Influence of Carbon/Steel Fiber on Conductivity of Alkali-Activated Conductive Mortar
LÜ Wenfang
ZHA Wenhua
LI Jielian
XU Tao
YIN Qian
Abstract：Alkali-activated conductive mortar was prepared using alkali-activated coal gangue-slag combined with carbon fibers(CF)and steel fibers(SF).The influence of fiber type and fiber content on the mechanical properties and resistivity of the alkali-activated conductive mortar was studied,and the electrical conductivity of the alkali-activated conductive mortar under different moisture contents and ambient temperatures was discussed.The results show that when incorporating only 0.45%CF or only 2.00%SF,the 28 d flexural strength of the alkali-activated conductive mortar increases by 67.66%and 80.78%,respectively,with concurrent enhancements in compressive strength.When incorporating only 0.30%CF or only 1.50%SF,a spatial conductive network is formed inside the alkali-activated conductive mortar,reaching the percolation threshold,which results in a significant reduction in resistivity.Additionally,the influence of moisture content and ambient temperature on its electrical conductivity is notably decreased.
Keywords：alkali-activated conductive mortarcarbon fibersteel fiberconductivity
Publication Date：2025-05-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 393-403 )