An experiment was conducted to investigate the matrix dependent piezoresistivity responses of high performance fiber-reinforced concretes (HPFRCs) under direct tension. Three comparative HPFRCs were produced from following matrice: M1 was the controlled matrix while amount of cement in M2 or M3 was partly replaced by CB or GGBS, respectively. All HPFRCs contained same amount of twisted steel fibers 2% volume fraction. The investigated HPFRCs exhibited strain-hardening and both self strain-sensing and self damage-sensing abilities. The replacement of cement by CB and GGBS produced high enhancements of first-cracking strengths but great reductions of gauge factors within first-cracking points. Besides, as CB and GGBS were used in M2 and M3, respectively, there were not clear effects on post-cracking strengths but slight enhancements of gauge factors within post-cracking points were observed.
Matrix dependent piezoresistivity responses of high performance fiber-reinforced concretes
Lecture Notes in Civil Engineering
2019-10-11
6 pages
Article/Chapter (Book)
Electronic Resource
English
High-Performance Fiber-Reinforced Concretes , Gauge Factor , Carbon Black , Furnace Slage , Self Sensing Engineering , Geoengineering, Foundations, Hydraulics , Sustainable Development , Landscape/Regional and Urban Planning , Structural Materials , Building Construction and Design , Transportation Technology and Traffic Engineering
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