ACI Field Grade 1 Practice Test 2024

ACI Field Grade 1 Practice Test 2024 The temperature measuring device shall be cable of accurately measuring the temperature of freshly mixed concrete to 1°F throught a range of____________________________. -Answer-30 - 120°F It is acceptable to measure the temperature of freshly mixed concrete in the forms provided? -Answer-The sensor of the temperature measuring device has at least 3 in. of cover in all directions. Composite samples are required even if the only purpose for obtaining the sample is to determine temperature. -Answer-False The temperature measuring device is left in the freshly mixed concrete for at least _______________ but not more than 5 minutes. -Answer-2 minutes Test Method C1064/C1064M specifies a maximum temperature of freshly mixed concrete. -Answer-False The elapsed time between obtaining the first and final portions of a composite sample shall not exceed ____________________. -Answer-15 minutes Individual samples shall be combined and remixed with a shovel the minimum amount necessary to ensure uniformity. -Answer-True The following test must be started within 5 minutes after obtaining the final portion of the composite sample: -Answer-Slump, Temperature, Air Content The concrete sample must be protected from? -Answer-Contamination & Evaporation When strength specimens are to be made, the minimum sample size is __________________. -Answer-1.0 ft3 Portions of the composite should be taken from the _______________of the batch discharge. -Answer-Middle A composite sample taken from a paving mixer consists of _______________ individual samples taken from different portions of the pile. -Answer-Five The process of removing aggregate larger than a designated size from the fresh concrete by sieving it on a sieve of the designated size is know as? -Answer-Wet Sieving The slump test is considered applicable to plastic concrete having a coarse aggregate up to ____________________. -Answer-1 1/2 in. The height of the slump mold is_________________. -Answer-12 inches The interior surface of the slump mold shall be relatively smooth and free from projections. -Answer-True The tamping rod used for the slump test shall have a minimum length of ____________ and a maximum length of _______________. -Answer-16 in. & 24 in. The slump mold is filled in ___________ layers of _______________. -Answer-3, equal volume