TABLE P6.16 Mix w/c Ratio Cube No. Maximum Compressive Average Compressive Strength (MPa) No. Load (kN) Strength (MPa) 1 79.4 1 0.50 80.1 3 81.9 1 74.7 0.55 2 74.5 3 72.5 1 65.8 69.3 3 0.60 3 71.2 2. 2.
TABLE P6.16 Mix w/c Ratio Cube No. Maximum Compressive Average Compressive Strength (MPa) No. Load (kN) Strength (MPa) 1 79.4 1 0.50 80.1 3 81.9 1 74.7 0.55 2 74.5 3 72.5 1 65.8 69.3 3 0.60 3 71.2 2. 2.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Students in the materials class prepared three mortar mixes with water to
cement ratios of 0.50, 0.55, and 0.60. Three 50-mm mortar cubes were pre-
pared for each mix. The cubes were cured for 7 days and then tested for com-
pressive strength. The test results were as shown in Table P6.16.Determine the following:
a. The compressive strength of each cube.
b. The average compressive strength for each mix.
c. Plot the average compressive strength versus w/c ratios for all mixes.
d. Comment on the effect of increasing w/c ratio on the compressive strength
of the cubes.
![TABLE P6.16
Mix
w/c
Ratio Cube No.
Maximum
Compressive
Average Compressive
Strength (MPa)
No.
Load (kN) Strength (MPa)
1
79.4
1
0.50
80.1
3
81.9
1
74.7
0.55
2
74.5
3
72.5
1
65.8
69.3
3
0.60
3
71.2
2.
2.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3e1a6d4f-7428-49e7-a7f4-20f684ccc03e%2F7871a4ca-ec68-4a6b-b99d-bc037297bf57%2Fgteg2zh_processed.png&w=3840&q=75)
Transcribed Image Text:TABLE P6.16
Mix
w/c
Ratio Cube No.
Maximum
Compressive
Average Compressive
Strength (MPa)
No.
Load (kN) Strength (MPa)
1
79.4
1
0.50
80.1
3
81.9
1
74.7
0.55
2
74.5
3
72.5
1
65.8
69.3
3
0.60
3
71.2
2.
2.
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