UNIVERSITY OF PERPETUAL HELP SYSTEM LAGUNA
COLLEGE OF ENGINEERING, ARCHITECTURE AND AVIATION
STANDARD TEST METHOD FOR TEMPERATURE OF FRESHLY MIXED
HYDRAULIC CEMENT CONCRETE
ASTM C1064
LABORATORY REPORT NO. 5
MENDOZA, TRISHA NICOLE B.
DATE PREPARED: 04-13-23
E2X
DATE SUBMITTED: 04-14-23
ENGR. SHIEMKA P. JUSON, CE, RMP
INSTRUCTOR
Objective:

To determine the temperature of freshly mixed hydraulic cement concrete
Apparatus and Materials:

Thermometer
Setup of Apparatus
Procedure:
1. Position the thermometer such that it is submerged into the concrete by a minimum
of three inches. Ensure also that the thermometer is surrounded by at least three
inches of concrete at all sides. Close up the void left by the placement of the
thermometer by gently pressing the concrete around the thermometer at the
surface of the concrete to prevent ambient air temperature from affecting the
reading.
2. Leave the thermometer on the concrete for at least 2 minutes but not more than 5
minutes. Do not remove the thermometer when reading the temperature.
3. Record the temperatures you have observed for 3 trials.
Results and Discussion:
A3
B3
C3
Initial Temperature
0°C
0°C
0°C
Final Temperature
17°C
19°C
31°C
Conclusion
I have learned a lot and had many new experiences as a result of conducting
the experiment of creating real concrete and curing it. Our group was able to create
cylinder concretes in accordance with ASTM C31, which establishes uniform
guidelines for producing, curing, preserving, and transporting concrete test
specimens under field conditions
Then, to create concrete molds, we mixed ingredients in a 1:2:4 ratio, using
1 part cement, 2 parts sand or fine aggregates, and 4 parts gravels or coarse
aggregates. After constructing it, we attempted to reach the three concrete molds'
respective temperatures of 17°C, 19°C, and 31°C after allowing them to rest for five
(5) minutes. We then began to wait for the concrete cylinders to harden before
beginning the process of curing it by soaking them in a bucket of water. This is done
to ensure that we can keep the concrete at a suitable temperature and moisture
level for a long enough period of time to allow for hydration to provide the necessary
concrete qualities. Only when concrete is adequately cured will its full strength and
durability potential manifest.
Recommendation
It is crucial to follow established standards such as ASTM or ACI when making and
curing concrete test specimens in the field. These standards provide guidelines for the
correct procedures and ensure that results are accurate and reliable. Use proper
equipment: Using proper equipment such as a concrete mixer, molds, and curing
boxes is essential for ensuring the quality of the test specimens. The equipment
should be regularly maintained and calibrated to ensure accurate results. Proper
mixing and casting: The mixing and casting of the concrete should be done carefully
and consistently to ensure uniformity of the test specimens. The molds should be
filled in layers and vibrated to remove any air pockets.
The curing conditions for the test specimens should be carefully controlled to
ensure that the specimens achieve the required strength. The curing conditions
should follow established standards and ensure that the specimens are not exposed
to conditions that could affect their strength and durability. Proper handling and
testing: The test specimens should be handled carefully during transportation and
testing. The testing should be done using calibrated equipment and following
established procedures to ensure accurate results.
By following these recommendations, the quality of the concrete used in
construction projects can be assessed accurately, ensuring that the structures built
are safe and durable.