ACI Concrete Field-Testing Technician Grade I Exam Questions &
Answers | 100% Verified Solutions | Latest Updated Study Guide |
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Q1. Start Molding Specimens For Strength Tests Within 30 Minutes After Fabricating The
Composite Sample.
A. True
B. False
ANS>> B. False
Astm C172 -Para (4.1.2) - Start Molding.
Specimens For Strength Tests Within 15 Min After Fabricating The
Composite Sample.
Q2. The Maximum Allowable Time Between Obtaining The First And Last Portions Of The
Composite Sample May Not Exceed 5 Minutes.
A. True
B. False
ANS>> B. False
Astm C172 - Para (4.1)- The Elapsed Time Shall Not Exceed 15 Min. Between Obtaining The First
And Final Portions Of The Composite Sample.
,Q3. The Composite Concrete Sample Must Be Protected From Sun, Wind, Contamination And
Rapid Evaporation.
A. True
B. False
ANS>> A. True
Astm C172 - Para (4.1.2)
Q4. If The Concrete Contains Aggregates Larger Than Those That Are Appropriate For A Size Of
Mold Or Equipment Used, The Sample Should Be Wet Sieved Before Making The Test.
A. True
B. False
ANS>> A. True
Astm C172- Para (6.1)
Q5. The Composite Sample Should Not Be Remixed Before Beginning Any Tests.
A. True
B. False
ANS>> B. False
,Astm C172-Para (4.1.1) -The Sample Shall Be Combined And Remixed With A Shovel The
Minimum Amount Necessary To Ensure Uniformity And Compliance With The Maximum Time
Limits
Q6. Sampling Should Normally Be Performed, As The Concrete Is Discharged From The Mixer.
A. True
B. False
ANS>> B. False
Astm C172-Para (5). Note 2—Sampling Should Normally Be Performed As The Concrete Is
Delivered From The Mixer.
To The Conveying Vehicle Used To Transport The
Concrete To The Forms; However, Specifications May Require Other Points Of Sampling, Such As
The Discharge Of A Concrete Pump.
Q7. Astm Method C172 Includes Sampling From Stationary Mixers, Paving Mixers, Truck Mixers,
Agitators, And Non-Agitating Equipment.
A. True
B. False
ANS>> A. True
Astm C172- Para (1.1)
, Q8. After Sampling Is Completed, Start The Tests For Slump And Air Content Within:
A. 2 ½ Minutes
B. 10 Minutes
C. 15 Minutes
D. None Of The Above
ANS>> D. None Of The Above
Astm C172- Para (4.1.2) Start Tests For Slump, Temperature, And Air Content Within 5 Min After
Obtaining The Final Portion Of The Composite Sample.
Q9. In Any Case, Do Not Obtain Samples Until:
A. All The Water And Admixtures Have Been Added To The Concrete
B. 200 Revolutions Of The Drum Have Been Obtained
C. ½ Of The Water Has Been Added
D. None Of The Above
ANS>> A. All The Water And Admixtures Have Been Added To The Concrete.
Astm C172- Para (5.2.3). In Any Case Do Not Obtain Samples Until After All Of The Water Has
Been Added To The Mixer.
Answers | 100% Verified Solutions | Latest Updated Study Guide |
Pass Guaranteed Prep Bundle
Q1. Start Molding Specimens For Strength Tests Within 30 Minutes After Fabricating The
Composite Sample.
A. True
B. False
ANS>> B. False
Astm C172 -Para (4.1.2) - Start Molding.
Specimens For Strength Tests Within 15 Min After Fabricating The
Composite Sample.
Q2. The Maximum Allowable Time Between Obtaining The First And Last Portions Of The
Composite Sample May Not Exceed 5 Minutes.
A. True
B. False
ANS>> B. False
Astm C172 - Para (4.1)- The Elapsed Time Shall Not Exceed 15 Min. Between Obtaining The First
And Final Portions Of The Composite Sample.
,Q3. The Composite Concrete Sample Must Be Protected From Sun, Wind, Contamination And
Rapid Evaporation.
A. True
B. False
ANS>> A. True
Astm C172 - Para (4.1.2)
Q4. If The Concrete Contains Aggregates Larger Than Those That Are Appropriate For A Size Of
Mold Or Equipment Used, The Sample Should Be Wet Sieved Before Making The Test.
A. True
B. False
ANS>> A. True
Astm C172- Para (6.1)
Q5. The Composite Sample Should Not Be Remixed Before Beginning Any Tests.
A. True
B. False
ANS>> B. False
,Astm C172-Para (4.1.1) -The Sample Shall Be Combined And Remixed With A Shovel The
Minimum Amount Necessary To Ensure Uniformity And Compliance With The Maximum Time
Limits
Q6. Sampling Should Normally Be Performed, As The Concrete Is Discharged From The Mixer.
A. True
B. False
ANS>> B. False
Astm C172-Para (5). Note 2—Sampling Should Normally Be Performed As The Concrete Is
Delivered From The Mixer.
To The Conveying Vehicle Used To Transport The
Concrete To The Forms; However, Specifications May Require Other Points Of Sampling, Such As
The Discharge Of A Concrete Pump.
Q7. Astm Method C172 Includes Sampling From Stationary Mixers, Paving Mixers, Truck Mixers,
Agitators, And Non-Agitating Equipment.
A. True
B. False
ANS>> A. True
Astm C172- Para (1.1)
, Q8. After Sampling Is Completed, Start The Tests For Slump And Air Content Within:
A. 2 ½ Minutes
B. 10 Minutes
C. 15 Minutes
D. None Of The Above
ANS>> D. None Of The Above
Astm C172- Para (4.1.2) Start Tests For Slump, Temperature, And Air Content Within 5 Min After
Obtaining The Final Portion Of The Composite Sample.
Q9. In Any Case, Do Not Obtain Samples Until:
A. All The Water And Admixtures Have Been Added To The Concrete
B. 200 Revolutions Of The Drum Have Been Obtained
C. ½ Of The Water Has Been Added
D. None Of The Above
ANS>> A. All The Water And Admixtures Have Been Added To The Concrete.
Astm C172- Para (5.2.3). In Any Case Do Not Obtain Samples Until After All Of The Water Has
Been Added To The Mixer.
