Self-sensing performance of cementitious composites with electrostatic self-assembly carbon nanotube/titanium dioxide

被引：0
|
作者：
Zhang L. [1 ,2 ]
Zhan X. [1 ,2 ]
Han B. [3 ]
Xu K. [1 ,2 ]
Wang Y. [4 ]
机构：
[1] State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang
[2] School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang
[3] School of Civil Engineering, Dalian University of Technology, Dalian
[4] School of Civil and Architecture Engineering, Hunan University of Arts and Science, Changde
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 09期
关键词：
carbon nanotube; cementitious composites; electrical properties; electrostatic self-assembly; excluded volume effect; self-sensing performance;
D O I：
10.13801/j.cnki.fhclxb.20221223.001
中图分类号：
学科分类号：
摘要：
Carbon nanotube/titanium dioxide (CNT/TiO2) composite fillers were obtained using electrostatic self-assembly technology with combining conductive CNT and microscale TiO2based on excluded volume effect. And then, cementitious composites with electrostatic self-assembly CNT/TiO2was used to develop cementitious composites with excellent self-sensing performance. The electrical properties of cementitious composites with electro-static self-assembly CNT/TiO2were investigated. At the same time, the effects of different environmental conditions on self-sensing performance also were studied including loading amplitudes, loading rates and water content. Additionally, modification mechanisms of electrostatic self-assembly CNT/TiO2composite fillers on electrical and self-sensing performance of cementitious composites were also analyzed. Finally, the effect of different environmental factors on self-sensing performance were compared by radar chart. The results show that electrical resistivity of cementitious composites with electrostatic self-assembly CNT/TiO2is decreased by 99.8% when the volume content of CNT is 2.40vol%. Its maximum fractional change in resistivity is up to 49.23% under cyclic compression. Meanwhile, its stress sensitivity and strain sensitivity can reach 8.21%/MPa and 812, respectively. The cementitious composites with electrostatic self-assembly CNT/TiO2present excellent self-sensing performance under different loading amplitudes, loading rates and water content. The sensitivities decrease with increasing of the loading amplitudes but increase with increasing of loading rates. In addition, the maximum fractional change in resistivity, stress and strain sensitivities increase with the decreasing of the water content. The maximum fractional change in resistivity, stress sensitivity and strain sensitivity of cementitious composites with electrostatic self-assembly CNT/TiO2can reach 74.36%, 12.39%/MPa and 1 350 under full drying at 50'C, respectively. The radar chart demonstrates that the important orders of the different environmental factors effect on self-sensing performance is water content, loading amplitudes and loading rates. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
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页码：5225 / 5240
页数：15
相关论文
共 40 条
  • [1] SIAHKOUHI M, RAZAQPUR G, HOULT N A, Et al., Utilization of carbon nanotubes (CNTs) in concrete for structural health monitoring (SHM) purposes: A review, Construction and Building Materials, 309, (2021)
  • [2] HAN B G, DING S Q, YU X., Intrinsic self-sensing concrete and structures: A review, Measurement, 59, pp. 110-128, (2015)
  • [3] CHUNG DDL., Self-sensing concrete: From resistance-based sensing to capacitance-based sensing, International fournal of Smart and Nano Materials, 12, 1, pp. 1-19, (2021)
  • [4] WANG Y Y, ZHANG L Q., Development of self-sensing ce-mentitious composite incorporating hybrid graphene nanoplates and carbon nanotubes for structural health monitoring [I], Sensors and Actuators A: Physical, 336, (2022)
  • [5] OU linping, GUAN Xinchun, LI Hui, State-of-the-art of stress-sensing cement composite material and sensors [I], Acta Materiae Compositae Sinica, 4, pp. l-8, (2006)
  • [6] TENG F, LUO J L, GAO Y B, Et al., Piezoresistive/ piezoelectric intrinsic sensing properties of carbon nanotube cement-based smart composite and its electromechanical sensing mechanisms: A review, Nanotechnology Reviews, 10, 1, pp. 1873-1894, (2021)
  • [7] CHEN P W, CHUNG DDL., Carbon fiber reinforced concrete for smart structures capable of non-destructive flaw detection, Smart Materials and Structures, 2, 1, pp. 22-30, (1993)
  • [8] TEOMETE E., Transverse strain sensitivity of steel fiber reinforced cement composites tested by compression and split tensile tests, Construction and Building Materials, 55, pp. 136-145, (2014)
  • [9] LE H V, LEE D H, KIM D I., Effects of steel slag aggregate size and content on piezoresistive responses of smart ultra-high-performance fiber-reinforced concretes, Sensors and Actuators A: Physical, 305, (2020)
  • [10] HUANG Shifeng, XU Dongyu, XU Ronghua, Et al., Microcos-mic and smart properties of carbon fiber cement-based composites [J], Acta Materiae Compositae Sinica, 23, 4, pp. 95-99, (2006)
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