In the context of pavement material characterization, the CORRECT statement(s) is/are
- The load penetration curve of $\text{CBR}$ test may need origin correction due to the non-vertical penetrating plunger of the loading machine.
- The toughness and hardness of road aggregates are determined by Los Angeles abrasion test and aggregate impact test, respectively.
- Grading of normal (unmodified) bitumen binders is done based on viscosity test results.
- In compacted bituminous mix, Voids in the Mineral Aggregate $\text{(VMA)}$ is equal to the sum of total volume of air voids $\left(V_{v}\right)$ and total volume of bitumen $\left(V_{b}\right)$.