TY - JOUR
T1 - Self-sensing high-performance ultra-lightweight engineered cementitious composites using calcined petroleum coke
AU - Ran, Hongyu
AU - Elchalakani, Mohamed
AU - Yehia, Sherif
AU - Cai, Jingming
AU - Yang, Bo
N1 - Funding Information:
The research was conducted while the first author received financial support from the China Scholarship Council. The authors would gratefully acknowledge the facilities provided by the Centre for Microscopy, Characterization & Analysis, The University of Western Australia for the microstructure analyses.
Funding Information:
The research was conducted while the first author received financial support from the China Scholarship Council . The authors would gratefully acknowledge the facilities provided by the Centre for Microscopy, Characterization & Analysis, The University of Western Australia for the microstructure analyses.
Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/9/15
Y1 - 2023/9/15
N2 - In this study, the feasibility of utilizing calcined petroleum coke (CPC) as a conductive filler was investigated. A method to develop self-sensing high-performance ultra-lightweight engineered cementitious composites (ULW-ECCs) using fly ash cenospheres and CPC was proposed. The developed ULW-ECCs has a density less than 1500 kg/m3, compressive strength of 75 MPa and tensile strain capacity greater than 8%. The electromechanical properties of the ULW-ECCs were evaluated under cyclic and monotonic loading. The evaluation criteria included compression, tension, and flexure. Self-sensing of flexural damage in ULW-ECCs beams was verified by measuring the volume and surface impedance. In addition, the polarization effect and electrical conductivity stability (under different temperatures, water contents of the matrix, and testing methods) were examined. The experimental results revealed that: the mechanical properties of the ULW-ECCs can be increased without sacrificing workability by incorporating CPC. ULW-ECCs incorporating CPC show excellent self-sensing properties and weaken the polarization effect. A large gauge factor (>1000), high signal-to-noise ratio, repeatability, and high sensitivity can be achieved. The electrical conductivity stability of the ULW-ECC under different environments can be noticeably improved with sufficient CPC. Furthermore, the microstructure of the new ULW-ECCs was observed by SEM to further explain the results. The high-performance self-sensing ULW-ECCs could be utilised for health monitoring and retrofitting applications for existing or new construction.
AB - In this study, the feasibility of utilizing calcined petroleum coke (CPC) as a conductive filler was investigated. A method to develop self-sensing high-performance ultra-lightweight engineered cementitious composites (ULW-ECCs) using fly ash cenospheres and CPC was proposed. The developed ULW-ECCs has a density less than 1500 kg/m3, compressive strength of 75 MPa and tensile strain capacity greater than 8%. The electromechanical properties of the ULW-ECCs were evaluated under cyclic and monotonic loading. The evaluation criteria included compression, tension, and flexure. Self-sensing of flexural damage in ULW-ECCs beams was verified by measuring the volume and surface impedance. In addition, the polarization effect and electrical conductivity stability (under different temperatures, water contents of the matrix, and testing methods) were examined. The experimental results revealed that: the mechanical properties of the ULW-ECCs can be increased without sacrificing workability by incorporating CPC. ULW-ECCs incorporating CPC show excellent self-sensing properties and weaken the polarization effect. A large gauge factor (>1000), high signal-to-noise ratio, repeatability, and high sensitivity can be achieved. The electrical conductivity stability of the ULW-ECC under different environments can be noticeably improved with sufficient CPC. Furthermore, the microstructure of the new ULW-ECCs was observed by SEM to further explain the results. The high-performance self-sensing ULW-ECCs could be utilised for health monitoring and retrofitting applications for existing or new construction.
KW - Calcined petroleum coke
KW - Electrical conductivity stability
KW - Engineered cementitious composites (ECC)
KW - High performance
KW - Self-sensing
KW - Ultra-lightweight
UR - http://www.scopus.com/inward/record.url?scp=85165926357&partnerID=8YFLogxK
U2 - 10.1016/j.jclepro.2023.138241
DO - 10.1016/j.jclepro.2023.138241
M3 - Article
AN - SCOPUS:85165926357
SN - 0959-6526
VL - 418
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
M1 - 138241
ER -