2023·13基础研究17ModernChemicalResearch当代化工研究2023·13基础研究17ModernChemicalResearch当代化工研究煤矸石混凝土配比优化及其水化机理研究＊冯鹤*王晓丽（贵州建设职业技术学院贵州551400）摘要：通过对煤矸石混凝土立方体开展单轴抗压强度测试，研究了煤矸石混凝土料浆浓度、煤矸石细矸率以及水泥掺量对强度的影响关系，获得了煤矸石混凝土中各主要成分的优化配比区间。研究表明：在煤矸石混凝土的配比中，混凝土料浆质量浓度区间以76%～80%为宜；细骨料的掺量区间以35%～45%为宜；水泥掺量对煤矸石混凝土强度影响较大，且随着水泥的增加而快速增加，其掺量与水泥呈现正相关；同时，对不同期龄的煤矸石混凝土进行了电镜扫描以及EDS能谱扫描，结果表明随着期龄的增长，其水化产物会发生改变，水化产物之间会相互交织形成致密结构，提高材料强度。关键词：煤矸石混凝土；抗压强度；力学试验；优化配比；水化机理中图分类号：TU528.01文献标识码：ADOI：10.20087/j.cnki.1672-8114.2023.13.006StudyonRatioOptimizationandHydrationMechanismofCoalGangueConcreteFengHe*,WangXiaoli(GuizhouConstructionVocationalandTechnicalCollege,Guizhou,551400)Abstract：Usingcoalgangueinsteadofnaturalaggregateintraditionalconcretetopreparenewcoalgangueconcretematerialscannotonlyimprovetheproblemthatcoalgangueisdifficulttodealwithincoalminingenterprises,butalsoreducetheminingofnaturalstoneandalleviatetheshortageofresources.Throughtheuniaxialcompressivestrengthtestofcoalgangueconcretecube,theinfluenceofcoalgangueconcreteslurrycon-centration,coalganguefineganguerateandcementcontentonstrengthwasstudied,andtheoptimalratiorangeofeachmaincomponentincoalgangueconcretewasobtained.Theresultsshowthatintheproportionofcoalgangueconcrete,themassconcentrationrangeofconcreteslurryis76%～80%.Thesuitablerangeoffineaggregatecontentis35%～45%.Thecementcontenthasagreatinfluenceonthestrengthofcoalgangueconcrete,andincreasesrapidlywiththeincreaseofcement,anditscontentispositivelycorrelatedwithcement.Atthesametime,electronmicroscopescanningandEDSenergyspectrumscanningwerecarriedoutoncoalgangueconcreteofdifferentages.Theresultsshowthatwiththeincreaseofage,thehydrationproducts...
