Concrete Field Testing Technician Correct Questions & Solutions.

C1064-The end of the temperature sensing portion of the thermometer is submerged a minimum of ___ into the freshly mixed concrete - ANSWER 3 inches Temperature of thermometer shall be capable of measuring the temperature of freshly mixed concrete to _____ throughout a range of _________. - ANSWER 0.5 degrees C, 0 degrees C to 50 degrees C; 1F, 30 to 120 F The thermometer shall be verified ___ or whenever there is a question of ____. - ANSWER annually, accuracy The temperature of concrete may be measured in a wheelbarrow - ANSWER True The temperature of concrete may be measured in a wall form - ANSWER True A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature - ANSWER False What must be done to the sample container prior to sampling the concrete? - ANSWER Dampened with water What must be done to the concrete surrounding the thermometer after the device is submerged in the fresh concrete - ANSWER Gently press the concrete around the temperature measuring device at the surface of the concrete How long must the thermometer remain in the freshly mixed concrete? - ANSWER 2-5 minutes After the temperature of the concrete is read, what is then required? - ANSWER Reporting of the temperature The temperature of the concrete is reported to the nearest ___. - ANSWER 0.5 degrees C, 1F According to the Test Method C1064/1C1064M, what is one reason to take the temperature of concrete? - ANSWER Verify conformance to a specified requirement for temperature of concrete A maximum temperature of freshly mixed concrete is specified in Test Method C10