6.31 A concrete mix includes the following ingredients per cubic foot: 5463 a. Cement = 25 lb b. Water 11 lb c. No admixture Table P6.31 shows possible changes that can be made to the mix ingredi- ents. 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. TABLE P6.31 = Cement (lb) 25 28 25 25 25 25 25 granula VID00 Water (lb) 15 11 11 8 11 11 11 Admixture None None Water reducer Water reducer Superplasticizer Air entrainer Accelerator xe pola What Will Happen? Workability Ultimate Compressive Strength
6.31 A concrete mix includes the following ingredients per cubic foot: 5463 a. Cement = 25 lb b. Water 11 lb c. No admixture Table P6.31 shows possible changes that can be made to the mix ingredi- ents. 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. TABLE P6.31 = Cement (lb) 25 28 25 25 25 25 25 granula VID00 Water (lb) 15 11 11 8 11 11 11 Admixture None None Water reducer Water reducer Superplasticizer Air entrainer Accelerator xe pola What Will Happen? Workability Ultimate Compressive Strength
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:**Concrete Mix Composition and Effects on Workability and Strength**
*Concrete Mix Ingredients (per cubic foot):*
- **Cement:** 25 lb
- **Water:** 11 lb
- **No Admixture**
**Table P6.31 Overview**
This table outlines possible changes that can be made to the mix ingredients. It indicates what will happen in each case regarding workability and ultimate compressive strength, categorized as increase, decrease, or approximately the same.
| Cement (lb) | Water (lb) | Admixture | Workability | Ultimate Compressive Strength |
|-------------|------------|-------------------|-------------|------------------------------|
| 25 | 11 | Accelerator | | |
| 25 | 11 | Air entrainer | | |
| 25 | 11 | Superplasticizer | | |
| 25 | 8 | Water reducer | | |
| 28 | 11 | Water reducer | | |
| 25 | 15 | None | | |
This table helps illustrate the impacts of various admixtures and ingredient alterations on the concrete mix.
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