Question
question 3 please
Draw the phase diagram of soil/aggregate. Based on this diagram, show the relationship between the void ratio and porosity. What are the two major guidelines/specifications available for soil and aggregate classification in highway design? List the major types of tests that need to be conducted for soil classification. Besides classification, what are different types of physical properties of soil/aggregate that need to be evaluated for highway design and construction? List and briefly describe (specification, qualitative diagram, and formula, if any) four major tests for soil/aggregate stiffness/strength characterization. What are the basic physical properties of asphalt binder? What are different grading systems of asphalt binder? List and explain briefly. Describe (in brief) the steps/tests to evaluate/determine the grade of asphalt binder based on Performance Grade (PG) system. What are different types of tests to characterize mechanical (stiffness, strength degradation, and indirect tensile strength) properties of asphalt mix/concrete? List & briefly discuss. Draw the phase diagram of asphalt mix. Based on this, define G_mb, G_mm, G_sc, VFA, V_a, VMA, and P_be.
Explanation / Answer
3) Physical properties of soil that are need to be evaluated are:
