A Standard Proctor compaction test was conducted on the soil, with the results shown below. The weight and volume of the mold used in the test were 4.6 lb and 1/30 ft³, respectively, and the mass of the can was 44 grams. Based on the results: a) Plot the Proctor curve for the borrow soil. b) Determine the optimum water content and maximum dry unit weight for the borrow soil. c) Determine the unit weight required for 95% of maximum, and what the range of moisture content for that unit weight i d) The sample with the lowest water content was tested for its densest void ratio, which was 0.05, and its loosest void ratio, which was 0.55. Determine its relative density. weight of wet soil and mold (lb) mass of can and wet soil (g) 9.15 125.72 8.99 8.98 8.65 9.19 119.30 111.76 108.63 128.34 mass of can and dry soil (g) 118.64 113.72 104.31 104.60 119.95

A Standard Proctor compaction test was conducted on the soil, with the results shown below. The weight and volume of the mold used in the test were 4.6 lb and 1/30 ft³, respectively, and the mass of the can was 44 grams. Based on the results: a) Plot the Proctor curve for the borrow soil. b) Determine the optimum water content and maximum dry unit weight for the borrow soil. c) Determine the unit weight required for 95% of maximum, and what the range of moisture content for that unit weight i d) The sample with the lowest water content was tested for its densest void ratio, which was 0.05, and its loosest void ratio, which was 0.55. Determine its relative density. weight of wet soil and mold (lb) mass of can and wet soil (g) 9.15 125.72 8.99 8.98 8.65 9.19 119.30 111.76 108.63 128.34 mass of can and dry soil (g) 118.64 113.72 104.31 104.60 119.95

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

A Standard Proctor compaction test was conducted on the soil, with the results shown below.
The weight and volume of the mold used in the test were 4.6 lb and 1/30 ft³, respectively, and the
mass of the can was 44 grams. Based on the results:
a) Plot the Proctor curve for the borrow soil.
b) Determine the optimum water content and maximum dry unit weight for the borrow soil.
c) Determine the unit weight required for 95% of maximum, and what the range of moisture
content for that unit weight is.
d)
The sample with the lowest water content was tested for its densest void ratio, which was
0.05, and its loosest void ratio, which was 0.55. Determine its relative density.
weight of wet soil and mold (lb) mass of can and wet soil (g)
9.15
125.72
119.30
111.76
108.63
128.34
8.99
8.98
8.65
9.19
mass of can and dry soil (g)
118.64
113.72
104.31
104.60
119.95
0

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