphalt concrete were developed. The parameters of three fatigue models were regressed,the three models predicted the fatigue behavior by the strain levels,the strain levels and initial mix stiffness and dissipated energy respectively. In the model of the strain levels,the fatigue life is decreased at the same strain level as the conductive filler is added. The model based on the strain levels and initial mix stiffness reveals that the fatigue life is partly affected by the initial mix stiffness which is influenced by the conductive filler. The model used the dissipated energy approach is adopted to predict the fatigue behavior with the introduction of the impact the conductive filler on the dissipated energy.

关键词： conductive asphalt concrete model fatigue life strain level stiffness dissipated energy

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An Improvement in Electrical Properties of asphalt concrete

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Journal of Wuhan University of Technology(Materials Science) 2002年第4期17卷 69-72页

作者：吴少鹏 Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education Wuhan University of Technology Wuhan China

Materials such as Koch AH-70,basalt aggregate,limestone powder and graphite particles were used to prepare conductive asphalt concrete,which is a new type of multifunctional *** mix proportion by weight was shown as *** aggregates (2.36-4.75 mm)∶fine aggregates (asphalt=120∶240∶14∶*** content of added graphite particles ranged from 0% to 20%(by the weight of asphalt concrete).A conductive asphalt concrete with a resistivity around 10-10 3Ω·m was *** attention was paid to the effects of graphite content,graphite physical-chemical properties,asphalt content and temperature on the ***,an attempt was made to develop an electrically conductive model for asphalt concrete.

关键词： conductive asphalt concrete electrical properties resistivity electrically conductive model

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