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Materials, Vol. 11, Pages 1115: Electromechanical Response of High-Performance Fiber-Reinforced Cementitious Composites Containing Milled Glass Fibers under Tension

Materials, Vol. 11, Pages 1115: Electromechanical Response of High-Performance Fiber-Reinforced Cementitious Composites Containing Milled Glass Fibers under Tension

Materials doi: 10.3390/ma11071115

Authors: Min Kyoung Kim Dong Joo Kim

The self-damage sensing capacity of high-performance fiber-reinforced cementitious composites (HPFRCCs) that blended long- (1 vol %) and medium-length (1 vol %) smooth steel fibers was considerably improved by adding milled glass fibers (MGFs) with a low electrical conductivity to a mortar matrix. The addition of MGFs (5 wt %) significantly increased the electrical resistivity of the mortar matrix from 45.9 to 110.3 kΩ·cm (140%) and consequently improved the self-damage sensing capacity (i.e., the reduction in the electrical resistivity during the tensile strain-hardening response) from 17.27 to 25.56 kΩ·cm (48%). Furthermore, the addition of MGFs improved the equivalent bond strength of the steel fibers on the basis of the higher pullout energy owing to the accumulated cementitious material particles attached to the surfaces of steel fibers.

Authors:   Kim, Min Kyoung; Kim, Dong Joo
Journal:   Materials
Volume:   11
edition:   7
Year:   2018
Pages:   1115
DOI:   10.3390/ma11071115
Publication date:   29-Jun-2018
Facts, background information, dossiers
  • particles
  • hardening
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