explain how soil stabilization affects highway construction.
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- How does soil stabilization affect highway constructionA section of a two-lane rural highway is to be realigned and replaced by a four-lane highway with a full-depth asphalt pavement. The AADT (both ways) on the existing section can be represented by 750 ESAL. It is expected that construction will be completed 5 years from now. If the traffic growth rate is 2 percent and the effective CBR of the subgrade on the new alignment is 9.0, determine a suitable depth of the asphalt pavement (in inches) using the AASHTO method. Take the design life of the pavement as 20 years. The resilient modulus of the asphalt (EAC) is 450,000 lb/in.2. Assume mi for the subgrade is 1 and the percent of traffic on the design lane is 45 percent. Use a reliability level of 90 percent, a standard deviation of 0.45, and a design serviceability loss of 2.0.Define the Correlation between N60 and Relative Densityof Granular Soil ?
- 5. The following narrative is correct ( ).A. When IL≤0, the clayey soil is in the hard stateB. When IL=0.25, the clayey soil is in the flow state C. IL≥1, the clay is in a plastic state D. IL=0.7, the clay is in soft plastic stateWorkers are to enter an excavation to repair a damaged pipeline on a construction site. The soil in the excavation appears to be a cohesive soil installed during the initial pipeline installation. Ground water is noted to be entering the bottom of the excavation. If the proposed excavation protective system is sloping, what is the maximum side slope of the excavation, per OSHA requirements?Explain how the results of a permeability test may be utilized in geotechnical engineering.