Study on the influence of absorbing agent on the performance of concrete
LI Wenjing
WANG Xiao
SHAO Jinggan
Abstract：This study investigates the effects of nickel-zinc ferrite and graphite as wave-absorbing agents on the mechanical(compressive and splitting tensile strength)and wave absorbing properties of concrete.Results indicate that compared to that not mixed,when the dosage of nickel-zinc ferrite is 3.0%,the compressive strength and splitting tensile strength increase by 6.5%and 11.9%,respectively,while the wave absorption performance is significantly enhanced,with a minimum reflection is-16 dB at 2.5 GHz,particularly effective in the high-frequency range.However,exceeding this dosage leads to a gradual decline in both properties.In con-trast,the addition of graphite,despite improving wave absorption,causes a severe deterioration in mechanical performance.Microstruc-tural analysis reveals that nickel-zinc ferrite can optimize pore structure,whereas the flaky structure of graphite creates weak interfa-cial areas,deposite C-S-H gel,affects the structural continuity and compactness,leading to the reduction of mechanical properties.It is recommended that the dosage of nickel-zinc ferrite should not exceed 3.0%,and graphite should be limited to 1.5%to balance strength requirements with wave-absorbing efficiency.
Keywords：wave absorbing concretenickel-zinc ferritegraphitemechanical propertiesabsorption reflectivity
Publication Date：2025-11-25
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：4( 69-72 )