Core test on concrete.docx

# Compressive strength1425x 179 255mpa comp strength of

• Lab Report
• 8

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Corr. Compressive strength=14.25x 1.79 = 25.5MPa Comp. strength of cube = 25.5 x 1.25 = 31.9 MPa 7 5. Conclusion the results of the experiment : 1 Compressive strength of the core = 25.5 MPa 2 Compressive strength of the cube = 31.9 MPa. We conclude that the diameter of the cylinder should be at least 3 times the maximum aggregate size and this is true for this experiment. The larger the sample, the more accurate the results would be. To obtain accurate results, the strength value should be multiplied by an age factor and sample size factor in addition to the L\d factor. Since this is not done in this

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experiment the results are not highly accurate but could be easily modified to obtain an accurate strength value. The core test is considered the last step for determining the acceptance of the concrete, and the core we tests should have at least strength of 85 % of the concrete strength. The excess void ratio in the core is zero. 6.References 8
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• Fall '16
• Civil Engineering, Compressive strength, Physical compression, Awad 1141427, Mohammmed Sammar

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