In this study, an innovative smart concrete block (SCB) using a smart ultra-high-performance concrete integrated with the multiple channel wireless sensing system was developed to monitor the loss of pre-stressing stress and the partial damage of pre-stressing steel (PS) tendons. The electromechanical behavior of the four corners of the SCB as a function of the compressive stress was investigated. The fractional change in resistivity (FCR) at the four corners of the SCB linearly increased with increasing compressive stress. The different FCRs at the four corners of the SCB could be successfully utilized to identify the partial damage and/or eccentric load position of the PS tendon. An SCB with a 20 mm-gauge length was suitable for monitoring the loss of pre-stressing stress because of higher stress sensitive coefficient (0.19–0.23%/MPa) than that (0.08–0.20%/MPa) of an SCB with a 40 mm-gauge length.

在这项研究中，开发了一种创新的智能混凝土砌块（SCB），它使用集成了多通道无线传感系统的智能超高性能混凝土来监测预应力损失和预应力钢筋的局部损坏。 PS）肌腱。研究了作为压应力函数的 SCB 四个角的机电行为。SCB 四个角的电阻率 (FCR) 的分数变化随着压缩应力的增加而线性增加。SCB 四个角处的不同 FCR 可成功用于识别 PS 肌腱的部分损坏和/或偏心载荷位置。由于应力敏感系数较高 (0.19–0.