ACIl Concretel Field-Testingl Technician-l Gradel Il Examl Guidel (Latestl 2025/l 2026l Update)l Q/Al |l Gradel A|l 100%l Correctl (Verifiedl Answers)
Q:l Whatl shouldl bel donel ifl thel concretel containsl aggregatel largerl thanl isl appropriatel forl thel sizel ofl thel moldsl orl equipmentl beingl used?l (Orall Exam)
Answer:
Wetl sieving
Q:l Startl thel testsl forl slump,l temperature,l andl airl contentl withinl howl manyl minutesl afterl obtainingl thel finall portionl ofl thel compositel sample?l (Orall Exam)
Answer:
5l min.
Q:l Startl moldingl specimensl forl strengthl testsl withinl howl manyl minutesl afterl fabricatingl thel compositel sample?l (Orall Exam)
Answer:
15l min.
Q:l Froml whatl mustl thel concretel samplel bel protected?l (Orall Exam)
Answer:
Sun,l wind,l rapidl evaporation,l andl contamination
Q:l ASTMl C143
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Answer:
Standardl Testl Methodl forl Slumpl ofl Hydraulic-Cementl Concrete
Q:l Thel slumpl testl isl applicablel tol plasticl concretel withl al maximuml sizel aggregatel ofl _____l .
Answer:
1½l in.
Q:l Whenl thel concretel containsl aggregatel largerl thanl allowedl forl thel slumpl test,l thel largel aggregatel mustl bel _____.
Answer:
Removedl byl wetl sievingl thel samplel overl 1½l in.l sieve
Q:l Thel moldl forl makingl thel slumpl testl isl inl thel shapel ofl _____.
Answer:
Thel frustuml ofl al cone
Q:l Thel heightl ofl thel slumpl moldl isl _____.
Answer:
12l in.
Q:l Thel interiorl surfacel ofl thel slumpl moldl isl allowedl tol havel minorl irregularities.l Truel orl False?
Answer:
False
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Q:l Forl usel inl thel slumpl test,l thel endl orl bothl endsl ofl thel tampingl rodl mustl bel
_____.
Answer:
Roundedl tol al hemisphericall tip
Q:l Thel samplel ofl concretel forl usel inl makingl thel slumpl testl mustl bel obtainedl inl accordancel withl ASTMl Standardl _____.
Answer:
C172,l Standardl Practicel forl Samplingl Freshlyl Mixedl Concrete
Q:l Thel slumpl moldl shouldl bel inl al dryl conditionl beforel beginningl thel test.l Truel orl False?
Answer:
False
Q:l Thel surfacel onl whichl thel slumpl moldl willl bel placedl mustl bel _____.
Answer:
Flat,l level,l moist,l nonabsorbent,l andl freel ofl vibration
Q:l Thel slumpl moldl isl filledl inl _____l layers.
Answer:
3
Q:l Eachl layerl shouldl filll approximatelyl _____l thel volumel ofl thel mold.
Answer:
One-third 3 / 4
Q:l Thel approximatel concretel depthl (inl verticall distance)l afterl placingl thel firstl layerl isl _____,l andl thel secondl layerl isl _____.
Answer:
2⅝l in.l [70l mm],l 6⅛l in.l [160l mm]
Q:l Whatl isl thel specifiedl numberl ofl roddingsl forl eachl layer?
Answer:
25
Q:l Howl deepl shouldl thel tampingl rodl penetratel intol eachl layer?
Answer:
Rodl eachl layerl throughoutl itsl depth;l onl thel secondl andl finall layers,l thel rodl shouldl penetratel intol thel previousl layerl approximatelyl 1l in.l [25l mm]
Q:l Whenl roddingl thel bottoml layer,l thel tampingl rodl mustl bel _____l tol uniformlyl distributel thel strokes.
Answer:
Slightlyl inclined
Q:l Whatl mustl bel donel ifl thel concretel dropsl belowl thel topl ofl thel slumpl moldl whilel thel topl layerl isl beingl rodded?
Answer:
Addl additionall concretel tol keepl anl excessl ofl concretel abovel thel topl ofl thel moldl atl alll times
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