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8. A contractor is planning to design asphalt mixture for a highway. There are four aggregate sources available for the mix and the sieve analysis for each aggregate source was completed as shown in Table below. Based on the individual sieve results: 1. Complete the gradation table below (i.e., the composite blend column) for the predetermined ratio of these aggregates to see if all sieves of target are met with the target? (5 points) Aggregate Source RAP Coarse Aggregate. Intermediate Aggregates Fines Blend/Composite Percent Used 15 23 25 37 =100 (Proportion) (%) Sieve Size Individual Gradation (% Passing) Combined (%) Target (%) (mm) 25 100 100 100 100 100 19 100 68 100 100 90-100 9.5 88 4 50 100 56-80 4.75 71 2 4 83 35-65 2.36 58 2 2 59 23-49 0.3 26 1 1 23 5-19 0.075 7 1 1.2 10.9 2-8 2. If the % of RAP is increased up 25%, then, which one of the other three aggregates will you decrease? and find its % accordingly (5 points) Aggregate Source RAP Coarse Aggregate. Intermediate Aggregates Fines Blend/Composite Percent 25 23 25 37 -100 Used (Proportion) (%) (fixed) Sieve Size Individual Gradation (% Passing) Combined (%) (mm) 25 100 100 19 68 100 9.5 4 50 4.75 2 4 2.36 2 2 0.3 1 1 0.075 1 1.2 100 100 88 71 58 26 7 100 100 100 83 59 23 10.9 Target (%) 100 90-100 56-80 35-65 23-49 5-19 2-8