ACI Certification Section 7 questions with correct answers

making, curing, protecting, transporting Answer Practice C31/C31m gives standardized requirements for ______, _________ , ________ and _________. 5/8 plus or minus 1/16" Answer For cylinders with a diameter of 150 mm [6 in] or greater, the tamping rod must be a round, straight steel rod with a diameter of ... 9,000 vibrations per minute Answer The minimum frequency of an internal vibrator used in this procedure is ... metal pan, wheelbarrow, clean nonabsorbent mixing board Answer The container for obtaining the concrete sample used in this procedure can be a ... 2 inches Answer A 150 by 300 mm [6 by 12 in.] cylinder mold can be used for concrete containing aggregate with particles not exceeding _________ in size, without the need for wet sieving the concrete. C172 Answer The sample of concrete used in molding test specimens must be obtained in accordance with what ASTM practice? slump, air content, temperature Answer When strength specimens are to be made, what three other tests must be made? False Answer After molding test specimens, you should wait two hours before