Answered: Coarse aggregate is placed in a rigid…

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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Coarse aggregate is placed in a rigid bucket and compacted with a tamping rod to determine
its unit weight. The following data are obtained:
• Volume of bucket = 0.5 ft3
• Weight of empty bucket = 20.3 lb
• Weight of bucket filled with dry compacted coarse aggregate = 76.8 lb
a) Calculate the dry-compacted unit weight of the aggregate.
b) If the bulk dry specific gravity of the aggregate is 2.620, calculate the percent voids.

Expert Solution

Step 1

Given:

The volume of the bucket = $0.5 f t^{3}$ .
Weight of empty bucket = 20.3 lb.
Weight of bucket filled with dry compacted coarse aggregate = 76.8 lb.
The bulk dry specific gravity of the aggregate = 2.620g/cc

To Find:

The dry-compacted unit weight of the aggregate.
Calculate the percent voids.

Unit conversion:

$1 lb / {ft}^{3} = 0.0160185 g / cc$

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