지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
PURPOSES : The purpose of this study is to provide the method of how to measure the coefficient of thermal expansion of concrete using temperature compensation principle of electrical resistance strain gauge. METHODS : The gauge factor compensation method and thermal output(temperature-induced apparent strain) correction method of self-temperature compensation gauge were investigated. From the literature review, coefficient of thermal expansion measurement method based on the thermal output differential comparison between reference material(invar) and unknown material(concrete) was suggested. RESULTS : Thermal output is caused by two reasons; first the electrical resistivity of the grid conductor is changed by temperature variation and the second contribution is due to the differential thermal expansion between gauge and the test material. Invar was selected as a reference material and it's coefficient of thermal expansion was measured as $2.12{\times}10^{-6}m/m/^{\circ}C$. by KS M ISO 11359-2. The reliability of the suggested measurement method was evaluated by the thermal output measurement of invar and mild steel. Finally coefficient of thermal expansion of concrete material for pavement was successfully measured as $15.45{\times}10^{-6}m/m/^{\circ}C$. CONCLUSIONS : The coefficient of thermal expansion measurement method using thermal output differential between invar and unknown concrete material was evaluated by theoretical and experimental aspects. Based on the test results, the proposed method is considered to be reasonable to apply for coefficient of thermal expansion measurement.
목차
등록된 정보가 없습니다.
참고문헌 (10)
참고문헌 신청
AASHTO T 336-11 / 2011 / Coefficient of thermal expansion of hydraulic cement concrete / America Association of State and Highway Transportation Officials
Finke, T. E. / 1978 / Determination of thermalexpansion characteristics of metals using strain gages / Experimental Mechanics :155~158
Ju, J. W. / 1992 / Temperature characteristics of strain gauge in the extreme low temperature condition / The Korean Society of Mechanical Engineers 32(6):514~523
Kim, C. W. / 2013 / Improvement of concrete pavement technology in Korea / Conference material of concrete pavement technical committee
KS F 2608 / 2011 / Measuring method of linear thermal expansion for building materials / Korean Industrial Standards
Finke, T. E. / 1978 / Determination of thermalexpansion characteristics of metals using strain gages / Experimental Mechanics :155~158
Ju, J. W. / 1992 / Temperature characteristics of strain gauge in the extreme low temperature condition / The Korean Society of Mechanical Engineers 32(6):514~523
Kim, C. W. / 2013 / Improvement of concrete pavement technology in Korea / Conference material of concrete pavement technical committee
KS F 2608 / 2011 / Measuring method of linear thermal expansion for building materials / Korean Industrial Standards
이 논문의 저자 정보
최근 본 자료
댓글(0)
0