Effect of Electrochemically Modified CFPW on Electrical Conductivity of Cement-Based Materials
LI Wenjun
WANG Yan
SUN Linlin
NIU Ditao
XING Guohua
Abstract：Electrochemical modification treatment was carried out on carbon fiber prepreg waste(CFPW).The changes in performance of the modified CFPW and its impacts on the fluidity,mechanical,and electrical conductivity properties of cement-based materials were studied,and its electrical conduction mechanism was analyzed in combination with microscopic testing techniques.The results show that when the current density is 80 mA/cm²,the surface resin removal effect of the modified CFPW is better than that at 60 mA/cm².At this time,the wettability,surface roughness,and graphitization degree of CFPW are all improved.Besides,the density is increased,and oxygen-containing functional groups are introduced into CFPW.After incorporating the modified CFPW into cement-based materials,the maximum increases in compressive strength and flexural strength reach 31.05%and 77.63%,respectively.Meanwhile,the resistivity is significantly reduced,and the effect becomes more pronounced with the extension of the curing age.At a fiber content of 0.3%,the resistivity decreases by as much as 57.94%.
Keywords：cement-based materialelectrochemical modificationcarbon fiber wastemechanical propertyelectrical conductivity
Publication Date：2025-12-30
Online Publishing Date：2026-01-08(First online date of this platform, not the publication date of the document)
Pages：9( 1257-1265 )