Q3) In order to evaluate the suitability of nonpotable water available at the job site for mixing concrete, six standard mortar cubes were made using that water and six others using potable water. The cubes were tested for compressive strength after 7 days of curing and produced the loads to failure (in pounds) shown in Table: Cubes Made with Nonpotable Water Cubes Made with Potable Water 14,530 16,530 15,820 14,160 16,100 15,870 14,380 16,820 17,920 15,690 18,820 16,720 Based on these results only, would you accept that water for mixing concrete according to ASTM C94?
Q3) In order to evaluate the suitability of nonpotable water available at the job site for mixing concrete, six standard mortar cubes were made using that water and six others using potable water. The cubes were tested for compressive strength after 7 days of curing and produced the loads to failure (in pounds) shown in Table: Cubes Made with Nonpotable Water Cubes Made with Potable Water 14,530 16,530 15,820 14,160 16,100 15,870 14,380 16,820 17,920 15,690 18,820 16,720 Based on these results only, would you accept that water for mixing concrete according to ASTM C94?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Answer question 3
Transcribed Image Text:Q1) Define the C-S-H phase of cement paste.
Q2) Discuss the effect of water-cement ratio on the quality of
hardened concrete. Explain why this effect happens.
Q3) In order to evaluate the suitability of nonpotable water
available at the job site for mixing concrete, six standard mortar
cubes were made using that water and six others using potable
water. The cubes were tested for compressive strength after 7
days of curing and produced the loads to failure (in pounds)
shown in Table:
Cubes Made with Nonpotable Water Cubes Made with Potable Water
14,530
16,530
16,820
17,920
15,690
18,820
16,720
15,820
14,160
16,100
15,870
14,380
Based on these results only, would you accept that water for
mixing concrete according to ASTM C94?
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VIEWStep 4: average compressive strength for potable water
VIEWStep 5: 90 percent of the compressive strength of the samples of potable water
VIEWStep 6: As per ASTM C94
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