15 concrete mix design and quality control

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1、15ConcreteMixDesignandQualityControl混凝土配比设计和质量控制Concretemixdesigncanbedefinedastheprocedurebywhich,foranygivensetofconditions,theproportionsoftheconstituentmaterialsarechosensoastoproduceaconcretewithalltherequiredpropertiesfortheminimumcost.Inthiscontextthecostofanyconcreteinclude

2、s,inadditiontothatofthematerialsthemselves,thecostofthemixdesign,ofbatchingbatching：['bæt∫iŋ]n.配料,定量,计量,mixingandplacingtheconcreteandofsitesupervisionsitesupervision：现场质量管理；supervision：[,sju:pə'viЗən]n.监督,管理.Qualitycontrolrefersinthefirstinstanceinthefirstinstance：首先,起初tothesuperv

3、isionexercisedonsitetoensureboththatthematerialsusedintheproductionoftheconcreteareoftherequiredqualityandthatthestatedmixproportionsareadheredtoadhere[əd'hiə]to：附着于,坚持,遵守ascloselyasispossiblewiththeavailablesitefacilitiesfacility：[fə'siliti]n.设备,装备,工具.Italsoreferstothecontroltesti

4、ngofthequalityofthehardenedconcretetoensurethatitconformswithconform[kən'fo:m]with：符合,遵守,使适应thedesignrequirementsand,whereitdeviatesdeviate：['di:vieit]v.偏离significantlyfromthis,thetakingofthenecessarycorrectiveaction.Mixdesign,qualitycontrolandtheover-allcostofthefinishedconcretepr

5、oductareallinterdependentandthiswillbecomeincreasinglyapparentasthefactorsaffectingmixdesignarediscussed.Inthischapterthebasicrequirementsforanyconcreteandthewayinwhichthesemaybeincorporatedintobeincorporated[in'ko:pəreitid]into：合并,并入concretemixdesignaredescribed.Theessentialsofqua

6、litycontrolassociatedwiththeproductionofconcreteonsitehavebeenconsideredearlier.Someofthestatisticalmethodsstatisticalmethod：统计法,平均法；statistical：[stə'tistikəl]adj.统计的,统计学的ofqualitycontrolusedfortheinterpretationinterpretation：[in,tə:pri'tei∫ən]n.解释,阐明,口译,通译ofcontroltestsontheharden

7、edconcretearedescribedhere.混凝土配比设计即在任何给定的一系列条件下选择组成材料的比例使之在最小成本的基础上获得满足所有要求性能的混凝土的过程。在本章，任何混凝土的成本除材料本身成本外，还包括配比设计、配料、拌和、浇注混凝土及工地管理成本。首先，质量控制指可能用现场设备时现场监督以确保用于混凝土配比的材料达到要求质量并且规定的配比尽可能接近地遵守。它也指对硬化混凝土进行质量控制检测以确保与设计要求一致，并在严重偏离时采取必要的更正措施。配比设计、质量控制和最终混凝土产品的成本是互相依赖的，这使得讨论影响配比设计的因素变得日益显著。本

8、章讲述任何混凝土的基本要求及其纳入混凝土配比的途径。