ACI Concrete Field-Testing Technician- Grade I Questions 100% Correct Answers Verified Latest 2024 Version

ACI Concrete Field-Testing Technician- Grade I Questions | 100% Correct Answers | Verified | Latest 2024 Version Section 1: Temperature of Freshly Mixed Hydraulic-Cement Concrete - C1064 The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of _____ into the freshly mixed concrete. - 3 inches The temperature measuring device shall be capable of accurately measuring temperature of freshly mixed concrete to _____, throughout a range of _____. - +/- 1 °F 30 °F to 120 °F The temperature measuring device shall be verified _____, or whenever there is a question of _____. - Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - True The temperature of concrete may be measured in a wall form. True of False - True A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature. True of False? - False What must be done to the sample container prior to sampling the concrete? - Dampen (with water) What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete. - Gently press the concrete around the temperature measuring device at the surface of the concreteHow long must the temperature measuring device remain in the freshly mixed concrete? - At least 2 minutes but not more than 5 minutes After the temperature of the concrete is read, what is required? - Reporting of temperature The temperature of concrete is reported to the nearest _____. - 1 °F According to ASTM C1064, what is one reason to take the temperature of concrete? - Verify conformance to a specified requirement for temperature of concrete A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True of False? - False Section 2: Sampling Freshly Mixed Concrete - C172 The sample of concrete used for temperature determination must be rodded 25 times. True or False? - False Sampling by this method is required when tests are to be made to determine _____ with specification requirements. - Compliance This method covers sampling from four types of mixtures which are _____, _____, _____, _____, and _____. - Stationary mixers, Paving mixers, Revolving Drum mixers Continuous mixers, and Open Top mixers The maximum allowable time between obtaining the first and final portions of a composite sample is _____ minutes. - 15Portions of a composite sample shall be thoroughly remixed bfore beginning tests on the sample. True of False? - True The maximum elapsed time allowed between obtaining the final portion of the composite sample and beginning the tests for slump, temperature, and air content is _____ minutes. - 5 The molding of strength test specimens shall begin within _____ minutes after fabricating the composite sample. - 15 The concrete sample must be protected from coACI Concrete Field-Testing Technician- Grade I Questions | 100% Correct Answers | Verified | Latest 2024 Version Section 1: Temperature of Freshly Mixed Hydraulic-Cement Concrete - C1064 The end of the temperature sensing portion of the temperature measuring device is submerged a minimum of _____ into the freshly mixed concrete. - 3 inches The temperature measuring device shall be capable of accurately measuring temperature of freshly mixed concrete to _____, throughout a range of _____. - +/- 1 °F 30 °F to 120 °F The temperature measuring device shall be verified _____, or whenever there is a question of _____. - Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - True The temperature of concrete may be measured in a wall form. True of False - True A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature. True of False? - False What must be done to the sample container prior to sampling the concrete? - Dampen (with water) What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete. - Gently press the concrete around the temperature measuring device at the surface of the concreteHow long must the temperature measuring device remain in the freshly mixed concrete? - At least 2 minutes but not more than 5 minutes After the temperature of the concrete is read, what is required? - Reporting of temperature The temperature of concrete is reported to the nearest _____. - 1 °F According to ASTM C1064, what is one reason to take the temperature of concrete? - Verify conformance to a specified requirement for temperature of concrete A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True of False? - False Section 2: Sampling Freshly Mixed Concrete - C172 The sample of concrete used for temperature determination must be rodded 25 times. True or False? - False Sampling by this method is required when tests are to be made to determine _____ with specification requirements. - Compliance This method covers sampling from four types of mixtures which are _____, _____, _____, _____, and _____. - Stationary mixers, Paving mixers, Revolving Drum mixers Continuous mixers, and Open Top mixers The maximum allowable time between obtaining the first and final portions of a composite sample is _____ minutes. - 15Portions of a composite sample shall be thoroughly remixed bfore beginning tests on the sample. True of False? - True The maximum elapsed time allowed between obtaining the final portion of the composite sample and beginning the tests for slump, temperature, and air content is _____ minutes. - 5 The molding of strength test specimens shall begin within _____ minutes after fabricating the composite sample. - 15 The concrete sample must be protected from co