Table 1 below shows the sieve size and corresponding weight retained for 3 different stockpiles. Calculate the percent passing for all the 3 aggregate stockpiles. (20 points) Sieve size (mm) 19 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 pan Table 1. Weight retained of different stockpiles Stockpile 2 Stockpile 3 Avg. Wt. Retained Avg. Wt. Retained (gm) (gm) Stockpile 1 Avg. Wt. Retained (gm) 0 17 409 573 0 0 0 0 0 0 0 0 0 0 370 126 1 0 0 0 0 0 0 0 0 0 41 46 39 52 45 42 35 1. Explain the production process of asphalt binder. (10 points) 2. Explain the steps involved in the mix design of asphalt concrete based on the Superpave method. Also, show the flow chart of the mix design. (10 points) 3. Table 1 below shows the sieve size and corresponding weight retained for 3 different stockpiles. Calculate the percent passing for all the 3 aggregate stockpiles. (20 points)