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时间:2019-02-04
《工字型自保温混凝土夹心秸秆砌块墙体热工性能研究》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、学兔兔www.xuetutu.com2015年第6期(总第308期】混凝土混凝土制品Number6in2015(TotalNo.308)ConcreteCONCRETEPR0DUCTSdoi:10.3969/j.issn.1002—3550.2015.06.034工字型自保温混凝土夹心秸秆砌块墙体热工性能研究吴聪,刘福胜。范军,武义馨(山东农业大学水利土木工程学院,山东泰安271018)摘要:采用热流计法对工字型混凝土砌块墙体进行了热工性能试验,测得各试验墙体稳态温度场中传热系数随时间的变化曲线;采用Ansys有限元软件对试验墙体的稳态传热过程进行了数值模拟,得到并分析了试验墙体的温度节点
2、图和热流密度矢量图。研究结果表明该工字型混凝土空心砌块具有突出的保温性能;压缩秸秆块的填充不仅能明显提高混凝土空心砌块的保温性能,而且也能提高墙体传热性能的稳定性;玻化微珠一小麦秸秆复合保温砂浆用作外墙体外保温材料,对墙体保温性能的提高具有积极作用,但对墙体传热性能的稳定性产生较小的不利影响;压缩秸秆块和玻化微珠一小麦秸秆复合保温砂浆的研制为农作物秸秆的回收利用提供了一条经济可行的途径,具有极大的社会意义。关键词:工字型混凝土空心砌块;压缩秸秆块;复合保温砂浆;数值模拟;热工性能中图分类号:TU528.7文献标志码:A文章编号:1002—3550(2015)06—0127—04Resear
3、chontheheattransferperformanceofT--shapedself—-insulationconcreteblockwallfillingwithcompressedblocksofstrawWUCong,LIUFusheng,FANJun,WUYixin(CollegeofWaterConservancyandCivilEngineering,ShandongAgriculturalUniversity,Taihn271018,China)Abstract:Heattransferperformancetestsonthe工一shapedconcreteblock
4、wallswerecarriedoutbyusingheatflowmeter.andtheheattransfercoeffmientsvariedalongwiththetimeofthesedifferentkindsofwallsinsteady—statetemperaturefieldweretested.Thesmady—statethermaltransmissioncoursesofthesewallsweresimulatedbyAnsyssoftware,thengotandanalyzedthenodaltempera—tureandthethermalfluxve
5、ctorofthesewalls.Theresultoftheresearchshowsthatthe工一shapedconcretehollowblockhasoutstand—ingthermalpreservationperformance.Fillingthecompressedblocksofstrawintotheconcretehollowblockcannotonlystrengthenthethermalpreservationperformanceofthehollowblockobviously,butalsocanimprovethestabilityofthewa
6、ll'sheatperformance.Asakindofexternalinsulationmaterial,theglazedhollowbeadsinsulationmortarwiththewheatstrawisofmuchbenefittotheimprove—mentofthewall'sthermalpreservationperformance,butit'salsoofalittledisadVantageOuseffectonthestabilityofthewall'sheatper-formance.Thecreationofthecompressedblocko
7、fstrawandtheglazedhollowbeadsinsulationmortarwiththewheatstrawCallprovideaeconomicallyfeasiblewaytorecyclecropsfaws,andit'sofmajorsignificanceforthesociety.Keywords:T—shapedconcretehollowblock;compressedblockofst
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