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时间:2019-02-14
《防冻剂对自燃煤矸石混凝土力学性能影响研究》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第39卷第2期非金属矿Vo1.39No.22016年3月Non.Metal1icMinesMarch,2016防冻剂对自燃煤矸石混凝土力学性能影响研究贾宝新李庆文梁鹏飞李桂秀(1辽宁工程技术大学土木与交通学院,辽宁阜新123000;2阜新市公路工程质量与安全监督处,辽宁阜新123000;3阜新市兴光市政工程有限责任公司,辽宁阜新123000)摘要为探究防冻剂对煤矸石混凝土力学性能的影响,以防冻剂种类、不同掺量和养护温度等为因素进行对比试验,分析其对煤矸石混凝土强度影响水平和作用机制。结果表明:通过单掺不同防冻剂标养煤矸石混凝
2、土强度分析,早强效果显著性为氯化钙>硝酸钙>乙二醇;养护环境由负温度到正温度,基准煤矸石混凝土的抗压强度损失率与养护温度呈正相关;在一5℃和.1O℃养护环境中,不同掺量3种防冻剂对负温煤矸石混凝土均起一定防冻效果,其显著性体现为氯化钙>硝酸钙>乙二醇。关键词防冻剂;负温煤矸石混凝土;力学性能;抗压强度中图分类号:TU528.2;TU528.o42.6文献标识码:AStudyofEffectsofAntifreezingAgentsonMechanicalPropertiesofSpontaneousCombustionCoa
3、lGangueConereteJiaBaoxinLiQingwenLiangPengfeiLiGuixiu(1SchoolofCivilEngineeringandTransportation,LiaoningTechnologyUniversity,Fuxin,Liaoning123000;2FuxinHighwayEngineeringQualityandSafetySupervisionDepartment,Fuxin,Liaoning123000;3FuxinXingguangMunicipalEngineering
4、Co,Ltd.,Fuxin,Liaoning123000)AbstractInordertoinvestigatethoroughlytheefectsofantifreezingagentsonmechanicalpropertiesofcoalgangueconcrete,inconsiderationofvariousfactorssuchasthekindofantifreezingagents,dosagesofantifreezingagentsandcuringtemperature,contrasttesti
5、sconductedtoanalyzetheinfluenceofthesefactorsoncoalgangueconcretestrengthandmechanismofaction.Theresultsshowthatthesignificanceofearlystrength,throughmixingjustonetypeofantifreezingagenteachtime,byanalyzingcompressivestrengthofcoalgangueconcreteunderstandardcuringc
6、ondition,isasfollows:calciumchloride>calciumnitrate>ethyleneglyco1.Thecompressivestrengthlossrateoffiducialcoalgangueconcretehaspositivecorrelationwithcuringtemperatureascuringenvironmentvariesfromnegativetemperaturetopositivetemperature.Inaddition,underdiferentcur
7、ingenvironmentof一5℃and一10℃.threetypesofantifreezingagentswithdifferentdosagesexertantifreezingefectonnegativetemperaturecoalgangueconcretetosomeextent.Thesignificanceofearlystrengthisasfollows:calciumchloride>calciumnitrate>ethyleneglyco1.Keywordsantifreezingagents
8、;negativetemperaturecoalgangueconcrete;mechanicalproperties;compressivestrength煤矸石为煤矿开采产生固体废弃物,形成人造矸燃煤矸石混凝土力学性能影响研究则较少。石山,对周边土质环境影响巨大,严重影响城市周边为探究
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