摘要
碳纤维增强水泥(CFRC)试块是电介质,与其试块两端的电极构成电容。本文通过电容的测试,研究了在压力作用下,CFRC试块的压敏效应,得到了电容随应力和应变的变化关系。试验表明:随着应力、应变的变化,电容也发生变化,并对此现象作出了解释。电容随应力、应变的变化灵敏,而且测试数据稳定,最后算出了应变-电容的灵敏系数。
Carbon fiber reinforced cement(CFRC)specimens are dielectric,and they consitute capacitance with two electrodes of two sides of the specimens.This paper reports the compression sensibility of CFRC under pressures by means of measurement of capacitance,by which we get the relationship between capacitance of stress of strain.The result shows that the capacitance also changes with the change of stress or strain,and this phenomenon is also explained.The change of capacitance with stressstrain is sensitive,and the data of measurement is stable.Finally,the sensitivity is calculated.
出处
《混凝土》
CAS
CSCD
2003年第3期25-26,9,共3页
Concrete
基金
国家自然科学基金重点项目资助(项目批准号50238040)
