粉煤灰-氧化石墨烯对混凝土性能影响研究

打开文本图片集

中图分类号：TU528 文献标志码：A 文章编号：1005-8249（2026）02-0042-07

DOI：10.19860/j.cnki.issn1005- 8249.2026.02.007

Research on the Effects of Fly Ash - Graphene Oxide on Concrete Properties

GAO Renhai， ZHANG Yi，LIU Daopu，QIU Qian（Wuhan Optics Valley Construction Investment Co.， Ltd.， Wuhan 430oOO，China）

Abstract：Thepromotionofflyashconcreteaids inreducingcementconsumption，yetitshigh-volumeappication presents challenges with low early strength. To address this，the effects of single or combined addition of 0.06% graphene oxide（GO） with 20% ， 30% ，or 40% fly ash（FA）on concrete slump，compressive strength，splitting tensile strength，elastic modulus， andabrasionresistance were investigated，alongsideexploringtheirsynergisticenhancement mechanisms.Results indicate：- Single GOadition significantlyreduces slump，while combinedFAaditioncompensates for slump loss and improves workability；-StrengthgainsfromsingleGOaditionareconcentratedwithin28days，whereassingleFAadditionexhibitsslow strengthdevelopment withinthis period；Thecombinedadditionof GOmitigatesthedelayedearly-stage strengthdevelopment inherent in FA concrete. Specifically，a 30% FA content yielded 28 - day compressive and splitting tensile strengths 10.7% and 3.7% higher than the control group，respectively，with 20% FA demonstrating superior performance to GO alone. Furthermore，the incorporationofboth GOandFA contributesto enhancedelastic modulusand abrasionresistance.The ffect of 30% FA addition surpasses that of GO alone，while 40% FA addition yields higher values than ordinary concrete. These findings provide valuable reference for the mix design of high-fly-ash-content early-strength concrete.

Key words： fly ash； graphene oxide；mechanical strength； wear resistance; synergistic mechanism

0 引言

水泥作为混凝土的关键组成部分，其高碳排放问题备受关注。（剩余9289字）