15 concrete mix design and quality control

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1、15ConcreteMixDesignandQualityControl混凝土配比設(shè)計(jì)和質(zhì)量控制Concretemixdesigncanbedefinedastheprocedurebywhich,foranygivensetofconditions,theproportionsoftheconstituentmaterialsarechosensoastoproduceaconcretewithalltherequiredpropertiesfortheminimumcost.Inthiscontextthecostofanyconcreteinclude

2、s,inadditiontothatofthematerialsthemselves,thecostofthemixdesign,ofbatchingbatching：['b?t∫i?]n.配料,定量,計(jì)量,mixingandplacingtheconcreteandofsitesupervisionsitesupervision：現(xiàn)場(chǎng)質(zhì)量管理；supervision：[,sju:p?'viЗ?n]n.監(jiān)督,管理.Qualitycontrolrefersinthefirstinstanceinthefirstinstance：首先,起初tothesuperv

3、isionexercisedonsitetoensureboththatthematerialsusedintheproductionoftheconcreteareoftherequiredqualityandthatthestatedmixproportionsareadheredtoadhere[?d'hi?]to：附著于,堅(jiān)持,遵守ascloselyasispossiblewiththeavailablesitefacilitiesfacility：[f?'siliti]n.設(shè)備,裝備,工具.Italsoreferstothecontroltesti

4、ngofthequalityofthehardenedconcretetoensurethatitconformswithconform[k?n'fo:m]with：符合,遵守,使適應(yīng)thedesignrequirementsand,whereitdeviatesdeviate：['di:vieit]v.偏離significantlyfromthis,thetakingofthenecessarycorrectiveaction.Mixdesign,qualitycontrolandtheover-allcostofthefinishedconcretepr

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

6、litycontrolassociatedwiththeproductionofconcreteonsitehavebeenconsideredearlier.Someofthestatisticalmethodsstatisticalmethod：統(tǒng)計(jì)法,平均法；statistical：[st?'tistik?l]adj.統(tǒng)計(jì)的,統(tǒng)計(jì)學(xué)的ofqualitycontrolusedfortheinterpretationinterpretation：[in,t?:pri'tei∫?n]n.解釋,闡明,口譯,通譯ofcontroltestsontheharden

7、edconcretearedescribedhere.混凝土配比設(shè)計(jì)即在任何給定的一系列條件下選擇組成材料的比例使之在最小成本的基礎(chǔ)上獲得滿足所有要求性能的混凝土的過(guò)程。在本章，任何混凝土的成本除材料本身成本外，還包括配比設(shè)計(jì)、配料、拌和、澆注混凝土及工地管理成本。首先，質(zhì)量控制指可能用現(xiàn)場(chǎng)設(shè)備時(shí)現(xiàn)場(chǎng)監(jiān)督以確保用于混凝土配比的材料達(dá)到要求質(zhì)量并且規(guī)定的配比盡可能接近地遵守。它也指對(duì)硬化混凝土進(jìn)行質(zhì)量控制檢測(cè)以確保與設(shè)計(jì)要求一致，并在嚴(yán)重偏離時(shí)采取必要的更正措施。配比設(shè)計(jì)、質(zhì)量控制和最終混凝土產(chǎn)品的成本是互相依賴(lài)的，這使得討論影響配比設(shè)計(jì)的因素變得日益顯著。本

8、章講述任何混凝土的基本要求及其納入混凝土配比的途徑。