弹性范围内碳纤维混凝土在循环荷载作用下压敏性研究

Study on the Compression Sensibility of Carbon Fiber Reinforced Concrete in Elastic Loading Process

目的研究处于三向受压状态下的碳纤维混凝土试件的压敏性,并对比单向受压状态及三向受压状态下试件的压敏性,为试件实际应用到道路测重系统中提供理论依据.方法分别对处于单向受压状态及三向受压状态下的同一试件施加弹性范围内的循环荷载,观察电阻变化,由此来衡量两种状态下试件的压敏性变化.结果处于三向受压状态的碳纤维混凝土试件随着荷载的增加,电阻减小,当对试件由加载转化成卸载时,电阻由减小阶段转为增大阶段.结论碳纤维混凝土试件的电阻变化能正确地反映所施加荷载的变化情况,应用在道路测重系统中具有可行性.

This paper aims at the research on the compression sensibility of carbon fiber reinforced concrete in triaxial compression,and comparison with the specimens in one-way compression.The methodology adopted as specimens can be used in traffic monitoring and weighting in future.With the changes of electrical resistance separately in triaxial compression and one-way compression,the resistance of the carbon fiber reinforced concrete in triaxial compression decreases with the load increasing.When the load changes ...