第37卷第1期粉煤灰综合利用Vol.37No.12023年2月FLYASHCOMPREHENSIVEUTILIZATIONFeb.2023材料科学HEC取代水泥对玻璃纤维再生混凝土力学性能的影响*InfluenceofHECReplacementRateonMechanicalPropertiesofGlassFiberRecycledConcrete庞洁1,李特1,魏炳乾2(1.杨凌职业技术学院,陕西杨凌712100;2.西安理工大学水电学院,陕西西安710048)摘要:为了提高建筑垃圾利用率和改善再生混凝土性能,以玻璃纤维再生混凝土为研究对象,研究了HEC取代水泥对玻璃纤维再生混凝土抗压强度、劈裂抗拉强度、比强度和保温性能的影响。结果表明:玻璃纤维再生混凝土抗压强度、劈裂抗拉强度随HEC取代率的增加呈现先增强后下降趋势,当HEC取代率为50%时,再生混凝土抗压强度和劈裂抗拉强度最大;玻璃纤维能够显著提高再生混凝土轻质高强性能,比强度随玻璃纤维掺量的增加呈现先增大后降低趋势,当玻璃纤维掺量为2%时,混凝土的抗压强度和比强度最大。综合表明,当HEC取代率为50%、玻璃纤维掺量为2%时,玻璃纤维再生混凝土力学性能和保温性能最好。关键词:HEC;再生混凝土;玻璃纤维;力学性能;比强度中图分类号:TU528文献标志码:A文章编号:1005-8249(2023)01-0053-06DOI:10.19860/j.cnki.issn1005-8249.2023.01.010PANGJie1,LITe1,WEIBingqian2(1.YanglingVocationalandTechnicalCollege,Yangling712100,China;2.CollegeofHydraulicandHydropower,Xi’anUniversityofTechnology,Xi’an710048,China)Abstract:Inordertoimprovetheutilizationrateofconstructionwasteandimprovetheperformanceofrecycledconcrete,theglassfiberrecycledconcreteistakenastheresearchobject.TheeffectofHECreplacementrateonthecompressivestrength,splittingtensilestrength,specificstrengthandthermalinsulationpropertiesofglassfiberrecycledconcretewerestudied.TheresultsshowthatthecompressivestrengthandsplittingtensilestrengthofglassfiberrecycledconcreteincreasefirstandthendecreasewiththeincreaseofHECreplacementrate.WhenHECreplacementrateis50%,thecompressivestrengthandsplittingtensilestrengthofrecycledconcretearethelargest.Glassfibercansignificantlyimprovethelightweightandhighstrengthpropertiesofrecycledconcrete.Thespecificstrengthincreasesfirstandthendecreaseswiththeincreaseofglassfibercontent.Whentheglassfibercon...