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1、房屋建筑工程专业基础知识1、气硬性胶凝材料是指只能在空气中凝结、硬化,保持和发展其强度的胶凝材料,如石灰、石膏和水玻璃等。2、生石灰熟化时放出大量的热量。生石灰熟化体积增大1-2.5倍。3、为了消除过火石灰在使用中造成的伤害,石灰膏应在储灰坑中存放半个月以上方可使用。这一过程称为陈伏。4、石灰的特性:良好的保水性;凝结硬化慢、强度低;吸湿性强;体积收缩大;耐水性差。5石膏及其制品具有轻质、隔热、阻火、吸音、形体饱满、容易加工等一系列优良性能。6石膏的特性:凝结硬化快;孔隙率大,体积密度小,保温、吸声性能好;具有一定的调湿性;耐水性、抗冻性差;凝结硬化时体积微膨胀;防火
2、性好;装饰性好7水泥按矿物组成不同,分为硅酸盐水泥、铝酸盐水泥、硫铝酸盐水泥、铁铝酸盐水泥。8硅酸盐系列水泥按其性能和用途不同,分为通用水泥、专用水泥和特性水泥。让我们看到了如何去做才叫坚定了理想信念,如何去做才算做到了奉献、坚守,做到了一名优秀共产党员应该做到的。rationalconcepttoallownetworkmoreinlinewiththeobjectivelawsofthefuturedevelopmentofthecity.1.5.2planningresearchareas:throughoutthecity,withanareaof13,000
3、km2,cover2districtsand8countiesofthecity,includingdowntownandcitylevels.Planningrange:mainforCityCenterCity,areafor1268km2,NorthtocasesfieldXiang,andJinPingzhen,andGaoDianZhen,andhuangshazhen,andLiuhometownNorthTownshipterritories,EastNanXIZhen,andJiangnanEastTownshipterritories,Southto
4、horsehome,andsonghome,andLiZhuangZhen,andSouthwidetown,andZhaofieldStreetdoSouthadministrativeborder,Westtobaixizhen,anddishdamtown,andthoughtslopeXiangWestTownshipterritories.1.6planningtarget1.6.1GeneraltargetthisitemsresearchtowillYibincitybuiltYangtzeRiverupstreamchuanYunnanGuizhouc
5、ombinedDepartmentRegionalCenterCity,supportcityspaceoforderedexpandfortarget,referenceYibincityintegratedtrafficplanning(2014-2030years)andtheYibinCityCitygeneralplanning(2013-2030years)ofresearchresults,usingscience,andadvancedofnetworkresearchmethod,buildingmorelevel,andmoremodeoftrac
6、ktrafficsystem,Meetatdifferentlevelsofthecity'srailtransportationneedsandqualityrequirements.1.6.2target1,refinedurbandevelopmentaxisofurbandevelopmentconcepts,judgments,rail-guideddowntownfromsolotogroup-developmentofthenetwork,fromoneCentertocentercitywithaxialdevelopment.2,networkpla
7、nningadaptedtoYibinCitystatusandfuturedevelopmentneeds,demonstratesrationalscaleofrailtransporttomeettheneeds9硅酸盐水泥的熟料中四种主要矿物质为硅酸三钙(3CaO·SiO2)、硅酸二钙、铝酸三钙、铁铝酸四钙。10水泥加水拌合后,形成可塑性的浆体,随着水化反应的进行,水泥浆体逐渐变稠失去可塑性,但还不具有强度的过程,称为水泥的“凝结”,随后开始产生强度,并逐渐发展成为坚硬的水泥石,这一过程称为“硬化”。11石膏的掺量:生产水泥时掺入石膏,主要是