Copy of Engineering materials lab 4 (1)
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School
New Jersey Institute Of Technology *
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Course
200
Subject
Mechanical Engineering
Date
Dec 6, 2023
Type
Pages
3
Uploaded by ConnorEplop
Connor Eichhorn
CGN 3501c-001
Fall 2023
Instructor: Olfat Sarhang Zadeh
TA: Raja Chandrika Ravella
Lab #4:
Splitting tensile strength of Concrete
Date Assigned: oct. 18th, 2023
Date of Submission: oct. 25th, 2023
Objective:
To determine the tensile strength of concrete using cylindrical
specimens.
Introduction:
The tensile strength of concrete is the amount of weight able
to be applied from a compression testing machine until it splits. The main
objective of doing this on a concrete cylinder is to understand the strength
of the concrete you have made and using a cylinder helps to keep
symmetry to get a more accurate testing.
Apparatus / Material Used:
Concrete cylinder, compression testing
machine, two 1/8-in.-thick plywood bearing strips
Procedure:
The procedure began with determining the weight and
compressive strength of the concrete cylindrical specimens. Then, we drew
lines on each end of the specimen. Next, we measured the dimensions of
the cylinder. Place the plywood strips on each side of the specimen. Then,
place the specimen with plywood into a compression machine. Then, apply
the load at a rate of 100-200 psi/min until failure. Lastly, record max load at
failure and splitting tensile strength.
Results:
Max load at failure: 15,320 lbs.
30640/(3.14x20x9.5) = 596.6 lbs Splitting tensile strength
Conclusion:
During this lab, we found that the max load at failure was
15,320 lbs. The splitting tensile strength was calculated from the max load
and came out to be 596.6 lbs.
Comments:
This lab was very similar to the one before. It is very fun
watching and learning how to use the concrete compression machine and
hope to learn more in in the future.
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