Aci slump test - Study guides, Class notes & Summaries

ACI Certification ExamASTM C172 covers sampling from stationary, paving and truck mixers, and from agitating and non-agitating equipment used to transport central-mixed concrete. - correct answer True When the concrete contains large aggregate, the testing technician should wet-sieve the sample before making unit weight tests for use in yield computations. - correct answer False Samples should be taken before 10% or after 90% of the batch has been discharged. - correct answer False Samp...

ACI Certification Concrete Field Testing Tech Grade 1 Questions and Answers 100% Verified The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of ___________ into FRESHLY mixed concrete. - Answer- 75 mm (3 in) The temperature measuring device shall be capable of accurately measuring the temperature of freshly mixed concrete to _______________ throughout a range of ____________ C to _____________ C and _____________ F to ___________ F. - An...

ACI Test Questions and Answers Guaranteed A+ The total time allowed between obtaining the first and final portions of a composite sample is 15 minutes When it is necessary to wet sieve the concrete sample, wet sieving should be performed after the individual samples are remixed into a composite sample (T or F) F Tests for slump, temperature, and air content must begin within ______ minutes after obtaining the composite sample 5 minutes Begin molding test specimens within...

ACI Certification Section 3 | Questions and Correct Answers | Latest Update 2024/2025 1.5 inches - Answer -The slump test is applicable to plastic concrete with a maximum size aggregate of ... wet sieved over a 1.5" sieve - Answer -When the concrete contains aggregate larger than allowed for the slump test, the large aggregate must be ... frustum of a cone - Answer -The mold for making the slump test is in the shape of ... 12 inches - Answer -The height of the slump mold is ... False...

2. T/F: When the concrete contains large aggregate, the testing technician should wet-sieve the sample before making unit weight tests for use in yield computations.Answer - False 4. T/F: Samples smaller than 28L (1 .) are allowed on routine air content, temperature, and slump tests.Answer - True 7. How do you regulate the rate of discharge of the batch from the revolving truck drum mixer or agitator?Answer - By the rate of revolution of the drum 10. While the technician is checking ...

ACI Exam Practice Questions & Answers (RATED A)ACI Exam Practice Questions & Answers (RATED A)ACI Exam Practice Questions & Answers (RATED A)ACI Exam Practice Questions & Answers (RATED A)ACI Exam Practice Questions & Answers (RATED A) 60-80*F - ANSWER For normal strength concretes, what temperature range must be maintained for test cylinders during initial curing? 5 minutes - ANSWER Tests for the slump and air content must be started within ____ after obtaining the final portion of the comp...

ACI- Concrete Field-Testing Technician - Grade 1 Exam Questions and Answers 2024 Q1. Start molding specimens for strength tests within 30 minutes after fabricating the composite sample. A. True B. False - Answer-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. Fals...

ACI Concrete Field-Testing Technician- Grade I Questions and Answers Fully solved 2024 The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [_____mm] into the freshly mixed concrete. 3 in. [75 mm] The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concrete to +- _____ degrees F [+- _____ C] throughout a range of _____. 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C] The temperature measurin...

ACI Written Exam Questions & Revised Correct Answers Updated False. Relatively dense - CORRECT ANS : The method of determining air content of concrete containing lightweight aggregate is the pressure method True - CORRECT ANS : Is the following statement true or false? When making a test cylinder from concrete being used in construction, the field technician must also measure the slump of the concrete. Disregard the test and retest on another portion of the sample. - CORRECT ANS ...

ACI Concrete Testing Questions and Answers Graded A+ ASTM C31 Making and curing concrete test specimens in the field ASTM C231 Concrete Air Content Test - Pressure Method ASTM C173 Concrete Air Content Test - Volume Method ASTM C172 Sampling Fresh Concrete ASTM C143 Standard Test Method for Slump of Hydraulic-Cement Concrete ASTM C138 Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete ASTM C1064 Stand...