CE 200 FINAL EXAM WITH ALL ANSWERS CORRECTLY UPDATED.

Ce 200 Final Exam With All Answers b b b b b b




Correctly Updated b b




the nfine naggregate nsieved nand nreported nabove ndoes nnot nqualify nfor nuse nin
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nportland ncement nconcrete nbecause: n- n ncorrect nanswer-more nthan n45% nof nthe
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nsieved nsand nhas npassed none nsieve nand nretained nin nthe nconsecutive nstandard
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nsieve
b




ASTM nC n136, n"standard ntest nmethod nfor nsieve nanalysis nof nfine nand ncoarse
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naggregates", nrequires nthat nthe nnest nof nsieves nused nfor nsieve nanalysis nbe
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nagitaded nfor nan nappropriate namount nof ntime, nsuch nthat, nevery nindividual nsieve,
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nhaving nbeen nweighed nsubsequent nto nevery nshaking, nwould nnot nhave nthe nmass
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nof nits ncontent nvary nby nmore nthan n1% nin nconsecutive nshakings: n- n ncorrect
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nanswer-because, nover-sieving nthe nsand nwould ncause nbreaking nthe nsand
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nparticles ninto nsmaller npieces nand nindicate nthe nsand nto nbe nfiner
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it nmay nbe nsaid nabout nsieve nanalysis nthat: n- n ncorrect nanswer-none nof nthe nabove
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nis ntrue
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the nprimary npurpose nof nusing na nsand nsample nsplitter nin nsieve nanalysis nis nto; n- n
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ncorrect nanswer-none nof nthe nabove nis ntrue
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a nlimitation nof nusing nthe nfineness nmodulus nfor ndetermining naggregate
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nacceptability nfor nuse nin nportland ncement nconcrete ni ns nthat nthe nFM n- n ncorrect
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nanswer-test nresults nfrom nfineness nmodulus ntests nprovide nno nindication non nother
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nattributes nof nthe naggregate nimportant nfor nuse nin nconcrete, nsuch nas nmoisture
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ncontent, nwater nabsorbance, nfriability, nsurface ntexture, netc
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the ntypes nof ncements nused nas nbinders, nor nas nprimary ncomponent nof nbinders,
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nmay nbe ngrouped nas nhydraulic nor nnon-hydraulic ncements: n- n ncorrect nanswer-all
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nof nthe nabove:
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pc nis nthe nleading nhydraulic ncement nused nin ncivil nengineering n
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asphalt nis nthe nleading nnonhydraulic ncement nused nin ncivil nengineering
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lime, na nnon-hydraulic ncements, nthat nused nto nbe ndominant ncement nemployed nin
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nmasonry nbefore nthe ndiscovery nof nroman ncement
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, another nhydraulic ncementitious nmaterial-i.e. na nhydraulic ncement nother nthan
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nportland ncement nis n- n ncorrect nanswer-all nof nthe nabove:
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pozzolana nor nvolcanic nash nwhich nobrains nits ncementing ncapability nafter nreacting
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nwith nhydrated nlime
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fly nash nor nthe nash nfrom nsmokestacks nof ncoal-burning nfurnaces n
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slag ncement, nwhich nis nthe nearth nmaterial nthat ncombines nwith nhydrated nlime nin na
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nblast nfurnace n(used nin nthe nmanufacture nof niron n
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silica nfume nproduced nas nthe nbyproduct nof nreducing nquartz
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the nmost nimportant nattribute nof nhardened nor ncured nPCC nis: n- n ncorrect nanswer-
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compressive nstrength b




air nentraining nagents nor nadmixtures nare nused nin nnearly nall nportland ncement
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nconcrete nto ntake nadvantage nof nthe nbenefits nof nusing nair nentrainment, nsuch nas:
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n- n ncorrect nanswer-all nof nthe nabove:
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improving nthe ndurability nof nthe ncured nand nhardened nPCC nwhen nexposed nto
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nextreme nfreezing nand nthawing
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improving nthe nworkability nof nmixed nconcrete nwithout nincreasing nthe nwater
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ncontent
b




water ntight b




Alkali-Silica nReactivity nis: n- n ncorrect nanswer-all nof nthe nabove: b b b b b b b b b




a nchemical nreaction nbetween nsome nof nthe nalkaline nmaterial nin nthe nPC nand nsilica
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ncomponents nof ncertain naggregates
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undesirable, nas nsuch nreactivity ncauses nrelease nof ninternal ngases, nwhich npose b b b b b b b b b b




ninternal nstresses
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avoidable nby nusing nlow nalkali nreactive nPC nand/or naggregates b b b b b b b b




which nof nthe nfollowing nis ntrue nabout nPortland ncement n- n ncorrect nanswer-all nof
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nthe nabove:
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the nstrength nof nPC nis ndetermined nby nmeasuring nthe nstrength nof nmortar nmade
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nwith nOttawa nstandard nsand
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the ninitial nand nfinal nset ntime nof nPC nshould nbe ndetermined nusing neither nvicat nor
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ngillmore npenetrometer
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per nastm nC150, nthe nsoundness nof nPC npaste, nwhich nrefers nto nthe nability nof nthe
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npaste nto nretain nits nvolume nthrough nthe ncuring nprocess, ncould nbe nmeasured
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nusing nan nautoclave nexpansion napparatus
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which ntype nof nPC nis nmost nsuitable nfor nlarge nvolume nconcrete nconstruction n(large
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ndams) n- n ncorrect nanswer-type nIV
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the nquality nof nportland ncement nconcrete ndepends non, nmore nthan nany nother
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nfactor, nthe n- n ncorrect nanswer-quality nof nthe npaste nof nthe nPCC
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the npaste nin nportland ncement nconcrete nincludes n- n ncorrect nanswer-portland
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ncement, nmix nwater, nand nadmixtures
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all nthe nessential nand ndesirable nattributes nof nportland ncement nconcrete nPCC,
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nsuch nas ndurability, nimpermeability, nresistance nto nvolume nchanges, ndepend nmore
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