Concrete Mixtures 9

Angular & Smooth Aggregate Properties


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Rough, angular and elongated aggregate particles require more water than smooth rounded aggregates to make the concrete workable. Angular aggregates require more cement than smooth aggregates to maintain the same cement to water ratio. Rough and angular aggregates form larger voids in the concrete mixture than smooth aggregates. More water and cement is used to fill the larger voids in rough and angular aggregates. Rough and angular aggregates form a stronger bond than smooth aggregates. Aggregates should be stored to reduce segregation. Aggregates stored in uniform thin layers segregate less than when they are stored on conical piles. Rough and angular, and small aggregates segregate less than smooth, and large aggregates.




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Concrete Mixtures Links

1.The Materials In Concrete.
2.Concrete Aggregates - Concrete Slump.
3.Concrete Placement - Vibration - Hydration.
4.Types of Portland Cement - Concrete Moisture & Cracking.
5.Watertight Concrete - Supplementary Cementing Materials.
6.Supplementary Cementing Materials.
7.Chemicals That Damage Concrete.
8.Concrete Aggregate Properties.
9.Angular & Smooth Aggregate Properties.
10.Admixtures.
11.Admixtures Continued.
12.Air Entraining Admixtures.
13.Air Entraining Admixtures Continued.
14.Conditions Affecting Concrete Air Volume.
15.Superplasticizers & Other Admixtures.
16.Ordering & Mixing Concrete.
17.Concrete Mixing - Subgrade Preparation.
18.Subbase Preparation - Concrete Placement.
19.Concrete Consolidation.
20.Concrete Finishing.
21.Concrete Curing.
22.Hot Weather Concreting.
23.Cold Weather Concreting.
24.Concrete Slump Test.

                                                     
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