Piezoresistive/piezoelectric intrinsic sensing properties of carbon nanotube cement-based smart composite and its electromechanical sensing mechanisms: A review
Source abstract
Abstract
Abstract Structural health monitoring (SHM) technology based on the mechanical–electrical sensing effect of various intrinsic smart materials has a good application prospect. Carbon nanotube (CNT) has excellent electromechanical properties and hence can be doped into cement by appropriate dispersive means to produce CNT-modified cement-based smart material (CNTCS) with excellent electromechanical (piezoresistive/piezoelectric) capacity. CNTCS can be developed into a static/dynamic intrinsic sensor for SHM after effective packaging and calibration. Based on the characteristics of CNT, the dispersion methods and the dispersity characterization techniques of CNT in the water/cement matrix are summarized, and then the influence laws of various factors on piezoresistive and piezoelectric sensing behaviors of the corresponding CNTCS are also discussed. The full-frequency domain sensing mechanism of CNTCS is analyzed by combining its finite element model and electromechanical coupling theory, and the practicability of applying CNTCS as an SHM static/dynamic intrinsic sensor is further investigated.
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Research context
OpenAlex topics: Smart Materials for Construction · Concrete Corrosion and Durability · Advanced Energy Technologies and Civil Engineering Innovations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Structure Engineering, School of Civil Engineering, Qingdao University of Technology , Qingdao 266520 , China
Department of Material Science and Technology, School of Civil Engineering, Qingdao University of Technology , Qingdao 266520 , China
Shandong Engineering Research Center for Concrete Structure Durability , Qingdao 266033 , China
Department of BIM Research Center, China Construction Second Engineering Bureau Co., Ltd , Beijing 110220 , China
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