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时间:2020-04-20
《太湖淤泥烧结砖的制备及其性能.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第35卷第1O期吃尉匙求Vo1.35No.1OZOl2年IO月EnvironmentalScience&TechnologyOct.2012耿飞,潘龙,沈勇林,等.太湖淤泥烧结砖的制备及其性能明.环境科学与技术,2012,35(10):182—185.GangFei,PanLong,ShaoYong-lin,eta1.ProductionandperformanceofsinteredbricksmadebyTaihuLakesilt[J】.EnvironmentalScience&Technology,2012,35(10):182—185.太湖淤泥烧结砖的制备及其性
2、能耿飞,潘龙2,沈勇林,张银丰。,傅大放。,赵子龙。(1.南京航空航天大学航空宇航学院,江苏南京210016;2.南京市雨污水资源化利用工程技术研究中心,江苏南京210000;3.东南大学土木工程学院,江苏南京210096)摘要:以太湖淤泥和粉煤灰为原料,干燥后混合加湿搅拌,压制成40minx40mmx40mln的试样,经干燥后放人电阻炉中焙烧,测试分析了不同粉煤灰掺量和焙烧温度下淤泥烧结砖的吸水率、抗压强度、腐蚀性及重金属浸出等性能。结果表明:增加粉煤灰掺量,砖体吸水率增大,抗压强度降低;当粉煤灰掺量30%、烧结温度950℃时,淤泥烧结砖强度可达到13.6MPa,满足
3、国家承重墙(MU10)使用标准。砖体浸出液微偏碱性,但不具有腐蚀性,高温焙烧可使淤泥中重金属得到有效固化。关键词:太湖淤泥;烧结砖;吸水率;抗压强度;重金属浸出中图分类号:X703.1文献标志码:Adoi:10.39690.issn.1003—6504.2012.10.039文章编号:1003—6504(2012)10—0182—04ProductionandPerformanceofSinteredBricksMadebyTaihuLakeSiltGENGFei,PANLong0,SHENYong—lin,ZHANGYin—feng0,FUDa~fang0。ZHAOZ
4、i—long0‘(1.SchoolofAerospaceEngineering,NanjingUniversityofAeronauticsandAstronautics,Nanjing210016,China;2.NanjingEngineeringResearchCentreofRainwaterandSewageReuse,Nanjing210000,China;3.SchoolofCivilEngineering,SoutheastUniversity,Nanjing210096,China)Abstract:Prior-driedTaihuLakesiltan
5、dflyashasrawmaterialswerefirstlystirredsuficientlywithanecessaryamountofwatertocastintocubesof40mrn(L)x40mm(W)x40mm(n)underaproperaxialcompression.Afteraperiodofdryingtimeandsinteringtimeinthesinteringfurnace,thecubeswerefinallymadeintobricks.Thepropertiesofbricksofvariousflyashweightfra
6、ctionsandunderdifferentsinteringtemperatureswereassayed,suchasabsorbability,compressivestrength,corrosivityandheavymetallicionleaching.Resultsshowedthatthebrickabsorbabilityincreased,butcompressivestrengthsreducedwithallincreasingamountofflyash.Compressivestrengthofbrickscontaining30%fly
7、ashsinteredat950oChadamajorriseto13.65MPa,whichobviouslymetnationalcriteriaforaload—bearingwall(MUIO).Theleachingsolutionofthebrickswasmerelyalkaline,butnotcorrosive,whichindicatedthathightemperaturesinteringhadaneffectonheavymetallicionimmobilization.Keywords:TaihuLakesi
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