ACI CONCRETE FIELD TESTING
TECHNICIAN- GRADE I
1. The sensor of the temperature measuring device shall be submerged a min-
imum of in. [ mm] into the freshly mixed concrete.
Answer 3 in. [75 mm]
2. The temperature measuring device shall have a capacity of measuring tem-
perature of freshly mixed concrete to +- degrees F [+- C] throughout
a range of .
Answer 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C]
3. The temperature measuring device shall be calibrated , or whenever
there is a question of .
Answer Annually, accuracy
4. The temperature of concrete may be measured in a wheelbarrow. True or
False?
Answer True
,5. The temperature of concrete may be measured in a wall form. True of False-
Answer True
6. A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temperature. True of False?
Answer False
7. What must be done to the sample container prior to sampling the concrete?-
Answer Dampen (with water)
8. What must be done to the concrete surrounding the temperature measuring
device 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
9. How long must the temperature measuring device remain in the freshly
mixed concrete?
,Answer At least 2 minutes but not more than 5 minutes
10. After the temperature of the concrete is read, what is required?
Answer Reporting of temperature
11. The temperature of concrete is reported to the nearest degrees F [
C]
Answer 1 degree F [0.5 C]
12. According to ASTM C1064, what is one reason to take the temperature of
concrete?
Answer Verify conformance to a specified requirement for temperature of concrete
13. A maximum temperature of freshly mixed concrete is specified in ASTM
C1064. True of False?
Answer False
14. The sample of concrete used for temperature determination must be rodded
25 times. True or False?
Answer False
, 15. Sampling by this method is required when tests are to be made to determine
with specification requirements.
Answer Compliance
TECHNICIAN- GRADE I
1. The sensor of the temperature measuring device shall be submerged a min-
imum of in. [ mm] into the freshly mixed concrete.
Answer 3 in. [75 mm]
2. The temperature measuring device shall have a capacity of measuring tem-
perature of freshly mixed concrete to +- degrees F [+- C] throughout
a range of .
Answer 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C]
3. The temperature measuring device shall be calibrated , or whenever
there is a question of .
Answer Annually, accuracy
4. The temperature of concrete may be measured in a wheelbarrow. True or
False?
Answer True
,5. The temperature of concrete may be measured in a wall form. True of False-
Answer True
6. A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temperature. True of False?
Answer False
7. What must be done to the sample container prior to sampling the concrete?-
Answer Dampen (with water)
8. What must be done to the concrete surrounding the temperature measuring
device 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
9. How long must the temperature measuring device remain in the freshly
mixed concrete?
,Answer At least 2 minutes but not more than 5 minutes
10. After the temperature of the concrete is read, what is required?
Answer Reporting of temperature
11. The temperature of concrete is reported to the nearest degrees F [
C]
Answer 1 degree F [0.5 C]
12. According to ASTM C1064, what is one reason to take the temperature of
concrete?
Answer Verify conformance to a specified requirement for temperature of concrete
13. A maximum temperature of freshly mixed concrete is specified in ASTM
C1064. True of False?
Answer False
14. The sample of concrete used for temperature determination must be rodded
25 times. True or False?
Answer False
, 15. Sampling by this method is required when tests are to be made to determine
with specification requirements.
Answer Compliance
