1. The results of a standard Proctor test are given in the following table. a. Determine the maximum dry unit weight of compaction and the optimum moisture content, given that the Proctor mold volume is 1/30 ft³. b. Determine the void ratio and the degree of saturation at the optimum moisture content given G₂= 2.68. Trial no. 1 2 3 4 1567 Weight of moist soil in the mold (lb) 3.92 4.12 4.29 4.37 4.45 4.35 4.20 Moisture content (%) 5.0 7.5 10.0 12.5 15 17.5 20.0

1. The results of a standard Proctor test are given in the following table. a. Determine the maximum dry unit weight of compaction and the optimum moisture content, given that the Proctor mold volume is 1/30 ft³. b. Determine the void ratio and the degree of saturation at the optimum moisture content given G₂= 2.68. Trial no. 1 2 3 4 1567 Weight of moist soil in the mold (lb) 3.92 4.12 4.29 4.37 4.45 4.35 4.20 Moisture content (%) 5.0 7.5 10.0 12.5 15 17.5 20.0

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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Concept explainers

Soil Compaction Test

Soil compaction is the major area of geotechnical engineering. Soil is composed of multiple pores present on its surface, while the soil is mainly composed of gravel, sand, rocks, etc. The arrangement of these rocks and gravels is such that they build up voids (spaces) between them, which allows spaces for the roots of the plants and crops to spread and absorb the required amount of nutrients. Soil compaction is a major problem primarily caused by human activities, micro-organisms, and other multiple factors.

Question

1. The results of a standard Proctor test are given in the following table.
a. Determine the maximum dry unit weight of compaction and the optimum moisture content,
given that the Proctor mold volume is 1/30 ft³.
b. Determine the void ratio and the degree of saturation at the optimum moisture content
given G₁= 2.68.
Trial no.
1234567
Weight of moist soil in the mold (lb)
3.92
4.12
4.29
4.37
4.45
4.35
4.20
Moisture content (%)
5.0
7.5
10.0
12.5.
15
17.5
20.0

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