ACI Certification Concrete Field Testing Tech Grade 1 Questions and Answers 100% Verified

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. - Answer- 0.5 C (1 F), 0-50 C (30-120 F) The temperature measuring device shall be verified ______________, or whenever there is a question of ________________. - Answer- annually, accuracy the temperature of concrete may be measured in a wheelbarrow? true or false - Answer- true the temperature of concrete may be measuring in a wall form? true or false - Answer- true A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature? true or false - Answer- false what must be done to the sample container prior to sampling the concrete? - Answer- dampen What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete? - Answer- gently press concrete around tmd How long must the temperature measuring device remain in the freshly mixed concrete? - Answer- 2-5 min After the temperature of the concrete is read, what is then required? - Answer- report the temp The temperature of the concrete is reported to the nearest ________________. - Answer- 0.5 C (1 F) According to Test Method C1064/1064M, what is one reason to take the temperature of concrete? - Answer- verify conformance to specified requirements A maximum temperature of freshly mixed concrete is specified in C1064/1064M. true or false - Answer- false The sample of concrete used for temperature determination must be rodded 25 times. true or false - Answer- false C143C143M - Answer- test method testing slump The slump test is applicable to plastic concrete with a maximum size aggregate of ______ - Answer- 1.5 inches (37.5 mm) When the concrete contains aggregate larger than allowed for the slump test, the large aggregate must - Answer- wet-sieved (over 37.5 mm sieve) The mold for making the slump test is in the shape of a _______ - Answer- frustum of a cone The height of a slump mold is_______ - Answer- 12 in (300 mm) The interior surface of the slump mold is allowed to have minor irregularities. True or false? - Answer- false