自诊断机敏水泥基材料力-电性能测试方法研究

Study on surveying method on mechanical-electrical properties of self-diagnose cement-based materials

用不同的方法对组分确定的机敏水泥基材料力-电性能进行测试,所得到的数据有很大的差别.通过对直流电路、直流电桥、交流电路及交流电桥等方法的分析比较,指出直流电路和电桥的方法不能消除机敏水泥基材料本身存在的极化,使得反映其力-电性能的阻抗趋于稳定;而交流电路和电桥方法则可以得到稳定的阻抗值.比较数字电桥在串联和并联等效方式下的交流阻抗结果可知,串联等效方式的交流阻抗值小且稳定性好.

To a certain compose of cement - based materials, different measuring means resulted in different outcomes. Through testing and Comparing analysis with direct current , alternating circuit, direct bridge and alternating electric bridge, the paper pointed out the outcomes stability from direct current and direct bridge get worse because they could not dispel polarization existed in itself. On the contrary , both alternating circuit and alternating electric bridge could . At the same time , the paper discussed the number of impedance in series and parallel equivalent mode and pointed that the impedance under the front mode was smaller than that of the latter, moreover the value of impedance in series mode was stable.