Proctor 2

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School

Arizona State University *

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Course

310

Subject

Mechanical Engineering

Date

Dec 6, 2023

Type

pdf

Pages

2

Uploaded by MajorThunderOpossum27

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CON 310 Soil and Aggregate Compaction Homework Name: Assigned 03/16/2022 Due 03/22/2022 by 5:00 PM 1. Explain how the following values change depending on using modified or standard proctor: i. Maximum Dry Density – ii. Optimum Moisture Content – iii. Soil Strength – iv. Relative Compaction – 2. What is the definition of rock per ASTM Proctor? a. If there is more than 5% of “rock” by mass what is the recommendation per ASTM? b. How does it compare to ARIZ 227d ( https://apps.azdot.gov/files/materials- manuals/materials-testing/ariz-227d.pdf ) c. What impact does applying a correction factor have on the maximum dry density?
CON 310 Soil and Aggregate Compaction Homework 3. The earthwork subcontractor added a 16-inch loose lift of engineered fill to an 8-foot-deep sewer trench and began compacting the material. After 15 minutes of compacting the lift, the earthwork testing technician indicated the relative compaction is 92 percent. The earthwork contractor proceeded to make addition passes and the relative compaction did not increase. Before questioning the earthwork contractor, you review the project specifications and the project specifications require: Relative compaction greater than 95 percent Moisture content between Optimum Moisture ± 2 percent Maximum loose lift of 12 inches Provide four questions that you will ask to verify the project specification will be met: a. b. c. d.
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