Abstract Recently, unusual weather phenomena occur frequently due to the global warming. Particularly freezing pavement tends to increase the pedestrian, and traffic, accident rates every year. Snow or ice layers covering the roads will cause temporary or long-term traffic jams. Frequent occurre...
Abstract Recently, unusual weather phenomena occur frequently due to the global warming. Particularly freezing pavement tends to increase the pedestrian, and traffic, accident rates every year. Snow or ice layers covering the roads will cause temporary or long-term traffic jams. Frequent occurrence of accidents in the winter due to the freezing of the roads is attributed to insufficient friction between the slippery surfaces of the roads and the tires of the vehicles, while it causes inconveniences from traffic jams and accidents. In this respect, research and development is indispensible on the removal and melting of snow on freezing roads, and we can expect the effects of the prevention of social and economical losses, and the cost saving, will ensue out of this. These problems necessitate the spending of huge budget by the government for maintenance, so the development of an environment-friendly and efficient freezing-preventive pavement system is required to cope with the problems. In order to efficiently transmit the heat provided by the heater which is under the pavement with a snow-melting system, it is certainly important to minimize the loss of heat while the heat is being transferred through its path. Therefore, in this study, we conducted a compressive strength test to measure and evaluate the effect of the addition of conductive material on the strength of mortar; and a thermal conductivity test, using a surface probe, to find out the trend of the heat conductivity within the test piece specimen by the mixing of graphite and carbon fiber. And after producing conductive mortar with electric characteristics by the addition of conductive material, we conducted a heating test, so as to measure the calescence of the test piece specimen per time lapse. Different from the concept of a heating performance test of conductive mortar in which the test piece specimen itself directly produces heat for a snow-melting function when electricity is connected to conductive mortar, we conducted a heating performance test in which the temperature of the top surface is indirectly increased when electricity is connected, with conductive material (carbon-based) put into the top surface of the test piece specimen.
Abstract Recently, unusual weather phenomena occur frequently due to the global warming. Particularly freezing pavement tends to increase the pedestrian, and traffic, accident rates every year. Snow or ice layers covering the roads will cause temporary or long-term traffic jams. Frequent occurrence of accidents in the winter due to the freezing of the roads is attributed to insufficient friction between the slippery surfaces of the roads and the tires of the vehicles, while it causes inconveniences from traffic jams and accidents. In this respect, research and development is indispensible on the removal and melting of snow on freezing roads, and we can expect the effects of the prevention of social and economical losses, and the cost saving, will ensue out of this. These problems necessitate the spending of huge budget by the government for maintenance, so the development of an environment-friendly and efficient freezing-preventive pavement system is required to cope with the problems. In order to efficiently transmit the heat provided by the heater which is under the pavement with a snow-melting system, it is certainly important to minimize the loss of heat while the heat is being transferred through its path. Therefore, in this study, we conducted a compressive strength test to measure and evaluate the effect of the addition of conductive material on the strength of mortar; and a thermal conductivity test, using a surface probe, to find out the trend of the heat conductivity within the test piece specimen by the mixing of graphite and carbon fiber. And after producing conductive mortar with electric characteristics by the addition of conductive material, we conducted a heating test, so as to measure the calescence of the test piece specimen per time lapse. Different from the concept of a heating performance test of conductive mortar in which the test piece specimen itself directly produces heat for a snow-melting function when electricity is connected to conductive mortar, we conducted a heating performance test in which the temperature of the top surface is indirectly increased when electricity is connected, with conductive material (carbon-based) put into the top surface of the test piece specimen.
주제어
#Conductive material deicing pavement carbon fiber graphite
학위논문 정보
저자
이강휘
학위수여기관
전북대학교 일반대학원
학위구분
국내석사
학과
토목공학
지도교수
이재준
발행연도
2016
총페이지
viii, 89 p.
키워드
Conductive material deicing pavement carbon fiber graphite
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