Q3. Three concrete mixes with the same ingredients, except the amount of mixing water, and their slump values were obtained. Three 100 mm * 200 mm concrete cylinders were prepared for each mix. The cylinders were cured for 7 days and then tested for compressive strength. The test results are as shown in the table below. Assume that the aggregate was at the saturated surface-dry condition before adding mixing water. It is required to do the following: a. Plot the relationship between slump and amount of mixing water for all mixes Comment on the effect of increasing the amount of water on workability. b. Determine the compressive strength of each cylinder after 7 days. c. Determine the average compressive strength of each mix after 7 days. d. Using the Figure below, estimate the compressive strength after 28 days (fc) for each mix. e. Determine the w/c ratio for each mix. Plot the average fc values versus w/c ratios for all mixes. Comment on the effect of increasing the w/c ratio on the compressive strength

Q3. Three concrete mixes with the same ingredients, except the amount of mixing water, and their slump values were obtained. Three 100 mm * 200 mm concrete cylinders were prepared for each mix. The cylinders were cured for 7 days and then tested for compressive strength. The test results are as shown in the table below. Assume that the aggregate was at the saturated surface-dry condition before adding mixing water. It is required to do the following: a. Plot the relationship between slump and amount of mixing water for all mixes Comment on the effect of increasing the amount of water on workability. b. Determine the compressive strength of each cylinder after 7 days. c. Determine the average compressive strength of each mix after 7 days. d. Using the Figure below, estimate the compressive strength after 28 days (fc) for each mix. e. Determine the w/c ratio for each mix. Plot the average fc values versus w/c ratios for all mixes. Comment on the effect of increasing the w/c ratio on the compressive strength

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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