3. A concrete mix includes the following ingredients per cubic foot: (14 pts.) Cement 25 Ibs. Water I1 Ibs. No Admixture Table shows possible changes that can be made to the mix ingredients. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease, or approximately the same. What WIIII Happen? Ultimate Compressive Strength Cement (Ib) Water (Ib) Admixture Workability 25 15 None 28 11 None 25 11 Water reducer Water reducer Superplasticizer 25 8. 25 11 25 11 Air entrainer 25 11 Accelerator
3. A concrete mix includes the following ingredients per cubic foot: (14 pts.) Cement 25 Ibs. Water I1 Ibs. No Admixture Table shows possible changes that can be made to the mix ingredients. Indicate in the appropriate boxes in the table what will happen in each case for the workability and the ultimate compressive strength as increase, decrease, or approximately the same. What WIIII Happen? Ultimate Compressive Strength Cement (Ib) Water (Ib) Admixture Workability 25 15 None 28 11 None 25 11 Water reducer Water reducer Superplasticizer 25 8. 25 11 25 11 Air entrainer 25 11 Accelerator
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:3. A concrete mix includes the following ingredients per cubic foot: (14 pts.)
= 25 lbs.
= 11 lbs.
Cement
Water
No Admixture
Table shows possible changes that can be made to the mix ingredients. Indicate in the
appropriate boxes in the table what will happen in each case for the workability and the
ultimate compressive strength as increase, decrease, or approximately the same.
What WIlII Happen?
Ultimate Compressive
Strength
Cement (Ib)
Water (Ib)
Admixture
Workablity
None
25
28
15
11
None
Water reducer
Water reducer
Superplasticizer
Air entrainer
Accelerator
25
11
25
8.
25
11
25
11
25
11
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