Abstract
The pressure-sensitive cement-based composites added with multiscale carbon materials, that is, carbon blacks, carbon fibers, and carbon nanotubes are investigated. In the article, the sensing property of cement-based composites with seven different proportions of carbon blacks, carbon fibers, and carbon nanotubes under cyclic loading is discussed and then the optimized formula among these seven proportions is chosen to investigate the influences of temperature and saturation degree on its sensing properties. In addition, the maximum perceivable frequency of multiscale carbon-admixtures–enhanced cement-based composite is obtained from the experimental results. The results indicate that the fractional change in resistance of the cement-based sensing composites increases at first and then decreases with the increase of temperature, but decreases with the increase of humidity. Additionally, the fractional change in resistance has a decrease with the increase of loading frequency, and the cement-based sensing composites prepared can perceive the biggest loading frequency of 0.5 Hz.
Highlights
Keywords Cement-based composites, multiscale carbon-admixtures, pressure sensitivity
When some conductive materials are added into cementbased composites, their resistivity will have a change along with the change of stress state, which is called the pressure sensitivity
Since the 1990s, many researches concerning the pressure-sensitive properties of cement-based material with carbon fibers (CFs), carbon blacks (CBs), and carbon nanotubes (CNTs) have been widely conducted.[1,2,11,12,13,14,15,16]
Summary
Keywords Cement-based composites, multiscale carbon-admixtures, pressure sensitivity When some conductive materials are added into cementbased composites, their resistivity will have a change along with the change of stress state, which is called the pressure sensitivity.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
