Data Perhitungan Sieve Analysis.docx

DATA PERHITUNGAN MODUL SHIEVE ANALYSIS

1. Nilai Massa Tertahan (Rn) Rn =

Massa tertahan Massa total

× 100

a) Saringan No. 4 0 gr

Rn = 253,55 gr × 100 = 0 b) Saringan No. 10 20,94 gr

Rn = 253,55 gr × 100 = 8,25 c) Saringan No. 20 12,59 gr

Rn = 253,55 gr × 100 = 4,96 d) Saringan No. 40 31,44 gr

Rn = 253,55 gr × 100 = 12,39 e) Saringan No. 60 35,21 gr

Rn = 253,55 gr × 100 = 13,88 f) Saringan No. 100 82,68 gr

Rn = 253,55 gr × 100 = 32,60 g) Saringan No. 200 54,55 gr

Rn = 253,55 gr × 100 = 21,55

2. Kumulatif Massa Tertahan (ƩRn) ƩRn = Rn1 + Rn2+ .... + Rnn a) Rn1 = 0 b) Rn2 = 0 + 8,25 = 8,25 c) Rn3 = 0 + 8,25 + 4,96 = 13,21 d) Rn4 = 0 + 8,25 + 4,96 + 12,39 = 25,6 e) Rn5 = 0 + 8,25 + 4,96 + 12,39 + 13,88 = 39,48 f) Rn6 = 0 + 8,25 + 4,96 + 12,39 + 13,88 + 32,60 = 72,08

g) Rn7 = 0 + 8,25 + 4,96 + 12,39 + 13,88 + 32,60 + 21,55 = 93,63

3. Persen Lolos Persen Lolos = 100 – ƩRn a) Persen lolos 1 = 100 – 0 = 100% b) Persen lolos 2 = 100 – 8,25 = 91,75% c) Persen lolos 3 = 100 – 13,21 = 86,79% d) Persen lolos 4 = 100 – 25,6 = 74,4% e) Persen lolos 5 = 100 – 39,48 = 60,52% f) Persen lolos 6 = 100 – 72,08 = 27,92% g) Persen lolos 7 = 100 – 93,63 = 6,37%

4. Koefisien Keseragaman (Cu) D60

Cu = D10 0,243 mm

Cu = 0,0877 mm = 2,770 5. Koefisien Gradasi (Cc) 𝐷 2 30

Cc = D60 ×D10 0,1562 𝑚𝑚

Cc = 0,243 mm ×0,0877 mm = 1,141