D'Alessandro Antonella, Birgin Hasan Borke, Ubertini Filippo
Department of Civil and Environmental Engineering, University of Perugia, Via Goffredo Duranti 93, 06125 Perugia, Italy.
Sensors (Basel). 2022 Aug 15;22(16):6083. doi: 10.3390/s22166083.
Concrete constructions need widespread monitoring for the control of their state of integrity during their service life. In particular, after critical events such as earthquakes, this type of structure may experience the formation and development of cracks and damage. A quick and affordable assessment of structural behavior is indicated to identify conditions of danger for users and the incipient collapse of structural elements. This work presents investigations on multifunctional concretes with self-sensing capabilities to carry out static and dynamic monitoring. The materials were produced by the addition of conductive carbon microfibers to the concrete matrix. Electrical and sensing tests were carried out on samples with small-, medium-, and full-scale dimensions. The tests demonstrated the good electrical and electromechanical properties of the proposed smart concrete sensors, which appear promising for their use in civil elements or structures. In particular, tests on real-scale beams demonstrated the capability of the material to monitor the dynamic behavior of full-scale structural elements.
混凝土结构在其使用寿命期间需要进行广泛监测，以控制其完整性状态。特别是在地震等重大事件之后，这类结构可能会出现裂缝和损伤的形成与发展。为了识别对使用者构成危险的状况以及结构构件的早期坍塌，需要对结构行为进行快速且经济实惠的评估。这项工作展示了对具有自感应能力的多功能混凝土进行的研究，以开展静态和动态监测。这些材料是通过向混凝土基体中添加导电碳微纤维制成的。对小尺寸、中尺寸和全尺寸的样品进行了电气和传感测试。测试证明了所提出的智能混凝土传感器具有良好的电气和机电性能，在民用构件或结构中的应用前景广阔。特别是对实际尺寸梁的测试表明，该材料有能力监测全尺寸结构构件的动态行为。
