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1、半刚性沥青混凝土路面裂缝的成因及处理网络高等教育专科生毕业大作业题目：半刚性沥青混凝土路面裂缝的成因及处理学习中心：奥鹏远程教育中心层次：高起专专业：土木工程（道桥方向）年级：2009年秋季学号：091003204083学生：刘亚玲指导教师：屈威完成日期：2011年9月15日constructionmeasure1)duringtherainyseasontopreventsettlementofformworkscaffoldingduringconstruction,loose;concretepouringrain,slumpinmoderationdecrea
2、ses,newpouringconcretetocoverwithplasticsheeting;heavyrainopenedpouringconcreteisstrictlyprohibited.2)keepdrainagefacilitiesclearofaggregatesandconstructionsite.Yuqiantodigdrainageditches,equippedwithasufficientnumberofsubmersiblepumpsandwaterpumpsformaintenance,inspection,maintenance,e
3、nsuretheequipmentingoodcondition.3)cementtemporaryfacilitiessuchaslibrary,materialshouldbehigherthantheoutsideelevationandfeaturewaterproofanddrainagefacilities.4)meansoftransportandsecurityandtoskidtherainequipment.7.6concreteconstructionqualitycontrol(1)rawmaterialsandtiethandesigngra
4、velmaterialmustforchemicalnatureandthephysicalpropertiesexperiment,meetrequirementsrearcanusing,cementshippedsiteHou,onitsvolumesecurity,andconsistency,finedegrees,dodirectedanalysis,theindexqualifiedrearcanusing;onmixingandconservationwater,withtestmortarstrengthofmethodfortest;aggrega
5、tebyfineOrthopedic,andintheaggregate,pointswarehousestacked,regularlydetectionitscontainingwaterrate.sandfinedegreesmoduleregularlycheck,ifoverprovidesofmodule0.2Shi,Arerequiredtoadjustthemixproportionofconcrete.concretemixdesign,accordingtomaterialcharacteristicsandconstructionofconcre
6、terequirements,accordingtodesignrequirementstodeterminethestrengthanddurabilityofcement,water/cementratioisdetermined,inaccordancewithconstructionrequirements,workability,slump,sandcoarseaggregatesizedeterminestherate,waterconsumption,andthenusingabsolutevolumemethodtocalculatethequanti
7、tyofsandconstructionmixtureratio.Concreteslumpcontrolinthecontextofdesigndrawings,accordingtotheminimumvalueindifferentparts.Accordingtothedifferentparts,withl~4-gradedconcrete,eachpouringasame-gradeconcrete,accordingtothenormativesample,asetofthreespecimens,instandardcuringcon
